1.Big particles and Wulff construction
|
|
|
- Anthony Evans
- 6 years ago
- Views:
Transcription
1 Metal nanoclusters and Catalysis Outline 1.Big particles and Wulff construction 2.Medium-size particles 3.Descriptor for catalysis 4.Ultrananocatalysis
2 Metal nanoclusters and Catalysis: Big particles Wulff theorem Wulff theorem = tool to predict the equilibrium shape of gas-phase metal clusters. It has been developed for macroscopic particles, but can be applied to metal nanoclusters Considering the (111) and (100) surfaces (for simplicity), one has: (100)/ (111) = d(100)/d(111) (100), (111) = surface energies of (100) and (111) facets d(100), d(111) = distances of facets from the centre of the cluster Gas-phase particles This criterion is quite intuitive: the higher the surface energy, the smaller the extension of the face.
3 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem Wulff-Kaishev theorem : for supported particles for the face in contact with the support, the surface energy has to be rescaled considering the adhesion to the substrate. As the adhesion usually stabilizes the particle, the face on contact with the surface is larger. This is shown in the following image. Supported particles
4 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: O on Ag particles Let s now consider a silver particle adsorbed on amorphous alumina. DFT-estimated surface energies of the (111), (100) and (110) facets : aspect-ratio Roughly estimating an adhesion of 0.2 ev per atom in contact with the oxide, the equilibrium shape of silver particle (about 6 nm in diameter) resulting from the Wulff-Kaishev theorem is the following. about 6 nm in diameter Catalysis Today (2011) side-view top-view
5 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants : O on Ag particles when oxygen atoms are adsorbed on the surface, the surface energies have to be rescaled according to the following data: (100) surface 1/2 coverage G=-0.30 ev (111) surface 1/4 coverage G= ev (110) surface 1/2 coverage G= ev We have measured the adsorption energy of oxygen over the Ag surfaces according to the following equation: E ads = 1/No [ E tot E(Ag) No/2 E(O 2 )] We have calculated the G of the reactions by estimating of the G mol (O 2 ) at atmospheric pressure and temperature (298 K) as: G mol (O 2 ) = ev
6 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: O on Ag particles The surface energies of the (111), (100) and (110) faces have to be rescaled according the following data Applying the Wulff-Kaishev theorem using the rescaled values of the surface energies, we get the following structure: about 6 nm in diameter aspect-ratio The aspect-ratio of the silver supported nanoparticles has changed side-view top-view
7 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: O on Ag particles The aspect ratio of the silver particles changes according to the oxygen pressure. Supported particle without oxygen Supported particle at p(o 2 )= 5 x 10-3 atm Supported particle at p(o 2 )= 1 atm This is in line with the experiment: it is observed that the aspect ratio increases in time during partial oxidation of propylene to propylene oxide and acrolein. Our interpretation is that during the reaction the surface is chemically reduced
8 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: C on Ni particles Let s now examine the case of carbon adsorption over a Ni nanoparticle. In absence of carbon adsorbed, the Wulff theorem predicts the following structure for a gas-phase nanoparticle of about 5 nm in diameter. According to DFT, only (111) and (100) facets are exposed in the gas phase
9 Metal nanoclusters and Catalysis: Big particles C atoms on the (113) surface ev ev ev ev ev ev ev ev
10 Metal nanoclusters and Catalysis: Big particles C atoms on the (113) surface ev ev ev ev the adsorption energy passes through a MAXIMUM = experimental observation of an incubation time
11 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: C on Ni particles If carbon is adsorbed on the surface, we can observe the growth of the (113) facets, as carbon strongly interacts with this type of surface NB! Assuming a given carbon chemical potential submitted (2012) (113) facets are exposed due to the lowering of the surface energy This is in agreement with experimental observations
12 Metal nanoclusters and Catalysis: Big particles Wulff-Kaishev theorem in presence of reactants: C on Ni particles No Carbon Transient 1st steady state Field Electron Emission Micrographs of Ni particles
13 Metal nanoclusters and Catalysis Outline 1.Big particles and Wulff construction 2.Medium-size particles 3.Descriptor for catalysis 4.Ultrananocatalysis
14 Metal nanoclusters and Catalysis: Medium-size bare particles Energy ordering of structural motifs upon adsorption Prototypical structural motifs for 38/40 atom pure particles
15 Metal nanoclusters and Catalysis: Medium-size bare particles Energy ordering of structural motifs upon adsorption Two structural motifs with full CO coverage TO 38 Dh 39 Eur. Phys. J. D 52, 131 (2009)
16 Metal nanoclusters and Catalysis: Medium-size bare particles Energy ordering of structural motifs upon adsorption: Pt case bare + 32 CO bare bare + 32 H
17 Metal nanoclusters and Catalysis: Medium-size bare particles Energy ordering of structural motifs upon adsorption: Pd case bare + 32 CO bare bare + 32 H
18 Metal nanoclusters and Catalysis: Medium-size bare particles Energy ordering of structural motifs upon adsorption: Au case bare + 32 CO bare bare + 32 H
19 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation patterns for nanoalloys Prototypical chemical ordering patterns for TO 38. Composition A 6 B 32. Core Hex Cent
20 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation patterns
21 Metal nanoclusters and Catalysis: Medium-size binary particles Adsorption patterns of a single CO molecule (or H atom) on (111) facets
22 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation changes upon CO adsorption Almost segregation inversion: 2 CO will be enough
23 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation changes upon H adsorption No segregation inversion with a few H atoms J. Phys. Chem. C 114, (2010)
24 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation changes upon adsorption: extended surfaces The Pt-CO bond is reinforced by the presence of superficial Cu atoms from: Andersson et al. J. Am. Chem. Soc. 131, 2404 (2009)
25 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation changes upon adsorption: nanoparticles are different
26 Metal nanoclusters and Catalysis: Medium-size binary particles Segregation inversion upon adsorption: nanoparticles from: Tao et al. Science 322, 932 (2008)
27 Metal nanoclusters and Catalysis Outline 1.Big particles and Wulff construction 2.Medium-size particles 3.Descriptor for catalysis 4.Ultrananocatalysis
28 Metal nanoclusters and Catalysis: Descriptors Bronsted-Evans-Polanyi relationships Energy-diagram for CO methanation descriptor from: Norskov et al. Nat Chem 2009 Transition state energy vs CO dissociation energy
29 Metal nanoclusters and Catalysis: Descriptors Bronsted-Evans-Polanyi relationships Rough justification: the whole PES curve as a function of the reaction coordinate moves simultaneously in the same direction from: Hammer et al. Top Cat 2006
30 Metal nanoclusters and Catalysis: Descriptors Sabatier principle (Volcano curve) from: Norskov et al. Nat Chem 2009 Catalytic activity vs descriptor For a given mechanism, you cannot go better than this change the mechanism!
31 Metal nanoclusters and Catalysis: Descriptors Other descriptor: d-band center (Norskov) Norskov et al. Nat Chem 2009 descriptor d F is the difference between the center of the d-band and the Fermi level
32 Metal nanoclusters and Catalysis: Descriptors d-band center in alloys (Norskov) Pt subsurf metal Pt from: Norskov et al. Nat Chem 2009
33 Metal nanoclusters and Catalysis Outline 1.Big particles and Wulff construction 2.Medium-size particles 3.Descriptor for catalysis 4.Ultrananocatalysis
Synthesis and Evaluation of Electrocatalysts for Fuel Cells
Synthesis and Evaluation of Electrocatalysts for Fuel Cells Jingguang Chen Center for Catalytic Science and Technology (CCST) Department of Chemical Engineering University of Delaware Newark, DE 19711
CHEM J-2 June 2014
CHEM1102 2014-J-2 June 2014 The diagram below shows the structure of an alloy of copper and gold with a gold atom at each of the corners and a copper atom in the centre of each of the faces. 2 What is
Thermodynamic studies of oxidation and reduction of ceria and ceria mixed oxides
Thermodynamic studies of oxidation and reduction of ceria and ceria mixed oxides R. J. Gorte Chemical & Biomolecular Engineering University of Pennsylvania Support: DOE-BES Collaborators: Paolo Fornasiero,
Supplementary Figure 1 In situ QCM measurements of Pd ALD on different oxide
Supplementary Figure 1 In situ QCM measurements of Pd ALD on different oxide surfaces using either HCHO or H 2 as reducing agent at 150 ºC. (a) On Al 2 O 3 ; (b) on ZrO 2 ; (c), on TiO 2. See Supplementary
PEFC cathode electrocatalysts: model system study
PEFC cathode electrocatalysts: model system study Debbie Myers, Xiaoping Wang, Nancy Kariuki, Suhas Niyogi, Jennifer Mawdsley, and Dave Carter Argonne National Laboratory W.A. Goddard, III, B. Merinov,
Supplementary Figures
1635 Reflectance / a.u. 3425 Supplementary Figures T-3 T-2 T-1 4000 3500 3000 2500 2000 1500 1000 Wavenumber / cm -1 Supplementary Figure 1 FTIR spectra of rutile TiO2 samples. Two bands at 1635 and 3425
Computer Simulation of Nanoparticle Aggregate Fracture
Mater. Res. Soc. Symp. Proc. Vol. 1056 2008 Materials Research Society 1056-HH08-45 Computer Simulation of Nanoparticle Aggregate Fracture Takumi Hawa 1,2, Brian Henz 3, and Michael Zachariah 1,2 1 National
Supporting Information
Supporting Information Confined space synthesis of fully alloyed AuPd nanoparticles encapsulated in porous silica Anupam Samanta, Thattarathody Rajesh and R. Nandini Devi* Catalysis and Inorganic Chemistry
Heterogeneous Catalysis: From Imagining to Imaging a Working Surface
Heterogeneous Catalysis: From Imagining to Imaging a Working Surface D. Wayne Goodman Texas A&M University Department of Chemistry Introduction to issues Studies of model catalysts with surface analytical
Examples of the use of XPS in Catalysis Research from the Vohs Group
Examples of the use of XPS in Catalysis Research from the Vohs Group Supported monolayer vanadia catalysts Ceria/zirconia automotive emissions control catalysts Reaction of oxygenates on Zn Pd/Zn methanol
Author's personal copy
STM and STS of Oxide Ultrathin Films MR Castell, University of Oxford, Oxford, United Kingdom 2018 Elsevier Inc. All rights reserved. Introduction 332 STM of Simple Oxide Films 332 STM of Oxide Films with
Interaction of carbon monoxide with Cu nanoclusters grown on alumina surface
IL NUOVO CIMENTO 38 C (2015) 68 DOI 10.1393/ncc/i2015-15068-3 Communications: SIF Congress 2014 Interaction of carbon monoxide with Cu nanoclusters grown on alumina surface Maria Peressi( ) Department
TALAT Lecture Phase Diagrams. 14 pages, 13 Figures. Basic Level
TALAT Lecture 1203 Phase Diagrams 14 pages, 13 Figures Basic Level prepared by M H Jacobs * Interdisciplinary Research Centre in Materials The University of Birmingham, UK (Based on approach adopted by
Ruthenium and Ruthenium-Dioxide Surface Chemistry. Herbert Over
Founded 1607 Ruthenium and Ruthenium-Dioxide Surface Chemistry IEUVI Optics TWG Meeting November 10, 2005 Herbert Over Physical Chemistry Department Justus Liebig Universität Gießen TransMIT Centrum for
Catalytic hydrogen production. J. K. Nørskov Center for Atomic-scale Materials Physics Technical University of Denmark
Catalytic hydrogen production J. K. Nørskov Center for Atomic-scale Materials Physics Technical University of Denmark norskov@fysik.dtu.dk Hydrogen production strategies Reforming of hydrocarbons Reforming
Au-Cu Catalyst for Low Temperature CO Oxidation
-Cu Catalyst for Low Temperature CO Oxidation J. Chris Bauer Todd J. Toops (co-principal Investigator) James E. Parks (co-principal Investigator) Oak Ridge National Laboratory Energy and Transportation
Insights from MD, MC and kmc
Insights from MD, MC and kmc Schematic potential energy surface representing the thermal diffusion an isolatedadsorbate between two stable lattice sites A and B. Adsorption energies Adsorption energies
Supplementary Figure 1 Heating E-chip. (A) The preparation of heating E-chip with
Supplementary Figures Supplementary Figure 1 Heating E-chip. (A) The preparation of heating E-chip with precursor, and the image of mounted Protochips Aduro heating stage (inset). The yellow circle in
Supplementary Figure 1. SEM and TEM characterization of S-0-MOF and S-0. (a, b) TEM and SEM images of S-0-MOF, (c, d) TEM and SEM images of the
Supplementary Figure 1. SEM and TEM characterization of S-0-MOF and S-0. (a, b) TEM and SEM images of S-0-MOF, (c, d) TEM and SEM images of the corresponding annealed sample S-0, (e,f) Statistical analysis
the image contrast at the atomic scale. The same method for STM image
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Supplementary Note 1. The interpretation of element-specific scanning tunneling microscopy (STM) images Oxygen vacancy lines
a) The self-diffusion coefficient of a metal with cubic structure can be expressed as
EXERCISES KJM5120 Chapter 5; Diffusion 1. Random (self) diffusion a) The self-diffusion coefficient of a metal with cubic structure can be expressed as 1 n D = s 6 t 2 where n/t represents the jump frequency
State-of-the-art Flame Synthesis of Nanoparticles
Verbrennung und chemisch reaktive Prozesse in der Energie- und Materialtechnik State-of-the-art Flame Synthesis of Nanoparticles Dr. Frank Ernst ernst@ptl.mavt.ethz.ch 200 nm Particle Technology Laboratory,
Fuel Cells in Energy Technology (6) Werner Schindler Department of Physics Nonequilibrium Chemical Physics TU München summer term 2013
Fuel Cells in Energy Technology (6) Werner Schindler Department of Physics Nonequilibrium Chemical Physics TU München summer term 2013 Energy losses in a hydrogen economy Energy Losses in a Hydrogen Economy
Oxidation Reactions. This oxide will from only if thermodynamics favour a reaction of the form: M + O 2 = MO 2. Which must form rapidly (favourable(
Oxidation of s Oxidation is a general term used to define the reaction between a metal or alloy and its environment. s or alloys are oxidised when heated to elevated temperatures es in air or highly oxidised
Solid Solutioning in CoCrFeNiMx (M= 4d transition metals) High-Entropy Alloys
Solid Solutioning in CoCrFeNiMx (M= 4d transition metals) High-Entropy Alloys Sheng Guo Department of Industrial and Materials Science Chalmers University of Technology, Gothenburg, Sweden 21 September
Supporting Information
Supporting Information Surface Composition and Crystallinity of Coalescing Silver-Gold Nanoparticles Eirini Goudeli and Sotiris E. Pratsinis* Particle Technology Laboratory, Institute of Process Engineering,
Chapter 10. Liquids and Solids
Chapter 10. Liquids and Solids Three States of Matter H 2 O Volume constant constant no Shape constant no no Why in three different states? 1 Intermolecular Force dipole-dipole attraction V dip-dip : 1.
Influence of discharge characteristics on methane decomposition in dielectric barrier discharge reactor
Influence of discharge characteristics on methane decomposition in dielectric barrier discharge reactor Sungkwon Jo 1), Dae Hoon Lee 2), Woo Seok Kang 3) and Young-Hoon Song 4) 1), 2), 3), 4) Plasma Laboratory,
Physics and Material Science of Semiconductor Nanostructures
Physics and Material Science of Semiconductor Nanostructures PHYS 570P Prof. Oana Malis Email: omalis@purdue.edu Lecture 6 Bulk semiconductor growth Single crystal techniques Nanostructure fabrication
SYNTHESIS OF NITROGEN-CONTAINING CARBON NANOFIBERS BY ETHYLENE/AMMONIA DECOMPOSITION. Introduction
SYNTHESIS OF NITROGEN-CONTAINING CARBON NANOFIBERS BY ETHYLENE/AMMONIA DECOMPOSITION Anastasia E. Shalagina, Olga Yu. Podyacheva, Zinfer R. Ismagilov Boreskov Institute of Catalysis, Pr. Ak. Lavrentieva,
SENSOR FOR COMBUSTIBLE GASES WITH SENSIBLE ELEMENT OXIDE SEMICONDUCTOR SnO 2 OBTAINED BY SOL GEL METHOD
SENSOR FOR COMBUSTIBLE GASES WITH SENSIBLE ELEMENT OXIDE SEMICONDUCTOR SnO 2 OBTAINED BY SOL GEL METHOD GABRIELA TELIPAN, 1 MIRCEA IGNAT 1, VIORICA PÂRVULESCU 2 1 ICPE-Advanced Research, 313 Splaiul Unirii
ph-dependent Growth of Atomic Pd Layers on Trisoctahedral Gold Nanoparticles to Realize Enhanced Performance in Electrocatalysis and
Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2018 ph-dependent Growth of Atomic Pd Layers on Trisoctahedral Gold Nanoparticles to Realize Enhanced
Homework #4 PROBLEM SOLUTIONS
Homework #4 PROBLEM SOLUTIONS 4.2 Determination of the number of vacancies per cubic meter in gold at 900 C (1173 K) requires the utilization of Equations (4.1) and (4.2) as follows: N V N exp Q V kt N
Interaction of carbon monoxide with Cu nanoclusters grown on alumina surface
Interaction of carbon monoxide with Cu nanoclusters grown on alumina surface J.A. Olmos-Asar, E. Vesselli, A. Baldereschi, Maria Peressi Department of Physics, University of Trieste and CNR-IOM 100 Congresso
Development of Pd Cu Membranes for Hydrogen Separation
Development of Pd Cu Membranes for Hydrogen Separation Shahrouz Nayebossadri, John Speight, David Book School of Metallurgy & Materials University of Birmingham www.hydrogen.bham.ac.uk The Hydrogen & Fuel
Nanoporous high-entropy alloys for highly stable and efficient
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2019 Supporting Information Nanoporous high-entropy alloys for highly stable
Au Mössbauer Spectroscopy in the study of gold catalysts
197 Au Mössbauer Spectroscopy in the study of gold catalysts Lorenzo Stievano Laboratoire de Réactivité de Surface UMR 7609 - CNRS Université Pierre et Marie Curie Paris 6 75005 Paris, France Catalysis
Alloys and Solid Solutions
Alloys and Solid Solutions Chemistry 123 Spring 2008 Dr. Woodward Solutions Solid Solution 14 Carat Gold Liquid Solution Vodka Gaseous Solution Air Solution = A homogeneous mixture 1 Alloys An alloy is
but T m (Sn0.62Pb0.38) = 183 C, so this is a common soldering alloy.
T m (Sn) = 232 C, T m (Pb) = 327 C but T m (Sn0.62Pb0.38) = 183 C, so this is a common soldering alloy. T m (Au) = 1064 C, T m (Si) = 2550 C but T m (Au0.97Si0.03) = 363 C, so thin layer of gold is used
Collopuim CNT 班 M2 竹下弘毅
Collopuim CNT 班 M2 竹下弘毅 Reference [1]Chin Li Cheung, Andrea Kurtz, Hongkun Park,*, and Charles M. Lieber*, J. Phys. Chem. B 2002, 106, 2429-2433 [2] Daisuke Takagi, Yoshikazu Homma, Hiroki Hibino,Satoru
mixed oxide layers on TiO 2 (110) using a
Preparation of ordered Mo+Ti and V+Ti mixed oxide layers on TiO 2 (110) using a W+Ti oxide diffusion blocking layer E. Primorac, O. Karslioglu, l M. Naschitzki, H. Kuhlenbeck, H.-J. Freund. D. Löffler,
Ordered Mesoporous Alumina-Supported Metal Oxides
American Chemical Society, J. Am. Chem. Soc., ja-2008-06429q, Supporting Information Page S1 Ordered Mesoporous Alumina-Supported Metal Oxides Stacy M. Morris, Pasquale F. Fulvio and Mietek Jaroniec Chemistry
SUPPORTING INFORMATION
SUPPORTING INFORMATION Copper Silver Thin Films with Metastable Miscibility for Oxygen Reduction Electrocatalysis in Alkaline Electrolytes Drew Higgins, 1,2 Melissa Wette, 3 Brenna M. Gibbons, 2,3 Samira
Hydrogenation of Benzene over Rhodium-Copper Alloy Crystallites Supported on Alumina
Hydrogenation of Benzene over Rhodium-Copper Alloy Crystallites Supported on Alumina 119 Hydrogenation of Benzene over Rhodium-Copper Alloy Crystallites Supported on Alumina Chun-Mei Lu* Ikai Wang# Shu-Ching
Simple fabrication of highly ordered AAO nanotubes
Journal of Optoelectronic and Biomedical Materials Volume 1, Issue 1, March 2009, p. 79-84 Simple fabrication of highly ordered AAO nanotubes N. Taşaltin a, S. Öztürk a, H. Yüzer b, Z. Z. Öztürk a,b* a
Department of Inorganic Chemistry www: fhi-berlin.mpg.de
1 Robert Schlögl 72µm NANOSTRUCTURE AND CATALYSIS: Cu AS CASE STUDY ( IS THIS AN ADVANCED MATERIAL?) 2 M Behrens A. Knop-Gericke D. Su A. Trunschke Di Wang I. Kassatkin M. Haevecker M. Muhler and team
Supporting Information
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2017 Supporting Information Investigation on mesoporous NiAl 2 O 4 /MO x (M=La, Ce, Ca, Mg) γ-al
MASTER'S THESIS. Synthesis of rare-earth oxide mesoporous structures by combustion synthesis
MASTER'S THESIS 2009:114 Synthesis of rare-earth oxide mesoporous structures by combustion synthesis Etienne Letournel Luleå University of Technology Master Thesis, Continuation Courses Chemical and Biochemical
Electroplating Engineers of Japan Develops Innovative Direct Patterning Plating Technology that Opens the Potential of New-Generation Electronics
PRESS RELEASE May 31, 2017 Tanaka Precious Metals Tanaka Holdings Co., Ltd. Electroplating Engineers of Japan Develops Innovative Direct Patterning Plating Technology that Opens the Potential of New-Generation
Section 4: Thermal Oxidation. Jaeger Chapter 3. EE143 - Ali Javey
Section 4: Thermal Oxidation Jaeger Chapter 3 Properties of O Thermal O is amorphous. Weight Density =.0 gm/cm 3 Molecular Density =.3E molecules/cm 3 O Crystalline O [Quartz] =.65 gm/cm 3 (1) Excellent
www-materials.eng.cam.ac.uk/typd
Part IB Paper 3: MATERIALS Examples Paper 3/1: TEACH YOURSELF PHASE DIAGRAMS This examples paper forms part of an interactive online resource Teach Yourself Phase Diagrams which is available at: www-materials.eng.cam.ac.uk/typd
Supporting Information
Electronic Supplementary Material (ESI) for Chemical Communications. This journal is The Royal Society of Chemistry 2017 Supporting Information A highly active Pt-Fe/γ-Al 2 catalyst for preferential oxidation
OXYGEN SENSOR BASED ON Ga 2 O 3 FILMS OPERATING AT HIGH TEMPERATURE
Journal of ptoelectronics and Advanced Materials Vol. 7, No. 2, Apil 2005, p. 891-896 Section 6: Functional materials. Applications XYGEN SENSR BASED N Ga 2 3 FILMS PERATING AT HIGH TEMPERATURE C. Baban
Supplementary Information. Atomically Dispersed Pd, Ni, and Pt Species in Ceria-Based Catalysts: Principal Differences in Stability and Reactivity
Supplementary Information Atomically Dispersed Pd, Ni, and Pt Species in Ceria-Based Catalysts: Principal Differences in Stability and Reactivity Armin Neitzel, a Alberto Figueroba, b Yaroslava Lykhach,
Phase diagrams. R.D.Makwana,IT,NU. R.D.Makwana,IT,NU
Phase diagrams Phase?? Phase is region throughout which all properties of material are essentially uniform Uniform region of a system which has uniform physical and chemical characteristics Phase diagram?
Energy-level matching of Fe(III) ions grafted at surface and. doped in bulk for efficient visible-light photocatalysts
Energy-level matching of (III) ions grafted at surface and doped in bulk for efficient visible-light photocatalysts Min Liu, Xiaoqing Qiu, Masahiro Miyauchi,*,, and Kazuhito Hashimoto*,, Department of
Keywords: Reformer model; Preferential oxidation; Water-gas shift reaction
A Reformer Performance Model for Fuel Cell Applications S.S. Sandhu +,a, Y.A. Saif a, J.P. Fellner b a Department of Chemical and Materials Engineering, University of Dayton 300 College Park, Dayton, OH
Oxidation behavior of Cu nanoclusters in hybrid thin films
Oxidation behavior of Cu nanoclusters in hybrid thin films Harm Wulff,* Steffen Drache*, Vitezslav Stranak**, Angela Kruth*** *EMAU Greifswald, **South Bohemian University, Budweis, *** INP Greifswald
Underpotential deposition and galvanic replacement for fuel cell catalysis
Underpotential deposition and galvanic replacement for fuel cell catalysis 1 Outline Background Fuel Cell Underpotential Deposition (UPD) (theory) Galvanic Replacement (theory) UPD (research) Fuel cell
A NOVEL METHOD FOR THE IMPROVEMENT IN THERMOELECTRIC PROPERTY OF TIN OXIDE THIN FILMS AND ITS APPLICATION IN GAS SENSING
INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, VOL. 1, NO. 2, JUNE 2008 A NOVEL METHOD FOR THE IMPROVEMENT IN THERMOELECTRIC PROPERTY OF TIN OXIDE THIN FILMS AND ITS APPLICATION IN GAS
CHAPTER 10 PHASE DIAGRAMS PROBLEM SOLUTIONS
CHAPTER 10 PHASE DIAGRAMS PROBLEM SOLUTIONS Solubility Limit 10.1 Consider the sugar water phase diagram of Figure 10.1. (a) How much sugar will dissolve in 1000 g of water at 80 C (176 F)? (b) If the
The Behaviour of Platinum Catalysts for Ammonia Oxidation
The Behaviour of Platinum Catalysts for Ammonia Oxidation STUDIES BY CONTROLLED ATMOSPHERE MICROSCOPY By R. T. K. Baker and R. B. Thomas Atomic Energy Research Establishment, Harwell and J. H. F. Notton
Supplementary Figure 1. The chemical structure of tannin acid (CAS: ) a typical form of tannins.
O O O O O O O O O O O O O O O O O O O Supplementary Figure 1. The chemical structure of tannin acid (CAS: 1401-55-4) a typical form of tannins. Supplementary Figure 2. FTIR spectra of tannin, and tannin-f127
Two Components System
Two Components System Three independent variables: T, P, compositions In general, constant pressure (fixed parameter). P+F=C+1 Simple Eutectic System The binary eutectic phase diagram explains the chemical
Direct Conversion Process from Syngas to Light Olefins A Process Design Study
CHEMICAL ENGINEERING TRANSACTIONS Volume 21, 2010 Editor J. J. Klemeš, H. L. Lam, P. S. Varbanov Copyright 2010, AIDIC Servizi S.r.l., ISBN 978-88-95608-05-1 ISSN 1974-9791 DOI: 10.3303/CET102100156 331
X-ray Photoelectron Spectroscopy
X-ray Photoelectron Spectroscopy X-ray photoelectron spectroscopy (XPS) is a non-destructive technique used to analyze the elemental compositions, chemical and electronic states of materials. XPS has a
Supplementary Figure 1 SEM images of the high-temperature annealed 2. (a, b) SEM images of the product prepared by annealing 2 at 1000
Supplementary Figure 1 SEM images of the high-temperature annealed PS@TiO 2. (a, b) SEM images of the product prepared by annealing PS@TiO 2 at 1000 ºC for 4 h in N 2 /H 2 (95:5) atmosphere with a heating
Hydrogen Production Via Aqueous Phase Reforming
Hydrogen Production Via Aqueous Phase Reforming David L. King Pacific Northwest National Laboratory Presented to the NIChE Catalysis Conference September 21, 2011 PNNL Collaborators: Yong Wang, Ayman Karim,
Point Defects in Metals
CHAPTER 5 IMPERFECTIONS IN SOLIDS PROBLEM SOLUTIONS Point Defects in Metals 5.1 Calculate the fraction of atom sites that are vacant for lead at its melting temperature of 327 C (600 K). Assume an energy
E45 Midterm 01 Fall 2007! By the 0.2% offset method (shown on plot), YS = 500 MPa
1.!Mechanical Properties (20 points) Refer to the following stress-strain plot derived from a standard uniaxial tensile test of a high performance titanium alloy to answer the following questions. Show
N-doped Graphite Carbon Derived from Carbon Foam for Efficient Hydrogen Evolution Reaction
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2018 Ruthenium @ N-doped Graphite Carbon Derived from Carbon Foam for Efficient Hydrogen Evolution Reaction
Interaction of oxygen with chromium deposited on Al 2 O 3 /NiAl(1 1 0)
Surface Science 532 535 (2003) 396 401 www.elsevier.com/locate/susc Interaction of oxygen with chromium deposited on Al 2 O 3 /NiAl(1 1 0) J. Sainio *, M. Eriksson, J. Lahtinen Laboratory of Physics, Helsinki
Using Impurities to Tailer Mesporous Metals: A KMC Study of Dealloying
Using Impurities to Tailer Mesporous Metals: A KMC Study of Dealloying Jonah Erlebacher Johns Hopkins University Department of Materials Science and Engineering Department of Chemical and Biomolecular
Amorphous Alumosilicophosphate Coatings for Niobium Alloys
Materials Science Forum Online: 2005-12-15 ISSN: 1662-9752, Vol. 502, pp 237-242 doi:10.4028/www.scientific.net/msf.502.237 2005 Trans Tech Publications, Switzerland Amorphous Alumosilicophosphate Coatings
SUPPORTING INFORMATION
Electronic Supplementary Material (ESI) for Catalysis Science & Technology. This journal is The Royal Society of Chemistry 2016 SUPPORTING INFORMATION Nearly atomic precise gold nanoclusters on nickel-based
Supplementary Materials for
advances.sciencemag.org/cgi/content/full/4/3/eaap7970/dc1 Supplementary Materials for In situ formation of molecular Ni-Fe active sites on heteroatom-doped graphene as a heterogeneous electrocatalyst toward
Applications of hydrogen permeable membranes in ammonia synthesis and decomposition
Applications of hydrogen permeable membranes in ammonia synthesis and decomposition September 19, 2016 Sean-Thomas B. Lundin, Thomas F. Fuerst, Jason C. Ganley, Colin A. Wolden, J. Douglas Way Chemical
CHAPTER 5 IMPERFECTIONS IN SOLIDS PROBLEM SOLUTIONS
CHAPTER 5 IMPERFECTIONS IN SOLIDS PROBLEM SOLUTIONS Vacancies and Self-Interstitials 5.1 Calculate the fraction of atom sites that are vacant for copper at its melting temperature of 1084 C (1357 K). Assume
FORMING OF FULLERENE-DISPERSED ALUMINUM COMPOSITE BY THE COMPRESSION SHEARING METHOD
FORMING OF FULLERENE-DISPERSED ALUMINUM COMPOSITE BY THE COMPRESSION SHEARING METHOD Noboru NAKAYAMA Akita Prefectural University, 84-4 Tsuchiya-Ebinokuti, Yurihonjyo, Akita/ 15-55, JAPAN nakayama@akita-pu.ac.jp
Characterization and Application to the Detection of Single-Stranded DNA Binding Protein of Fluorescent DNA-Templated Copper/Silver Nanoclusters
Electronic Supplementary Information for Characterization and Application to the Detection of Single-Stranded DNA Binding Protein of Fluorescent DNA-Templated Copper/Silver Nanoclusters Guo-Yu Lan, a Wei-Yu
The investigation of Ru based Fischer Tropsch catalyst for the production of synthetic liquid fuels derived from bio-syngas
Ruthenium based Fischer Tropsch catalyst Proceedings of European Congress of Chemical Engineering (ECCE-6) Copenhagen, 16-20 September 2007 The investigation of Ru based Fischer Tropsch catalyst for the
Chapter-5. Discussion
Chapter-5 Discussion 97 5. Discussion 5.1 Unpromoted model catalysts The reactivity measurements in connection with pre- and post-reaction characterization on the unpromoted Fe 2 O 3 catalyst showed that
SUPPLEMENTARY INFORMATION
High Electrochemical Activity of the Oxide Phase in Model Ceria- and Ceria-Ni Composite Anodes William C. Chueh 1,, Yong Hao, WooChul Jung, Sossina M. Haile Materials Science, California Institute of Technology,
PEAK EFFICIENCIES WITH FALLING MANUFACTURING COSTS
PEAK EFFICIENCIES WITH FALLING MANUFACTURING COSTS Simple and cost-effective introduction of PERC technology into the mass production of solar cells Kerstin Strauch, Florian Schwarz, Sebastian Gatz 1 Introduction
A Parametric Study on the Electrodeposition of Copper Nanocrystals on a Gold Film Electrode. Andrea Harmer Co-op term #1 April 25, 2003
A Parametric Study on the Electrodeposition of Copper Nanocrystals on a Gold Film Electrode Andrea Harmer Co-op term #1 April 25, 2003 Outline of Presentation: Introduction Purpose General method Parameters:
Novel Fuel Cell MEA Based on Pt-C Deposited by Magnetron Sputtering
10.1149/08008.0225ecst The Electrochemical Society Novel Fuel Cell MEA Based on Pt-C Deposited by Magnetron Sputtering A. Ostroverkh a, V. Johanek a, M. Dubau a, P. Kus a, K. Veltruska a, M. Vaclavu a,
Schottky Tunnel Contacts for Efficient Coupling of Photovoltaics and Catalysts
Schottky Tunnel Contacts for Efficient Coupling of Photovoltaics and Catalysts Christopher E. D. Chidsey Department of Chemistry Stanford University Collaborators: Paul C. McIntyre, Y.W. Chen, J.D. Prange,
SMARTCat Systematic, Material-oriented Approach using Rational design to develop break-through Catalysts for commercial automotive PEMFC stacks
SMARTCat Systematic, Material-oriented Approach using Rational design to develop break-through Catalysts for commercial automotive PEMFC stacks Pascal BRAULT CNRS smartcat.cnrs.fr pascal.brault@univ-orleans.fr
Durability Task Force Gasoline Engine Catalyst Deactivation/Ageing LAT. TelCo, 14 December 2017 LABORATORY OF APPLIED THERMODYNAMICS
1 LABORATORY OF APPLIED THERMODYNAMICS LAT Durability Task Force Gasoline Engine Catalyst Deactivation/Ageing ARISTOTLE UNIVERSITY THESSALONIKI SCHOOL OF ENGINEERING DEPT. OF MECHANICAL ENGINEERING TelCo,
Near-Surface Alloys for Improved Catalysis Manos Mavrikakis
Near-Surface Alloys for Improved Catalysis Manos Mavrikakis Department of Chemical and Biological Engineering University of Wisconsin Madison Madison, Wisconsin 53706 Acknowledgements Ratko Adzic (BNL)
Surfaces and Interfaces of Transparent Conducting Oxides Andreas Klein
Surfaces and Interfaces of Transparent Conducting Oxides Andreas Klein Technische Universität Darmstadt, Institute of Materials Science, Surface Science Division Transparent conducting oxides d R T high
Guowu Zhan and Hua Chun Zeng*
Guowu Zhan and Hua Chun Zeng* NUS Graduate School for Integrative Sciences and Engineering, and Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore,
Evaluating the effective diffusion coefficient within the automobile catalysts
Evaluating the effective diffusion coefficient within the automobile catalysts Hironobu Ozeki, Hiroshi Yamada, Tomohiko Tagawa and aoki Takahashi 2. Chemical Engineering, agoya University, agoya, Japan
Catalysts for the clean production of hydrogen. Chris Hardacre Queen s University, Belfast, UK
Catalysts for the clean production of hydrogen Chris Hardacre Queen s University, Belfast, UK c.hardacre@qub.ac.uk Acknowledgments Robbie Burch Alex Goguet Peijun Hu Richard Joyner John Breen Fred Meunier
Nanoparticle generation using sputtering plasmas
NCCAVS Joint Users Group Technical Symposium Nanomaterials for Energy, Biomedical, and Electronic Devices In Conjunction with the NCCAVS 35th Annual Equipment Exhibition Nanoparticle generation using sputtering
Combinatorial RF Magnetron Sputtering for Rapid Materials Discovery: Methodology and Applications
Combinatorial RF Magnetron Sputtering for Rapid Materials Discovery: Methodology and Applications Philip D. Rack,, Jason D. Fowlkes, and Yuepeng Deng Department of Materials Science and Engineering University
19. H, S, C, and G Diagrams Module
HSC 8 - HSC Diagrams November 5, 4 43-ORC-J (8 9. H, S, C, and G Diagrams Module The diagram module presents the basic thermochemical data for the given species in graphical format. Eight different diagram
solvent: component of a solution present in the greatest amount in alloy.
Phase Equilibrium Diagrams:- Phase equilibrium diagram is a graphic relationship between temperature and weight ratios of elements and alloys contribute to the built of the diagram. Phase diagrams provide
High-Temperature-Resistant Interconnections Formed by Using Nickel Micro-plating and Ni Nano-particles for Power Devices
Kato et al.: High-Temperature-Resistant Interconnections (1/6) [Technical Paper] High-Temperature-Resistant Interconnections Formed by Using Nickel Micro-plating and Ni Nano-particles for Power Devices
CHAPTER 5 IMPERFECTIONS IN SOLIDS PROBLEM SOLUTIONS ev /atom = exp. kt ( =
CHAPTER 5 IMPERFECTIONS IN SOLIDS PROBLEM SOLUTIONS Vacancies and Self-Interstitials 5.1 Calculate the fraction of atom sites that are vacant for copper at its melting temperature of 1084 C (1357 K). Assume