1
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Küst U, Wang W, Wang C, Hagelin-Weaver H, Gustafson J, Shavorskiy A, Weaver JF, Knudsen J. Temperature-Dependent Selectivity and Detection of Hidden Carbon Deposition in Methane Oxidation. ACS Catal 2024; 14:5978-5986. [PMID: 38660614 PMCID: PMC11036384 DOI: 10.1021/acscatal.4c00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 04/26/2024]
Abstract
Reaction products in heterogeneous catalysis can be detected either on the catalyst surface or in the gas phase after desorption. However, if atoms are dissolved in the catalyst bulk, then reaction channels can become hidden. This is the case if the dissolution rate of the deposits is faster than their formation rate. This might lead to the underestimation or even overlooking of reaction channels such as, e.g., carbon deposition during hydrocarbon oxidation reactions, which is problematic as carbon can have a significant influence on the catalytic activity. Here, we demonstrate how such hidden deposition channels can be uncovered by carefully measuring the product formation rates in the local gas phase just above the catalyst surface with time-resolved ambient pressure X-ray photoelectron spectroscopy. As a case study, we investigate methane oxidation on a polycrystalline Pd catalyst in an oxygen-lean environment at a few millibar pressure. By ramping the temperature between 350 and 525 °C, we follow the time evolution of the different reaction pathways. Only in the oxygen mass-transfer limit do we observe CO production, while our data suggests that carbon deposition also happens outside this limit.
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Affiliation(s)
- Ulrike Küst
- Division
of Synchrotron Radiation Research, Lund
University, P.O. Box 118, SE-221 00 Lund, Sweden
- NanoLund, Lund University, P.O.
Box 118, SE-221 00 Lund, Sweden
| | - Weijia Wang
- MAX
IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Changda Wang
- National
Synchrotron Radiation Laboratory, University
of Science and Technology of China, Hefei 230029, China
| | - Helena Hagelin-Weaver
- Department
of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Johan Gustafson
- Division
of Synchrotron Radiation Research, Lund
University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Andrey Shavorskiy
- MAX
IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
| | - Jason F. Weaver
- Department
of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Jan Knudsen
- Division
of Synchrotron Radiation Research, Lund
University, P.O. Box 118, SE-221 00 Lund, Sweden
- NanoLund, Lund University, P.O.
Box 118, SE-221 00 Lund, Sweden
- MAX
IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
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2
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Degerman D, Goodwin CM, Lömker P, García-Martínez F, Shipilin M, Gloskovskii A, Nilsson A. Demonstrating Pressure Jumping as a Tool to Address the Pressure Gap in High Pressure Photoelectron Spectroscopy of CO and CO 2 Hydrogenation on Rh(211). Chemphyschem 2024; 25:e202300523. [PMID: 37877432 DOI: 10.1002/cphc.202300523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/26/2023]
Abstract
Operando probing by x-ray photoelectron spectroscopy (XPS) of certain hydrogenation reactions are often limited by the scattering of photoelectrons in the gas phase. This work describes a method designed to partially circumvent this so called pressure gap. By performing a rapid switch from a high pressure (where acquisition is impossible) to a lower pressure we can for a short while probe a "remnant" of the high pressure surface as well as the time dynamics during the re-equilibration to the new pressure. This methodology is demonstrated using the CO2 and the CO hydrogenation reaction over Rh(211). In the CO2 hydrogenation reaction, the remnant surface of a 2 bar pressure shows an adsorbate distribution which favors chemisorbed CHx adsorbates over chemisorbed CO. This contrasts against previous static operando spectra acquired at lower pressures. Furthermore, the pressure jumping method yields a faster acquisition and more detailed spectra than static operando measurements above 1 bar. In the CO hydrogenation reaction, we observe that CHx accumulated faster during the 275 mbar low pressure regime, and different hypotheses are presented regarding this observation.
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Affiliation(s)
- David Degerman
- Department of Physics, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 114 21, Stockholm, Sweden
| | - Christopher M Goodwin
- Department of Physics, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 114 21, Stockholm, Sweden
- Present Address: ALBA Synchrotron Light Facility, Carrer de la Llum 2, 26, 08290, Cerdanyola del Vallés, Spain
| | - Patrick Lömker
- Department of Physics, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 114 21, Stockholm, Sweden
| | | | - Mikhail Shipilin
- Department of Physics, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 114 21, Stockholm, Sweden
| | - Andrei Gloskovskii
- Deutsches Elektronen Synchrotron DESY, Notkestraße 85, 226 07, Hamburg, Germany
| | - Anders Nilsson
- Department of Physics, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 114 21, Stockholm, Sweden
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3
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Roger M, Artiglia L, Boucly A, Buttignol F, Agote-Arán M, van Bokhoven JA, Kröcher O, Ferri D. Improving time-resolution and sensitivity of in situ X-ray photoelectron spectroscopy of a powder catalyst by modulated excitation. Chem Sci 2023; 14:7482-7491. [PMID: 37449079 PMCID: PMC10337771 DOI: 10.1039/d3sc01274c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/29/2023] [Indexed: 07/18/2023] Open
Abstract
Ambient pressure X-ray photoelectron spectroscopy (APXPS) is a powerful tool to characterize the surface structure of heterogeneous catalysts in situ. In order to improve the time resolution and the signal-to-noise (S/N) ratio of photoemission spectra, we collected consecutive APXP spectra during the periodic perturbation of a powder Pd/Al2O3 catalyst away from its equilibrium state according to the modulated excitation approach (ME). Averaging of the spectra along the alternate pulses of O2 and CO improved the S/N ratio demonstrating that the time resolution of the measurement can be limited solely to the acquisition time of one spectrum. Through phase sensitive analysis of the averaged time-resolved spectra, the formation/consumption dynamics of three oxidic species, two metal species, adsorbed CO on Pd0 as well as Pdn+ (n > 2) was followed along the gas switches. Pdn+ and 2-fold surface PdO species were recognised as most reactive to the gas switches. Our approach demonstrates that phase sensitive detection of time-resolved XPS data allows following the dynamics of reactive species at the solid-gas interface under different reaction environments with unprecedented precision.
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Affiliation(s)
- M Roger
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), Institute for Chemical Sciences and Engineering CH-1015 Lausanne Switzerland
| | - L Artiglia
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
| | - A Boucly
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
| | - F Buttignol
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), Institute for Chemical Sciences and Engineering CH-1015 Lausanne Switzerland
| | - M Agote-Arán
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
| | - J A van Bokhoven
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich 8093 Zurich Switzerland
| | - O Kröcher
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), Institute for Chemical Sciences and Engineering CH-1015 Lausanne Switzerland
| | - D Ferri
- Paul Scherrer Institut Forschungsstrasse 111, CH-5232 Villigen PSI Switzerland
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4
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Robert A, Cerenius Y, Tavares PF, Hultin Stigenberg A, Karis O, Lloyd Whelan AC, Runéus C, Thunnissen M. MAX IV Laboratory. EUROPEAN PHYSICAL JOURNAL PLUS 2023; 138:495. [PMID: 37304246 PMCID: PMC10240111 DOI: 10.1140/epjp/s13360-023-04018-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/24/2023] [Indexed: 06/13/2023]
Abstract
MAX IV Laboratory is a Swedish national synchrotron radiation facility that comprises three accelerators with varying characteristics. One of the accelerators, the 3 GeV storage ring, is the world's first fourth-generation ring and pioneered the use of the multibend achromat lattice to provide access to ultrahigh brightness X-rays. MAX IV aims to stay at the forefront of the current and future research needs of its multidisciplinary user community, principally located in the Nordic and Baltic regions. Our 16 beamlines currently offer and continue to develop modern X-ray spectroscopy, scattering, diffraction, and imaging techniques to address scientific problems of importance to society.
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Affiliation(s)
- Aymeric Robert
- MAX IV Laboratory, Lund University, BOX 118, 211 00 Lund, Sweden
| | - Yngve Cerenius
- MAX IV Laboratory, Lund University, BOX 118, 211 00 Lund, Sweden
| | | | | | - Olof Karis
- MAX IV Laboratory, Lund University, BOX 118, 211 00 Lund, Sweden
| | | | - Caroline Runéus
- MAX IV Laboratory, Lund University, BOX 118, 211 00 Lund, Sweden
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5
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Wang Z, Lin Z, Wang Y, Shen S, Zhang Q, Wang J, Zhong W. Nontrivial Topological Surface States in Ru 3 Sn 7 toward Wide pH-Range Hydrogen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2302007. [PMID: 36994807 DOI: 10.1002/adma.202302007] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Nontrivial topological surface states (TSSs), which possess extraordinary carrier mobility and are protected by the bulk symmetry, have emerged as an innovative platform to search for efficient electrocatalysts toward hydrogen evolution reaction (HER). Here, a Sn-based nontrivial metal Ru3 Sn7 is prepared using electrical arc melting method. The results indicate that the (001) crystal family of Ru3 Sn7 possesses nontrivial TSSs with linear dispersion relation and large nontrivial energy window. Experimental and theoretical results demonstrate that nontrivial TSSs of Ru3 Sn7 can significantly boost charge transfer kinetics and optimize adsorption of hydrogen intermediates due to bulk symmetry-protected band structures. As expected, nontrivial Ru3 Sn7 exhibits superior HER activity to Ru, Pt/C, and trivial counterparts (e.g., Ru2 Sn3 , IrSn2 , and Rh3 Sn2 ) with higher ratios of noble metals. Furthermore, the wide pH-range activity of topologically nontrivial Ru3 Sn7 implies the robustness of its TSSs against pH variation during the HER. These findings provide a promising approach to the rational design of topologically nontrivial metals as highly efficient electrocatalysts.
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Affiliation(s)
- Zongpeng Wang
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
- School of Material Science and Engineering, Central South University, No. 932, Lushan South Road, Changsha, 410083, China
| | - Zhiping Lin
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
| | - Yinglan Wang
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
| | - Shijie Shen
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
| | - Qinghua Zhang
- Institution of Physics, Chinese Academic of Science, No.8, 3rd Zhongguancun South Street, Beijing, 100190, China
| | - Jiacheng Wang
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
| | - Wenwu Zhong
- School of Material Science and Engineering, Taizhou University, No. 1139, Shifu Road, Jiaojiang, 318000, China
- School of Material Science and Hydrogen Energy, Foshan Institute of Technology, No. 18, Jiangwanyi Road, Foshan, 528000, China
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6
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D’Acunto G, Tsyshevsky R, Shayesteh P, Gallet JJ, Bournel F, Rochet F, Pinsard I, Timm R, Head AR, Kuklja M, Schnadt J. Bimolecular Reaction Mechanism in the Amido Complex-Based Atomic Layer Deposition of HfO 2. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:529-538. [PMID: 36711051 PMCID: PMC9879184 DOI: 10.1021/acs.chemmater.2c02947] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/18/2022] [Indexed: 06/16/2023]
Abstract
The surface chemistry of the initial growth during the first or first few precursor cycles in atomic layer deposition is decisive for how the growth proceeds later on and thus for the quality of the thin films grown. Yet, although general schemes of the surface chemistry of atomic layer deposition have been developed for many processes and precursors, in many cases, knowledge of this surface chemistry remains far from complete. For the particular case of HfO2 atomic layer deposition on a SiO2 surface from an alkylamido-hafnium precursor and water, we address this lack by carrying out an operando atomic layer deposition experiment during the first cycle of atomic layer deposition. Ambient-pressure X-ray photoelectron spectroscopy and density functional theory together show that the decomposition of the metal precursor on the stoichiometric SiO2 surface in the first half-cycle of atomic layer deposition proceeds via a bimolecular reaction mechanism. The reaction leads to the formation of Hf-bonded methyl methylene imine and free dimethylamine. In addition, ligand exchange takes place involving the surface hydroxyls adsorbed at defect sites of the SiO2 surface.
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Affiliation(s)
- Giulio D’Acunto
- Department
of Physics, Division of Synchrotron Radiation Research, and NanoLund, Lund University, Box 118, 221 00 Lund, Sweden
| | - Roman Tsyshevsky
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742, United States
| | - Payam Shayesteh
- Department
of Physics, Division of Synchrotron Radiation Research, and NanoLund, Lund University, Box 118, 221 00 Lund, Sweden
| | - Jean-Jacques Gallet
- CNRS
Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Université, 4 place Jussieu, 75005 Paris, France
- Synchrotron
SOLEIL, L’Orme des Merisiers,
Saint-Aubin, BP 48, 91192 Gif-sur-Yvette
Cedex, France
| | - Fabrice Bournel
- CNRS
Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Université, 4 place Jussieu, 75005 Paris, France
- Synchrotron
SOLEIL, L’Orme des Merisiers,
Saint-Aubin, BP 48, 91192 Gif-sur-Yvette
Cedex, France
| | - François Rochet
- CNRS
Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Université, 4 place Jussieu, 75005 Paris, France
| | - Indiana Pinsard
- Department
of Physics, Division of Synchrotron Radiation Research, and NanoLund, Lund University, Box 118, 221 00 Lund, Sweden
| | - Rainer Timm
- Department
of Physics, Division of Synchrotron Radiation Research, and NanoLund, Lund University, Box 118, 221 00 Lund, Sweden
| | - Ashley R. Head
- Center
for Functional Nanomaterials, Brookhaven
National Laboratory, P.O. Box 5000, Upton, New
York 11973-5000, United
States
| | - Maija Kuklja
- Department
of Materials Science and Engineering, University
of Maryland, College Park, Maryland 20742, United States
| | - Joachim Schnadt
- Department
of Physics, Division of Synchrotron Radiation Research, and NanoLund, Lund University, Box 118, 221 00 Lund, Sweden
- MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
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7
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Leidinger P, Panighel M, Pérez Dieste V, Villar-Garcia IJ, Vezzoni P, Haag F, Barth JV, Allegretti F, Günther S, Patera LL. Probing dynamic covalent chemistry in a 2D boroxine framework by in situ near-ambient pressure X-ray photoelectron spectroscopy. NANOSCALE 2023; 15:1068-1075. [PMID: 36541666 PMCID: PMC9851174 DOI: 10.1039/d2nr04949j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/30/2022] [Indexed: 06/08/2023]
Abstract
Dynamic covalent chemistry is a powerful approach to design covalent organic frameworks, where high crystallinity is achieved through reversible bond formation. Here, we exploit near-ambient pressure X-ray photoelectron spectroscopy to elucidate the reversible formation of a two-dimensional boroxine framework. By in situ mapping the pressure-temperature parameter space, we identify the regions where the rates of the condensation and hydrolysis reactions become dominant, being the key to enable the thermodynamically controlled growth of crystalline frameworks.
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Affiliation(s)
- Paul Leidinger
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, 85748 Garching, Germany
| | | | | | | | - Pablo Vezzoni
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Felix Haag
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | - Johannes V Barth
- Physics Department E20, Technical University of Munich, 85748 Garching, Germany
| | | | - Sebastian Günther
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, 85748 Garching, Germany
| | - Laerte L Patera
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, 85748 Garching, Germany
- Institute of Physical Chemistry, University of Innsbruck, 6020 Innsbruck, Austria.
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8
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Svenum IH, Strømsheim MD, Knudsen J, Venvik HJ. Activity and segregation behavior of Pd75%Ag25%(111) during CO oxidation– an in situ NAP-XPS investigation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Lian X, Gao J, Ding Y, Liu Y, Chen W. Unraveling Catalytic Reaction Mechanism by In Situ Near Ambient Pressure X-ray Photoelectron Spectroscopy. J Phys Chem Lett 2022; 13:8264-8277. [PMID: 36036437 DOI: 10.1021/acs.jpclett.2c01191] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Probing surface chemistry during reactions closer to realistic conditions is crucial for the understanding of mechanisms in heterogeneous catalysis. Near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) is one of the state-of-the-art surface-sensitive techniques used to characterize catalyst surfaces in gas phases. This Perspective begins with a brief overview of the development of the NAP-XPS technique and its representative applications in identifying the active sites at a molecular level. Next, recent in situ NAP-XPS investigations of several model catalysts in the CO2 hydrogenation reaction are mainly discussed. Finally, we highlight the major challenges facing NAP-XPS and future improvements to facilities for probing intermediates with higher resolutions under real ambient pressure reactions in heterogeneous catalysis.
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Affiliation(s)
- Xu Lian
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Jiajia Gao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yishui Ding
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, PR China
| | - Yuan Liu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, PR China
| | - Wei Chen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, PR China
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
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10
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Takahashi K, Takahashi L, Le SD, Kinoshita T, Nishimura S, Ohyama J. Synthesis of Heterogeneous Catalysts in Catalyst Informatics to Bridge Experiment and High-Throughput Calculation. J Am Chem Soc 2022; 144:15735-15744. [PMID: 35984913 DOI: 10.1021/jacs.2c06143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The coupling of high-throughput calculations with catalyst informatics is proposed as an alternative way to design heterogeneous catalysts. High-throughput first-principles calculations for the oxidative coupling of methane (OCM) reaction are designed and performed where 1972 catalyst surface planes for the CH4 to CH3 reaction are calculated. Several catalysts for the OCM reaction are designed based on key elements that are unveiled via data visualization and network analysis. Among the designed catalysts, several active catalysts such as CoAg/TiO2, Mg/BaO, and Ti/BaO are found to result in high C2 yield. Results illustrate that designing catalysts using high-throughput calculations is achievable in principle if appropriate trends and patterns within the data generated via high-throughput calculations are identified. Thus, high-throughput calculations in combination with catalyst informatics offer a potential alternative method for catalyst design.
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Affiliation(s)
- Keisuke Takahashi
- Department of Chemistry, Hokkaido University, North 10, West 8, Sapporo 060-8510, Japan
| | - Lauren Takahashi
- Department of Chemistry, Hokkaido University, North 10, West 8, Sapporo 060-8510, Japan
| | - Son Dinh Le
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Japan
| | - Takaaki Kinoshita
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Shun Nishimura
- Graduate School of Advanced Science and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Japan
| | - Junya Ohyama
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
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11
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Boix V, Scardamaglia M, Gallo T, D’Acunto G, Strømsheim MD, Cavalca F, Zhu S, Shavorskiy A, Schnadt J, Knudsen J. Following the Kinetics of Undercover Catalysis with APXPS and the Role of Hydrogen as an Intercalation Promoter. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Virginia Boix
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, 22362 Lund, Sweden
- NanoLund, Lund University, 22362 Lund, Sweden
| | | | - Tamires Gallo
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, 22362 Lund, Sweden
| | - Giulio D’Acunto
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, 22362 Lund, Sweden
- NanoLund, Lund University, 22362 Lund, Sweden
| | - Marie Døvre Strømsheim
- Department of Chemical Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | | | - Suyun Zhu
- MAX IV Laboratory, Lund University, 22484 Lund, Sweden
| | | | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, 22362 Lund, Sweden
- MAX IV Laboratory, Lund University, 22484 Lund, Sweden
- NanoLund, Lund University, 22362 Lund, Sweden
| | - Jan Knudsen
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, 22362 Lund, Sweden
- MAX IV Laboratory, Lund University, 22484 Lund, Sweden
- NanoLund, Lund University, 22362 Lund, Sweden
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12
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Chien TE, Hohmann L, Harding DJ. Near-ambient pressure velocity map imaging. J Chem Phys 2022; 157:034201. [DOI: 10.1063/5.0098495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We present a new velocity map imaging instrument for studying molecular beam surface scattering in a near-ambient pressure (NAP-VMI) environment. The instrument offers the possibility to study chemical reaction dynamics and kinetics where higher pressures are either desired or unavoidable, adding a new tool to help close the “pressure gap” between surface science and applied catalysis. NAP-VMI conditions are created by two sets of ion optics that guide ions through an aperture and map their velocities. The aperture separates the high pressure ionization region and maintains the necessary vacuum in the detector region. The performance of the NAP-VMI is demonstrated with results from N2O photodissociation and N2 scattering from a Pd(110) surface, which are compared under vacuum and at near-ambient pressure (1 × 10−3 mbar). NAP-VMI has the potential to be applied to, and useful for, a broader range of experiments, including photoelectron spectroscopy and scattering with liquid microjets.
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Affiliation(s)
- Tzu-En Chien
- Department of Chemical Engineering, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Lea Hohmann
- Department of Chemical Engineering, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Dan J. Harding
- Department of Chemical Engineering, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
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13
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Pfaff S, Rämisch L, Gericke SM, Larsson A, Lundgren E, Zetterberg J. Visualizing the Gas Diffusion Induced Ignition of a Catalytic Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sebastian Pfaff
- Lund University, Combustion Physics, Sölvegatan 14, S-22363 Lund, Sweden
| | - Lisa Rämisch
- Lund University, Combustion Physics, Sölvegatan 14, S-22363 Lund, Sweden
| | - Sabrina M. Gericke
- Lund University, Combustion Physics, Sölvegatan 14, S-22363 Lund, Sweden
| | - Alfred Larsson
- Lund University, Division of Synchrotron Radiation Research, Sölvegatan 14, S-22363 Lund, Sweden
| | - Edvin Lundgren
- Lund University, Division of Synchrotron Radiation Research, Sölvegatan 14, S-22363 Lund, Sweden
| | - Johan Zetterberg
- Lund University, Combustion Physics, Sölvegatan 14, S-22363 Lund, Sweden
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14
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Poths P, Alexandrova AN. Theoretical Perspective on Operando Spectroscopy of Fluxional Nanocatalysts. J Phys Chem Lett 2022; 13:4321-4334. [PMID: 35536346 DOI: 10.1021/acs.jpclett.2c00628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Improvements in operando spectroscopy have enabled the catalysis community to investigate the dynamic nature of catalysts under operating conditions with increasing detail. Still, the highly dynamic nature of some catalysts, such as fluxional supported subnano clusters, presents a formidable challenge even for the most state-of-the-art techniques. The reason is that such fluxional catalytic interfaces contain a variety of thermally accessible states. Operando spectroscopies used in catalysis generally fall into two categories: ensemble-based techniques, which provide spectra containing the signals of the entire ensemble of states of the catalyst and are not necessarily dominated by the most active species, and localized techniques, which provide atomistic-level information about the dynamics of active sites in a very small area, which might not include the most active species. Combining many different kinds of techniques can provide detailed insight; however, we propose that effective utilization of specific computational techniques and approaches within the fluxionality paradigm can fill the gap and enable atomistic characterization of the most relevant catalytic sites.
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Affiliation(s)
- Patricia Poths
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
| | - Anastassia N Alexandrova
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095-1569, United States
- California NanoSystems Institute, Los Angeles, California 90095, United States
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15
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Redekop EA, Yablonsky GS, Gleaves JT. Truth is, we all are transients: A perspective on the time-dependent nature of reactions and those who study them. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Mohamed‐Ibrahim NAB, Kheng Boong S, Zhong Ang Z, Shiuan Ng L, Tan JYC, Chong C, Kwee Lee H. Applying Magnetic‐Responsive Nanocatalyst‐Liquid Interface for Active Molecule Manipulation to Boost Catalysis Beyond Diffusion Limit. ChemCatChem 2022. [DOI: 10.1002/cctc.202200036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nur Amalina binte Mohamed‐Ibrahim
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Siew Kheng Boong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Zhi Zhong Ang
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Li Shiuan Ng
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Jia Ying Charlene Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Carice Chong
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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17
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Pérez-Dieste V. Characterization of model and real catalysts by APXPS. EPJ WEB OF CONFERENCES 2022. [DOI: 10.1051/epjconf/202227301005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
In this contribution, I first briefly summarize some of the recent advances relevant for the investigation of heterogeneous catalysis with Ambient Pressure X-ray Photoelectron Spectroscopy (APXPS). In the second part, two examples of the research done at the CIRCE beamline of the synchrotron ALBA are described: CO oxidation on a model curved crystal Pd(111) catalyst and methanol steam reforming on powder bimetallic supported catalysts, PdCu/ monoclinic and cubic zirconia.
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18
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Redokop E, Poelman H, Filez M, Ramachandran RK, Dendooven J, Detavernier C, Marin GB, Olsbye U, Galvita V. Aligning time-resolved kinetics (TAP) and surface spectroscopy (AP-XPS) for a more comprehensive understanding of ALD-derived 2D and 3D model catalysts. Faraday Discuss 2022; 236:485-509. [DOI: 10.1039/d1fd00120e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spectro-kinetic characterization of complex catalytic materials, i.e. relating the observed reaction kinetics to spectroscopic descriptors of the catalyst state, presents a fundamental challenge with a potentially significant impact on various...
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19
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Flavell W. Spiers Memorial Lecture: Prospects for photoelectron spectroscopy. Faraday Discuss 2022; 236:9-57. [DOI: 10.1039/d2fd00071g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An overview is presented of recent advances in photoelectron spectroscopy, focussing on advances in in situ and time-resolved measurements, and in extending the sampling depth of the technique. The future...
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Shavorskiy A, D’Acunto G, Boix de la Cruz V, Scardamaglia M, Zhu S, Temperton RH, Schnadt J, Knudsen J. Gas Pulse-X-Ray Probe Ambient Pressure Photoelectron Spectroscopy with Submillisecond Time Resolution. ACS APPLIED MATERIALS & INTERFACES 2021; 13:47629-47641. [PMID: 34590812 PMCID: PMC8517956 DOI: 10.1021/acsami.1c13590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
A setup capable of conducting gas pulse-X-ray probe ambient pressure photoelectron spectroscopy with high time resolution is presented. The setup makes use of a fast valve that creates gas pulses with an internal pressure in the mbar range and a rising edge of few hundreds of microseconds. A gated detector based on a fast camera is synchronized with the valve operation to measure X-ray photoemission spectra with up to 20 μs time resolution. The setup is characterized in several experiments in which the N2 gas is pulsed either into vacuum or a constant flow of another gas. The observed width of the pulse rising edge is 80 μs, and the maximum internal pulse pressure is ∼1 mbar. The CO oxidation reaction over Pt (111) was used to demonstrate the capability of the setup to correlate the gas phase composition with that of the surface during transient supply of CO gas into an O2 stream. Thus, formation of both chemisorbed and oxide oxygen species was observed prior to CO gas perturbation. Also, the data indicated that both the Langmuir-Hinshelwood and Mars-van-Krevelen mechanisms play an important role in the oxidation of carbon monoxide under ambient conditions.
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Affiliation(s)
| | - Giulio D’Acunto
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
| | | | | | - Suyun Zhu
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
| | | | - Joachim Schnadt
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
| | - Jan Knudsen
- MAX
IV Laboratory, Lund University, Lund 221 00, Sweden
- Division
of Synchrotron Radiation, Department of Physics, Lund University, Lund 221 00, Sweden
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