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Kumar A, Chatterjee A. Probabilistic microkinetic modeling: Species balance equations for a catalyst surface containing multiple short-range order parameters to capture spatial correlations. J Chem Phys 2024; 160:204107. [PMID: 38780385 DOI: 10.1063/5.0209343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Adsorbed molecules on a catalyst almost always arrange themselves in a manner that is far from perfectly random, which gives rise to spatial correlations. These correlations are a result of the interactions between the adsorbed species (adspecies) as well as elementary processes such as diffusion and reaction events that shape the adspecies arrangements. Despite their importance, spatial correlations are usually ignored while writing species balance equations for the modeling of heterogeneous catalytic systems. Recently, we have introduced a probabilistic microkinetic modeling (p-MKM) framework that aims at incorporating spatial correlations in the form of a short-ranged order (SRO) parameter into species balance equations. Here, we extend the approach to catalytic systems of higher complexity, namely, longer interactions and multiple species. This is made possible by including multiple pair probabilities in the p-MKM model for the first time. The interplay between different SRO parameters is probed. An important consideration is how many pair probabilities should be included to capture the underlying complexity with sufficient accuracy.
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Affiliation(s)
- Aditya Kumar
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Abhijit Chatterjee
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
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Xu W, Yang B. Microkinetic modeling with machine learning predicted binding energies of reaction intermediates of ethanol steam reforming: The limitations. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Liu Z, Tian W, Cui Z, Liu B. A universal microkinetic-machine learning bimetallic catalyst screening method for steam methane reforming. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Xu G, Cai C, Zhao W, Liu Y, Wang T. Rational design of catalysts with earth‐abundant elements. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2022. [DOI: 10.1002/wcms.1654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Gaomou Xu
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science Westlake University Hangzhou Zhejiang Province China
- Institute of Natural Sciences, Westlake Institute for Advanced Study Hangzhou Zhejiang Province China
| | - Cheng Cai
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science Westlake University Hangzhou Zhejiang Province China
- Institute of Natural Sciences, Westlake Institute for Advanced Study Hangzhou Zhejiang Province China
| | - Wanghui Zhao
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science Westlake University Hangzhou Zhejiang Province China
- Institute of Natural Sciences, Westlake Institute for Advanced Study Hangzhou Zhejiang Province China
| | - Yonghua Liu
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science Westlake University Hangzhou Zhejiang Province China
- Institute of Natural Sciences, Westlake Institute for Advanced Study Hangzhou Zhejiang Province China
| | - Tao Wang
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science Westlake University Hangzhou Zhejiang Province China
- Institute of Natural Sciences, Westlake Institute for Advanced Study Hangzhou Zhejiang Province China
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Wang SD, Chen JJ, Liu YZ, Ma TM, Li XN, He SG. Facile CO bond cleavage on polynuclear vanadium nitride clusters V 4N 5. Phys Chem Chem Phys 2022; 24:29765-29771. [PMID: 36458914 DOI: 10.1039/d2cp04304a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Identifying the structural configurations of precursors for CO dissociation is fundamentally interesting and industrially important in the fields of, e.g., Fischer-Tropsch synthesis. Herein, we demonstrated that CO could be dissociated on polynuclear vanadium nitride V4N5- clusters at room temperature, and a key intermediate, with CO in a N-assisted tilted bridge coordination where the C-O bond ruptures easily, was discovered. The reaction was characterized by mass spectrometry, photoelectron spectroscopy, and quantum-chemistry calculations, and the nature of the adsorbed CO on product V4N5CO- was further characterized by a collision-induced dissociation experiment. Theoretical analysis evidences that CO dissociation is predominantly governed by the low-coordinated V and N atoms on the (V3N4)VN- cluster and the V3N4 moiety resembles a support. This finding strongly suggests that a novel mode for facile CO dissociation was identified in a gas-phase cluster study.
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Affiliation(s)
- Si-Dun Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China. .,State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
| | - Jiao-Jiao Chen
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Beijing National Laboratory for Molecular Sciences and CAS Research/Education Center of Excellence in Molecular Sciences, Beijing 100190, P. R. China
| | - Yun-Zhu Liu
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences and CAS Research/Education Center of Excellence in Molecular Sciences, Beijing 100190, P. R. China
| | - Tong-Mei Ma
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China.
| | - Xiao-Na Li
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,Beijing National Laboratory for Molecular Sciences and CAS Research/Education Center of Excellence in Molecular Sciences, Beijing 100190, P. R. China
| | - Sheng-Gui He
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China.,Beijing National Laboratory for Molecular Sciences and CAS Research/Education Center of Excellence in Molecular Sciences, Beijing 100190, P. R. China
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Vasiliades MA, Govender NS, Govender A, Crous R, Moodley D, Botha T, Efstathiou AM. The Effect of H 2 Pressure on the Carbon Path of Methanation Reaction on Co/γ-Al 2O 3: Transient Isotopic and Operando Methodology Studies. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michalis A. Vasiliades
- Department of Chemistry, Heterogeneous Catalysis Laboratory, University of Cyprus, University Campus,
P.O. Box 20537, Nicosia, CY2109, Cyprus
| | - Nilenindran S. Govender
- Research and Technology, Energy Operations and Technology, Sasol South Africa, 1 Klasie Havenga Street, Sasolburg1947, South Africa
| | - Ashriti Govender
- Research and Technology, Energy Operations and Technology, Sasol South Africa, 1 Klasie Havenga Street, Sasolburg1947, South Africa
| | - Renier Crous
- Research and Technology, Energy Operations and Technology, Sasol South Africa, 1 Klasie Havenga Street, Sasolburg1947, South Africa
| | - Denzil Moodley
- Research and Technology, Energy Operations and Technology, Sasol South Africa, 1 Klasie Havenga Street, Sasolburg1947, South Africa
| | - Thys Botha
- Research and Technology, Energy Operations and Technology, Sasol South Africa, 1 Klasie Havenga Street, Sasolburg1947, South Africa
| | - Angelos M. Efstathiou
- Department of Chemistry, Heterogeneous Catalysis Laboratory, University of Cyprus, University Campus,
P.O. Box 20537, Nicosia, CY2109, Cyprus
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