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Title: Lattice Strained Ni-Co alloy as a High-Performance Catalyst for Catalytic Dry Reforming of Methane

Abstract

Dry reforming of methane (DRM) is an effective route to convert methane and carbon dioxide to syngas. IN this work, we report an efficient nickel cobalt bimetallic catalyst with an activity of 4.97 mol CH4 mol Ni -1s -1 at 800 °C. It is active at low temperature as well, and near thermodynamic equilibrium conversion was achieved as low as 350 °C, with a high yield of H 2 implying inhibition of side reactions: i.e., a reverse water-gas shift (RWGS) reaction. The formation of Ni-Co alloy during the reaction was observed, and its lattice contraction was revealed by HAADF-STEM and EXAFS experiments. The lattice-strained Ni-Co alloy has good CO 2 dissociation ability, which is responsible for its superior catalytic performance. Its weak chemisorption with H 2 results in inhibition of RWGS side reactions. This research is helpful in the design and development of other metal alloy materials with novel structures and/or electronic configurations for catalytic applications.

Authors:
 [1];  [2];  [3];  [3];  [4];  [5];  [5]; ORCiD logo [6];  [3]; ORCiD logo [4]
  1. Peking Univ., Beijing (China); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Chinese Academy of Sciences (CAS), Beijing (China)
  4. Peking Univ., Beijing (China)
  5. Argonne National Lab. (ANL), Lemont, IL (United States)
  6. Univ. of New Haven, West Haven, CT (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); National Key Research and Development Program of China; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1510302
Grant/Contract Number:  
AC02-06CH11357; 2017YFB0602200
Resource Type:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Ni-Co alloy; activity; dry reforming; lattice contraction; methane

Citation Formats

Wu, Zhaoxuan, Yang, Bing, Miao, Shu, Liu, Wei, Xie, Jinglin, Lee, Sungsik, Pellin, Michael J., Xiao, Dequan, Su, Dangsheng, and Ma, Ding. Lattice Strained Ni-Co alloy as a High-Performance Catalyst for Catalytic Dry Reforming of Methane. United States: N. p., 2019. Web. doi:10.1021/acscatal.8b02821.
Wu, Zhaoxuan, Yang, Bing, Miao, Shu, Liu, Wei, Xie, Jinglin, Lee, Sungsik, Pellin, Michael J., Xiao, Dequan, Su, Dangsheng, & Ma, Ding. Lattice Strained Ni-Co alloy as a High-Performance Catalyst for Catalytic Dry Reforming of Methane. United States. doi:10.1021/acscatal.8b02821.
Wu, Zhaoxuan, Yang, Bing, Miao, Shu, Liu, Wei, Xie, Jinglin, Lee, Sungsik, Pellin, Michael J., Xiao, Dequan, Su, Dangsheng, and Ma, Ding. Fri . "Lattice Strained Ni-Co alloy as a High-Performance Catalyst for Catalytic Dry Reforming of Methane". United States. doi:10.1021/acscatal.8b02821.
@article{osti_1510302,
title = {Lattice Strained Ni-Co alloy as a High-Performance Catalyst for Catalytic Dry Reforming of Methane},
author = {Wu, Zhaoxuan and Yang, Bing and Miao, Shu and Liu, Wei and Xie, Jinglin and Lee, Sungsik and Pellin, Michael J. and Xiao, Dequan and Su, Dangsheng and Ma, Ding},
abstractNote = {Dry reforming of methane (DRM) is an effective route to convert methane and carbon dioxide to syngas. IN this work, we report an efficient nickel cobalt bimetallic catalyst with an activity of 4.97 molCH4 molNi-1s-1 at 800 °C. It is active at low temperature as well, and near thermodynamic equilibrium conversion was achieved as low as 350 °C, with a high yield of H2 implying inhibition of side reactions: i.e., a reverse water-gas shift (RWGS) reaction. The formation of Ni-Co alloy during the reaction was observed, and its lattice contraction was revealed by HAADF-STEM and EXAFS experiments. The lattice-strained Ni-Co alloy has good CO2 dissociation ability, which is responsible for its superior catalytic performance. Its weak chemisorption with H2 results in inhibition of RWGS side reactions. This research is helpful in the design and development of other metal alloy materials with novel structures and/or electronic configurations for catalytic applications.},
doi = {10.1021/acscatal.8b02821},
journal = {ACS Catalysis},
number = 4,
volume = 9,
place = {United States},
year = {2019},
month = {1}
}

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This content will become publicly available on January 4, 2020
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