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Active Phase Structure of the SiO2-supported Nickel Phosphide Catalysts for Non-oxidative Coupling of Methane (NOCM) Reactions

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Title: Active Phase Structure of the SiO2-supported Nickel Phosphide Catalysts for Non-oxidative Coupling of Methane (NOCM) Reactions
Authors: Al Rashid, M. H. Browse this author
Dipu, A. Browse this author
Nishikawa, Y. Browse this author
Ogihara, H. Browse this author
Inami, Y. Browse this author
Obuchi, S. Browse this author
Yamanaka, I. Browse this author
Nagamatsu, S. Browse this author
Kido, D. Browse this author
Asakura, K. Browse this author →KAKEN DB
Keywords: EXAFS
Nickel phosphide
Ni2P
Non-oxidative coupling of methane
Issue Date: 15-Feb-2020
Publisher: 日本表面科学会, The Surface Science Society of Japan, SSSJ
Journal Title: E-journal of surface science and nanotechnology
Volume: 18
Start Page: 24
End Page: 27
Publisher DOI: 10.1380/ejssnt.2020.24
Abstract: SiO2-supported NiP binary catalysts show high activity for the non-oxidative coupling of methane (NOCM) reactions, one of the most difficult but important catalytic reactions. We have studied the SiO2-supported NiP binary catalysts by extended X-ray absorption fine structure (EXAFS) with different Ni : P ratios. NiP binary catalyst with the composition of Ni : P = 1 : 1 was the most active among the three different compositions. EXAFS showed that the NiP catalyst with Ni : P = 1 : 1 had a Ni2P structure. The structure was stable after the high temperature (1173 K) NOCM reaction conditions for 12 h. It is interesting that Ni2P shows high catalytic activities in many other reactions such as hydrodesulfurization, hydrogen evolution reaction, and so on. It may be due to the appropriate electronic and geometrical modification of a Ni active site by P.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/78654
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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