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Promoting H 2 Activation over Molybdenum Carbide by Modulation of Metal‐Support Interaction for Efficient Catalytic Hydrogenation
Author(s) -
Ma Ling,
Chen Ping,
Zhang Guangji,
Wang Liqiang,
Tang Feiying,
Zhao Xiaojun,
Wang Jin,
Huang Jianhan,
Liu YouNian
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100581
Subject(s) - catalysis , molybdenum , carbide , selectivity , transition metal , metal , carbon fibers , chemistry , activation energy , materials science , inorganic chemistry , organic chemistry , composite number , composite material
Transition metal carbides (TMCs) have been used extensively as catalysts for hydrogenation reactions. However, TMC catalysts suffer from low activity for H 2 activation, which is vital to their hydrogenation performance. Herein, we report a feasible strategy to improve the ability of TMCs (e. g., Mo 2 C) for H 2 activation by modulation of the metal‐support interaction (MSI). The MSI can be tuned by introducing N element into carbon supports. Specifically, N can modulate the orbital structure of Mo to promote H 2 activation. Experimental and theoretical results reveal that H 2 activation ability of the metal sites can be altered by loading them onto carbon supports, and optimized by doping N into the corresponding carbon matrices. Consequently, N‐doped carbon‐supported Mo 2 C (Mo 2 C/NC) catalyst, possessing improved H 2 activation ability, displays remarkably enhanced catalytic hydrogenation performance for the reduction of nitro compounds. The conversion and selectivity over Mo 2 C/NC are nearly 100 % under mild conditions.