Unravelling the Anomalous Coking Resistance over Boron Nitride-Supported Ni Catalysts for Dry Reforming of Methane  

作　　者：Jiang Deng Min Gao Jun-ya Hasegawa Xiaoyu Zhang Aiyong Wang Aling Chen Dengsong Zhang 

机构地区：[1]International Joint Laboratory of Catalytic Chemistry,College of Sciences,Shanghai University,Shanghai 200444 [2]Institute for Chemical Reaction Design and Discovery(WPI-ICReDD),Hokkaido University,Sapporo 001-0021 [3]Institute for Catalysis,Hokkaido University,Sapporo 001-0021

出　　处：《CCS Chemistry》2023年第9期2111-2124,共14页中国化学会会刊（英文）

基　　金：financial support from the National Natural Science Foundation of China(grant nos.22006098 and 22125604);Shanghai Sailing Program(grant no.20YF1413300);J.D.thanks Dr.Lei Xie at Fudan University for fruitful discussions.The computational part is also supported by the JSPS KAKENHI(grant no.JP20K05217);the supercomputer at RCCS(grant no.22-IMS-C002),Okazaki,Japan.

摘　　要：Metal oxides have been used as the supports for heterogeneous catalysis formany years,but they still suffer from coking in some high-temperature applications.The main reasons for coking are the uncontrollable dissociation of C-H and the overbalance between carbon deposition and removal.Herein,we find a boron nitride(BN)-immobilized Ni catalyst shows unprecedented coking resistance in dry reforming of methane via the incomplete decomposition of methane.Unlike the Ni-based catalysts supported by traditional metal oxides,BN-supported Ni accelerates the first C-H dissociation while inhibiting the breaking of the final C-H bond;hence,the suppression of the complete decomposition of methane thoroughly addresses the coking issue.This work reveals the fundamental reason for the coking resistance over BN-supported Ni catalysts is selective activation of the C-H bond,which can provide an inspiring idea for other applications.

关 键 词：heterogenous catalysis boron nitrides dry reforming of methane coking resistance methane conversion 

分 类 号：O643.36[理学—物理化学]