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

被引：17

作者：

Deng, Jiang ^{[1
]}

Gao, Min ^{[2
,3
]}

Hasegawa, Jun-ya ^{[3
]}

Zhang, Xiaoyu ^{[1
]}

Wang, Aiyong ^{[1
]}

Chen, Aling ^{[1
]}

Zhang, Dengsong ^{[1
]}

机构：

[1] Shanghai Univ, Coll Sci, Int Joint Lab Catalyt Chem, Shanghai 200444, Peoples R China

[2] Hokkaido Univ, Inst Chem React Design & Discovery WPI ICReDD, Sapporo 0010021, Japan

[3] Hokkaido Univ, Inst Catalysis, Sapporo 0010021, Japan

来源：

CCS CHEMISTRY | 2023年 / 5卷 / 09期

基金：

中国国家自然科学基金;

关键词：

dry reforming of methane; coking resistance; meth-ane conversion; DEHYDROGENATION; CO2;

D O I：

10.31635/ccschem.022.202202342

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Metal oxides have been used as the supports for heterogeneous catalysis for many 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.

引用

页码：2111 / 2124

页数：14

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