Defect-induced efficient dry reforming of methane over two-dimensional Ni/h-boron nitride nanosheet catalysts

• Cao, Yang

• Maitarad, Phornphimon

• Gao, Min

• Taketsugu, Tetsuya

• Li, Hongrui

• Yan, Tingting

• Shi, Liyi

• Zhang, Dengsong

Abstract

Efficient enhancement of catalytic stability and coke-resistance is a crucial aspect for dry reforming of methane. Here, we report Ni nanoparticles embedded on vacancy defects of hexagonal boron nitride nanosheets (Ni/h-BNNS) can optimize catalytic performance by taming two-dimensional (2D) interfacial electronic effects. Experimental results and density functional theory calculations indicate that surface engineering on defects of Ni/h-BNNS catalyst can strongly influence metal-support interaction via electron donor/acceptor mechanisms and favor the adsorption and catalytic activation of CH4 and CO2. The Ni/h-BNNS catalyst exhibits superior catalytic performance during a 120 h durability test. Furthermore, in situ techniques further reveal possible recovery mechanism of the active Ni sites, identifying the enhanced catalytic activities of the Ni/h-BNNS catalyst. This work highlights promotional mechanism of defect-modified interface and should be equally applicable for design of thermochemically stable catalysts.

Journal

• Applied Catalysis B-environmental

  Applied Catalysis B-environmental 238 51-60, 2018-12-15

  Elsevier

Keywords

• Dry reforming of methane
• Catalysts
• Boron nitride
• Density functional calculations

Details

• CRID: 1050569015563899904
• NII Article ID: 120006940627
• DOI: 10.1016/j.apcatb.2018.07.001
• HANDLE: 2115/79972
• ISSN: 09263373
• Web Site: https://api.elsevier.com/content/article/PII:S092633731830609X?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S092633731830609X?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • Crossref
  • CiNii Articles
  • KAKEN