Zeolite-supported ultra-small nickel as catalyst for selective oxidation of methane to syngas

Shuhei Yasuda, Ryota Osuga, Yusuke Kunitake, Kazuya Kato, Atsushi Fukuoka, Hirokazu Kobayashi, Min Gao, Jun ya Hasegawa, Ryo Manabe, Hisashi Shima, Susumu Tsutsuminai, Toshiyuki Yokoi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The development of simple catalysts with high performance in the selective oxidation of methane to syngas at low temperature has attracted much attention. Here we report a nickel-based solid catalyst for the oxidation of methane, synthesised by a facile impregnation method. Highly dispersed ultra-small NiO particles of 1.6 nm in size are successfully formed on the MOR-type zeolite. The zeolite–supported nickel catalyst gives continuously 97–98% methane conversion, 91–92% of CO yield with a H2/CO ratio of 2.0, and high durability without serious carbon deposition onto the catalyst at 973 K. DFT calculations demonstrate the effect of NiO particle size on the C-H dissociation process of CH4. A decrease in the NiO particle size enhances the production of oxygen originating from the NiO nanoparticles, which contributes to the oxidation of methane under a reductive environment, effectively producing syngas.

Original languageEnglish
Article number129
JournalCommunications Chemistry
Volume3
Issue number1
DOIs
Publication statusPublished - 2020 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Environmental Chemistry
  • Materials Chemistry

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