Structured silicalite-1 encapsulated Ni catalyst supported on SiC foam for dry reforming of methane

Huanhao Chen, Yan Shao, Yibing Mu, Huan Xiang, Rongxin Zhang, Yabin Chang, Christopher Hardacre, Chularat Wattanakit, Yilai Jiao, Xiaolei Fan

Research output: Journal PublicationArticlepeer-review

11 Citations (Scopus)

Abstract

Structured silicalite-1 zeolite encapsulated Ni catalyst supported on silicon carbide foam (i.e., Ni@S1-SiC) was prepared using a new yet simple one-pot method, showing the significantly improved anti-sintering and anti-coking performance in comparison with the conventional supported and encapsulated Ni catalysts (i.e., Ni/S1, Ni/S1-SiC, and Ni@S1), in catalytic dry reforming of methane (DRM). The developed Ni0.08@S1-SiC catalyst showed high CO2/CH4 conversions of >85% and H2/CO molar ratio of >0.85 at 700°C, outperforming other control catalysts under investigation. Additionally, the Ni0.08@S1-SiC catalyst demonstrated high turnover frequency (TOF) values of ~5.6 and ~2.1/s regarding to CO2/CH4 conversions at 400°C, exhibiting excellent stability and low pressure-drop during 100 hr on stream evaluation. Post-reaction characterization of the used catalysts demonstrated that the combination of zeolite encapsulated Ni catalysts and SiC foam enabled well-dispersed and ultrafine Ni nanoparticles, low pressure drop and intensified transfer steps, presented excellent anti-sintering and anti-coking abilities.

Original languageEnglish
Article numbere17126
JournalAICHE Journal
Volume67
Issue number4
DOIs
Publication statusPublished - Apr 2021
Externally publishedYes

Keywords

  • anti-sintering and -coking
  • dry reforming of methane (DRM)
  • encapsulated Ni catalyst
  • silicalite-1
  • silicon carbide (SiC) foam

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering (all)

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