Comparison of preparation methods for improving coke resistance of Ni-Ru/MgAl2O4 catalysts in dry reforming of methane for syngas production

Dahye Song, Unho Jung, Hyo Been Im, Tae Ho Lee, Young Eun Kim, Ki Bong Lee, Kee Young Koo

Research output: Contribution to journalArticlepeer-review

Abstract

A small loading of highly dispersed Ru on Ni/MgAl2O4 catalyst was investigated in the dry reforming of methane (DRM) process. The catalysts were synthesized by impregnation and deposition-precipitation methods; the DRM reaction was performed at CH4/CO2/N2 = 1/1/1 and 600‒750°C. The bimetallic Ni‒Ru catalysts exhibited improved reducibility and metal dispersion compared with that of the Ni catalyst. Among the synthesized catalysts, the Ru(D)/Ni(I)/MgAl2O4 catalyst had the highest metal dispersion (7.23%) and largest amount of CO2 desorption (135 μmol/g). Thus, this catalyst exhibited the highest CH4 conversion (85.6%) at 750°C. Additionally, coke deposition of only 2.69% occurred during the stability test.

Original languageEnglish
JournalEnergy Sources, Part A: Recovery, Utilization and Environmental Effects
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • bimetallic catalyst
  • Coke resistance
  • dry reforming of methane
  • Ru‒Ni/MgAlO
  • syngas

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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