Formation and characteristic properties of carbonaceous species on nickel-magnesia solid solution catalysts during CH4-CO2 reforming reaction

Yang Guang Chen, Keiichi Tomishige, Kaoru Fujimoto

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)

Abstract

Carbonaceous species formed during the reforming of CH4 with CO2 over a series of NixMg1-xO solid solution catalysts and MgO-supported Ni catalysts were characterized by temperature-programmed hydrogenation (TPH) method. Two peaks appeared in the TPH spectra: one between 550 and 700 K (α-carbon) and another above 873 K (β-carbon). It was found that a good relationship exists between the quantity of α-carbon species and the catalytic activity, indicating that α-carbon should be the reaction intermediate. In addition, the amount of β-carbon increased with increasing reaction time, especially on the supported Ni/MgO catalysts which make inactive carbon during the CH4-CO2 reforming reaction.

Original languageEnglish
Pages (from-to)L11-L17
JournalApplied Catalysis A: General
Volume161
Issue number1-2
DOIs
Publication statusPublished - 1997 Nov 4
Externally publishedYes

Keywords

  • Deposited carbon
  • Magnesia supported nickel catalyst
  • Methane reforming with carbon dioxide
  • Solid solution
  • Temperature-programmed hydrogenation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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