Carbon dioxide reforming of methane over co-precipitated Ni-CeO 2, Ni-ZrO2 and Ni-Ce-ZrO2 catalysts

Hyun Seog Roh, H. S. Potdar, Ki Won Jun

Research output: Contribution to journalConference article

154 Citations (Scopus)

Abstract

A co-precipitation method was employed to prepare nickel oxide dispersed on CeO2, ZrO2 and cubic Ce0.8Zr 0.2O2 support to obtain catalysts useful for carbon dioxide reforming of methane reaction. The Ni-CeO2 and Ni-Ce-ZrO 2 catalysts showed relatively high activity and stability, while the Ni-ZrO2 catalyst deactivated in the initial stage of the reaction due to serious carbon formation. The co-precipitated Ni-Ce-ZrO2 catalyst exhibited the highest catalytic activity (CH4 conversion >97% at 800°C) among the catalysts tested and the activity was maintained without significant loss during the reaction for 100h. The enhanced catalytic activity and stability of the co-precipitated Ni-Ce-ZrO2 catalyst is attributed to the combination of nano-crystalline nature of cubic Ce 0.8Zr0.2O2 support and finely dispersed nano-sized NiOx crystallites resulting in intimate contact between Ni and support, better Ni dispersion, higher Ni surface area and enhanced oxygen transfer during the reaction.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalCatalysis Today
Volume93-95
DOIs
Publication statusPublished - 2004 Sep 1
EventSelections from the Presentations of the 3rd Asia-Pacific Congress - Dalian, China
Duration: 2003 Oct 122003 Oct 12

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this