Specific performance of silica-coated Ni catalysts for the partial oxidation of methane to synthesis gas

Sakae Takenaka, Hiroshi Umebayashi, Eishi Tanabe, Hideki Matsune, Masahiro Kishida

Research output: Contribution to journalArticlepeer-review

123 Citations (Scopus)

Abstract

Silica-supported Ni catalysts were prepared by using water-in-oil typed microemulsion. By preparation using the microemulsion, Ni metal particles with diameters < ca. 5 nm were covered uniformly with silica layers with thickness of ca. 10 nm, whereas Ni metal particles were supported on the outer surface of silica by a conventional impregnation method. The Ni metal covered with silica (coat-Ni) showed excellent catalytic performance for the partial oxidation of methane into synthesis gas. Coat-Ni showed a high activity and a long life for the partial oxidation of methane at temperatures above 973 K to form CO and hydrogen, whereas Ni metal catalyst supported on silica was rapidly deactivated for the reaction. Ni K-edge XANES/EXAFS and temperature-programmed reduction for these catalysts showed that Ni metal particles in coat-Ni strongly interacted with silica. The strong interaction of Ni metal particles with silica would improve their catalytic performance for the partial oxidation of methane into synthesis gas.

Original languageEnglish
Pages (from-to)392-400
Number of pages9
JournalJournal of Catalysis
Volume245
Issue number2
DOIs
Publication statusPublished - Jan 25 2007

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Specific performance of silica-coated Ni catalysts for the partial oxidation of methane to synthesis gas'. Together they form a unique fingerprint.

Cite this