Preparation of palladium catalysts by pretreatment steps in electroless plating toward partial oxidation of methanol with steam reforming

Yoshio Kobayashi, Yohei Tadaki, Katsumi Takahashi, Mikio Konno

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A previously proposed method for depositing Ag nanoparticles on silica particles was extended to the preparation of ZnO-supported Pd (Pd/ZnO) catalysts. The method presented in this work consists of two steps: (1) Sn 2+ ions are adsorbed on the surfaces of ZnO particles, and (2) Pd2+ ions added are reduced by oxidization of Sn2+ to Sn4+ and simultaneously adsorbed on the surface. TEM observations revealed that Pd nanoparticles with an average size of 2-3 nm were formed on the 20 nm ZnO particles. The Pd nanoparticles were transformed into a Pd-Zn alloy by partial oxidation and steam reforming of methanol, and consequently the Pd/ZnO attained CH3OH conversion efficiencies of 35-50% at reaction temperatures of 310-370°C.

Original languageEnglish
Pages (from-to)654-656
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume114
Issue number1331
DOIs
Publication statusPublished - 2006 Jan 1

Keywords

  • Alloys
  • Catalyst
  • Deposition
  • Nanoparticle
  • Palladium
  • Partial oxidation and steam reforming
  • Zinc oxide

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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