Polymers as novel modifiers for supported metal catalyst in hydrogenation of benzaldehydes

Masaki Okamoto, Tomoyuki Hirao, Tatsuya Yamaai

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Polyethylene glycol (PEG) was impregnated on a palladium metal supported on silica gel and used in a catalyst for hydrogenation of benzaldehydes. In the vapor-phase flow reaction, the PEG modification improved catalytic activity and selectivity for a partially hydrogenated product, benzyl alcohol. In isoprene hydrogenation, selectivity for partially hydrogenated products, monoenes, was also enhanced. X-ray photoelectron spectroscopy (XPS) analysis of the modified catalysts revealed that the modification with PEG makes the palladium surface negatively charged, possibly leading to an increase in the selectivity for the partially hydrogenated product caused by enhancement of its desorption from the surface. In the liquid-phase hydrogenation of benzaldehyde, the PEG modification also increased the selectivity for benzyl alcohol.

本文言語English
ページ(範囲)423-428
ページ数6
ジャーナルJournal of Catalysis
276
2
DOI
出版ステータスPublished - 2010 12 15
外部発表はい

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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