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

Masaki Okamoto, Tomoyuki Hirao, Tatsuya Yamaai

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)423-428
Number of pages6
JournalJournal of Catalysis
Volume276
Issue number2
DOIs
Publication statusPublished - 2010 Dec 15
Externally publishedYes

Fingerprint

Benzaldehydes
Polyethylene glycols
Hydrogenation
hydrogenation
glycols
polyethylenes
Polymers
selectivity
Metals
Benzyl Alcohol
catalysts
Catalysts
polymers
Palladium
metals
palladium
alcohols
Alcohols
products
Isoprene

Keywords

  • Modifier
  • Palladium metal catalyst
  • Partial hydrogenation
  • Polyethylene glycol

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Polymers as novel modifiers for supported metal catalyst in hydrogenation of benzaldehydes. / Okamoto, Masaki; Hirao, Tomoyuki; Yamaai, Tatsuya.

In: Journal of Catalysis, Vol. 276, No. 2, 15.12.2010, p. 423-428.

Research output: Contribution to journalArticle

Okamoto, Masaki ; Hirao, Tomoyuki ; Yamaai, Tatsuya. / Polymers as novel modifiers for supported metal catalyst in hydrogenation of benzaldehydes. In: Journal of Catalysis. 2010 ; Vol. 276, No. 2. pp. 423-428.
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