Comparative study of Rh-MoO x and Rh-ReO x supported on SiO 2 for the hydrogenolysis of ethers and polyols

Shuichi Koso, Hideo Watanabe, Kazu Okumura, Yoshinao Nakagawa, Keiichi Tomishige

Research output: Contribution to journalArticlepeer-review

142 Citations (Scopus)

Abstract

Rh-MO x/SiO 2 (M=Mo or Re) catalysts shows the high activity of the hydrogenolysis of C-O bond in the substrates with CH 2OH group such as tetrahydrofurfuryl alcohol, various diols and their ethers. Characterization results suggest the catalyst structure were isolated MoO x species and small ReO x cluster with low valence attached on the surface of Rh metal particles. It is characteristic that the reactivity of the C-O bond in the -O-C-C-CH 2OH is higher than that in the -O-C-CH 2OH over Rh-MoO x/SiO 2, and Rh-ReO x/SiO 2 has the opposite tendency to Rh-MoO x/SiO 2. The difference in the regioselectivity of the hydrogenolysis over Rh-MoO x/SiO 2 and Rh-ReO x/SiO 2 can be related to the different structure of isolated MoO x species and small ReO x clusters.

Original languageEnglish
Pages (from-to)27-37
Number of pages11
JournalApplied Catalysis B: Environmental
Volume111-112
DOIs
Publication statusPublished - 2012 Jan 12

Keywords

  • Hydrogenolysis
  • Low valent Re
  • Low valent mo
  • Metal-oxide interaction
  • Regioselectivity

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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