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Type: Artigo de periódico
Title: Germanium and silicon compounds as promoters for Re2O7/SiO2-Al2O3 metathesis catalysts
Author: Buffon, R
Marochio, IJ
Rodella, CB
Mol, JC
Abstract: The effect of replacement of R4Sn by germanium and silicon derivatives as the promoter for the catalyst system Re2O7/ SiO2-Al2O3 in the metathesis of hex-1-ene, and the system Re2O7/B2O3/SiO2-Al2O3 in the metathesis of methyl oleate, was studied. The new promoters react slowly with the rhenium oxide. An activation time of about 15 min at temperatures varying from 50 to 75 degreesC is required for obtaining a good catalytic activity. These promoters can replace the toxic tin compounds, although they give rise to lower turnover numbers in the metathesis of methyl oleate. (C) 2002 Elsevier Science B.V. All rights reserved.
Subject: olefin metathesis
rhenium oxide catalysts
methyl oleate
Country: Holanda
Editor: Elsevier Science Bv
Citation: Journal Of Molecular Catalysis A-chemical. Elsevier Science Bv, v. 190, n. 41671, n. 171, n. 176, 2002.
Rights: fechado
Identifier DOI: 10.1016/S1381-1169(02)00244-3
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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