Reactions of organosilicon compounds on metals. Part IV1 1 For Part III see [6]. Presented at the 5th Belgian-Hungarian Colloquium on Catalysis Visegrad(H), 8-12, October 1989.. Effects of alkylhydrosilanes on activity of copper and noble metals in transformations of 1-pentene

Árpád Molanár, János T. Kiss, Imre Bucsi, Tamás Katona, Mihály Bartók

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Abstract

Alkylhydrosilanes (triethylsilane, dipropylsilane and amylsilane) were observed to exert strong poisoning effects on the hydrogenation and isomerization of 1-pentene on Cab-O-Sil®-supported Cu, Rh and Pt. The Si-C bond-breaking ability of the metals (pulse experiments in H2) also exhibited serious self-poisoning with increasing pulse number. The poisoning activity of these silanes increased with increasing number of Si-H bonds in the molecules (Et3SiH < Pr2SiH2 < AmSiH3) and with increasing temperature. The sensitivity of the metals to poisoning increased in the sequence Rh < Cu < Pt. A correlation was established between the poisoning ability of the molecules and the quantity of chemisorbed/transformed silanes resulting in strongly-bound surface residues.

Original languageEnglish
Pages (from-to)307-317
Number of pages11
JournalJournal of molecular catalysis
Volume61
Issue number3
DOIs
Publication statusPublished - Sep 1 1990

ASJC Scopus subject areas

  • Engineering(all)

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