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From molecule to material: Mg₂Sn as hydrogenation catalyst

Claus, Peter and Raif, Fabian and Cavet, Sylvia and Demirel-Gülen, Séval and Radnik, Jörg and Schreyer, Martin and Fässler, Thomas Friedrich :
From molecule to material: Mg₂Sn as hydrogenation catalyst.
[Online-Edition: http://dx.doi.org/10.1016/j.catcom.2006.01.027]
In: Catalysis Communications, 7 (9) pp. 618-622.
[Article] , (2006)

Official URL: http://dx.doi.org/10.1016/j.catcom.2006.01.027

Abstract

The liquid-phase hydrogenation of citral has been studied for the first time over an ionogenic Zintl phase, Mg2Sn. By using this unsupported alloy, citral conversion was 20% at 448 K and the product mixture was mainly comprised of geraniol, nerol, citronellal and citronellol. The product ratio of the formation of unsaturated allyl-type alcohols to the formation of citronellal + citronellol is similar to that obtained with the unsupported alloy Ru3Sn7 and a silica supported Ru–Sn catalyst. The results clearly indicate that the polar character of active sites is a prerequisite for the chemisorption of the polar C=O group and, thus, must be a key factor in controlling the selectivity of the hydrogenation of α,β-unsaturated aldehydes.

Item Type: Article
Erschienen: 2006
Creators: Claus, Peter and Raif, Fabian and Cavet, Sylvia and Demirel-Gülen, Séval and Radnik, Jörg and Schreyer, Martin and Fässler, Thomas Friedrich
Title: From molecule to material: Mg₂Sn as hydrogenation catalyst
Language: English
Abstract:

The liquid-phase hydrogenation of citral has been studied for the first time over an ionogenic Zintl phase, Mg2Sn. By using this unsupported alloy, citral conversion was 20% at 448 K and the product mixture was mainly comprised of geraniol, nerol, citronellal and citronellol. The product ratio of the formation of unsaturated allyl-type alcohols to the formation of citronellal + citronellol is similar to that obtained with the unsupported alloy Ru3Sn7 and a silica supported Ru–Sn catalyst. The results clearly indicate that the polar character of active sites is a prerequisite for the chemisorption of the polar C=O group and, thus, must be a key factor in controlling the selectivity of the hydrogenation of α,β-unsaturated aldehydes.

Journal or Publication Title: Catalysis Communications
Volume: 7
Number: 9
Divisions: 07 Fachbereich Chemie
07 Fachbereich Chemie > Fachgebiet Technische Chemie > Technische Chemie II
07 Fachbereich Chemie > Fachgebiet Technische Chemie
Date Deposited: 20 Mar 2009 08:55
Official URL: http://dx.doi.org/10.1016/j.catcom.2006.01.027
Identification Number: doi:10.1016/j.catcom.2006.01.027
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