Consecutive hydrogenation of benzaldehyde over Pd catalysts - Influence of supports and sulfur poisoning

被引：117
作者：
Pinna, F
Menegazzo, F
Signoretto, M
Canton, P
Fagherazzi, G
Pernicone, N
机构：
[1] Univ Venice, Dept Chem, I-30123 Venice, Italy
[2] Univ Venice, Dept Phys Chem, I-30123 Venice, Italy
来源：
APPLIED CATALYSIS A-GENERAL | 2001年 / 219卷 / 1-2期
关键词：
benzaldehyde hydrogenation; supported palladium; sulfur poisoning;
D O I：
10.1016/S0926-860X(01)00685-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pd catalysts on different supports (active carbon, silica, alumina) were studied for the selective hydrogenation of benzaldehyde to benzyl alcohol. They were characterized by TPR, CO chemisorption and XRD. Batch hydrogenation tests were performed before and after sulfur poisoning. Strong metal-support interaction was found for Pd/alumina, giving high Pd dispersion. Chemisorption stoichiometry Pd/CO = 2 was confirmed again. While Pd/C has the highest activity for benzaldehyde hydrogenation, a satisfactory selectivity to benzyl alcohol requires an oxidic carrier or proper sulfur poisoning of Pd/C. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：195 / 200
页数：6
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