Continuous selective hydrogenation of citral in a trickle-bed reactor using ionic liquid modified catalysts

被引:31
|
作者
Woerz, Nicolai [1 ]
Arras, Juergen [1 ]
Claus, Peter [1 ]
机构
[1] Tech Univ Darmstadt, Ernst Berl Inst, Darmstadt, Germany
关键词
Trickle-bed reactor; Liquid phase hydrogenation; Citral; Ionic liquid; SCILL catalyst; ALPHA; BETA-UNSATURATED ALDEHYDES;
D O I
10.1016/j.apcata.2010.06.025
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
The influence of the ionic liquid [BMIM][N(CN)(2)] on the palladium catalyzed hydrogenation of citral in a trickle-bed reactor has been investigated. Applying the SCILL concept (solid catalyst with ionic liquid layer), it was possible to attain citronellal selectivities close to 100% at the cost of catalyst activity. However, the yield of this intermediate was approximately four times higher compared to the neat palladium catalyst. The latter and its SCILL counterpart both seem to have long-term stability, which is relevant for any future industrial application. This is the first time that SCILL systems have been compared directly to their IL-free equivalents in continuous mode. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:319 / 324
页数:6
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