Completely selective hydrogenation of trans-cinnamaldehyde to cinnamyl alcohol promoted by a Ru-Pt bimetallic catalyst supported on MCM-48 in supercritical carbon dioxide

被引：42

作者：

Chatterjee, M ^{[1
]}

Ikushima, Y ^{[1
]}

Zhao, FY ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Supercrit Fluid Res Ctr, Miyagino Ku, Sendai, Miyagi 9838551, Japan

来源：

NEW JOURNAL OF CHEMISTRY | 2003年 / 27卷 / 03期

关键词：

D O I：

10.1039/b210161k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Supercritical carbon dioxide ( scCO(2)) is a unique reaction medium for the selective hydrogenation of cinnamaldehyde using a well-defined Ru-Pt bimetallic catalyst supported on MCM-48. The reaction is completely selective to the unsaturated alcohol in supercritical carbon dioxide. The selectivity to the desired unsaturated alcohol shows a significant pressure dependence. By varying the pressure at the constant reaction temperature of 323 K, we are able to optimize the selectivity of cinnamyl alcohol to 100%. This is a particularly dramatic enhancement compared to that in organic solvents and under solventless conditions, where Ru-Pt bimetallic catalyst produces cinnamyl alcohol along with hydrocinnamaldehyde and 3-phenylpropanol. More importantly, the excellent physicochemical properties of the scCO(2) medium provide a significant influence on the selectivity, which goes beyond that of simple solvent replacement only.

引用

页码：510 / 513

页数：4

共 37 条

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