Preparation and characterization of polymer-protected Pt/Co bimetallic colloids and their catalytic properties in the selective hydrogenation of cinnamaldehyde

被引：81

作者：

Yu, WY ^{[1
]}

Wang, Y ^{[1
]}

Liu, HF ^{[1
]}

Zheng, W ^{[1
]}

机构：

[1] CHINESE ACAD SCI,INST CHEM,BEIJING 100080,PEOPLES R CHINA

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1996年 / 112卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Pt/Co bimetallic colloid; selective hydrogenation; cinnamaldehyde;

D O I：

10.1016/1381-1169(96)00223-3

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：

Polymer-protected Pt/Co bimetallic colloids with Pt/Co molar ratios of 3:1 and 1:1 have been prepared by the polyol process and characterized by TEM and XRD. Over the above Pt/Co bimetallic colloid catalyst (Pt/Co = 3:1), cinnamaldehyde can be selectively hydrogenated to cinnamyl alcohol with 99.8% selectivity at 96.2% conversion. The activity and selectivity can be affected by H2O and NaOH added to the reaction system; the former leads to a highly polar solution and the latter retards the olefinic hydrogenation. The Pt/Co bimetallic colloid is stable enough to withstand the hydrogenation reaction at 333 K and 4.0 MPa.

引用

页码：105 / 113

页数：9

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