Selective hydrogenation of crotonaldehyde in liquid-phase over Au/Mg2AlO hydrotalcite catalysts

被引：36

作者：

Chen, Hsing-Yu ^{[2
]}

Chang, Ching-Tu ^{[3
]}

Chiang, Shu-Jen ^{[2
]}

Liaw, Biing-Jye ^{[1
]}

Chen, Yin-Zu ^{[2
]}

机构：

[1] Nanya Inst Technol, Grad Sch Mat Appl Technol, Dept Chem & Mat Engn, Jhongli 32091, Taiwan

[2] Natl Cent Univ, Dept Chem & Mat Engn, Jhongli 32001, Taiwan

[3] Inst Nucl Energy Res Atom Energy Council, Longtan 32546, Taiwan

来源：

APPLIED CATALYSIS A-GENERAL | 2010年 / 381卷 / 1-2期

关键词：

Gold catalysts; Hydrotalcite; Promoters; Selective hydrogenation; Crotonaldehyde; GOLD CATALYSTS; CO OXIDATION; ACTIVE-SITES; CINNAMALDEHYDE; IDENTIFICATION; NANOPARTICLES; TIO2;

D O I：

10.1016/j.apcata.2010.04.009

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 liquid-phase selective hydrogenation of crotonaldehyde to crotyl alcohol over Au supported on a solid base of Mg2AlO-hydrotalcite (Mg/Al = 2) was investigated. The 2% Au/Mg2AlO catalysts were prepared using a modified deposition precipitation method without adjusting the pH of the initial HAuCl4 solution. The influence of the calcination temperatures of the Mg2AlO support and of the 2% Au/Mg2AlO catalyst, and the effects of the reaction medium (solvent), temperature, pressure and concentration were studied. The promoter, Fe, Moor W, was co-deposited with Au on Mg2AlO to maximize the yield of crotyl alcohol. 2% Au/Mg2AlO was compared with Au supported on FeOOH, Fe2O3, CeO2,TiO2 and Al2O3. The correlation between the gold states (Au3+/Au-0) and the activity and selectivity of crotyl alcohol was extensively examined. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：209 / 215

页数：7

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