CHEMOSELECTIVE HYDROGENATION OF UNSATURATED CARBONYL-COMPOUNDS OVER GROUP-8 AND GROUP-9 TITANIA-SUPPORTED METAL-CATALYSTS

被引：52

作者：

KASPAR, J

GRAZIANI, M

ESCOBAR, GP

TROVARELLI, A

机构：

[1] INT CTR SCI & HIGH TECHNOL, I-34100 TRIESTE, ITALY

[2] UNIV UDINE, IST CHIM, I-33100 UDINE, ITALY

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1992年 / 72卷 / 02期

关键词：

D O I：

10.1016/0304-5102(92)80049-M

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：

Chemoselective hydrogenation Of unsaturated carbonyl compounds over Groups 8 and 9 titania-supported metal catalysts was investigated in a pulse reactor. It is shown that when a conjugated aldehyde such as crotonaldehyde is hydrogenated, a high temperature reduction enchances the selectivity of the iridium and ruthenium catalysts in the formation of the unsaturated alcohol, which suggests that decoration of metal particles by titania sub-oxides generates new catalytic sites selective for carbonyl group hydrogenation. However, such behaviour is not observed for the unsaturated ketones.

引用

页码：243 / 251

页数：9

共 28 条

[11] A MEERWEIN - PONNDORF - VERLEY TYPE REDUCTION OF ALPHA,BETA-UNSATURATED KETONES TO ALLYLIC ALCOHOLS CATALYZED BY MGO [J].