Ketonization of acetic acid on titania-functionalized silica monoliths

被引：82

作者：

Martinez, R ^{[1
]}

Huff, MC ^{[1
]}

Barteau, MA ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

来源：

JOURNAL OF CATALYSIS | 2004年 / 222卷 / 02期

关键词：

acetic acid ketonization; acetone; TiO(2) catalyst; monolith catalyst; short contact time;

D O I：

10.1016/j.jcat.2003.12.002

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：

Titania-functionalized monolith catalysts operated at short contact times are highly selective for the formation of ketones from carboxylic acids. The selectivity of ketonization of acetic acid to form acetone over such catalysts varies little as the conversion is varied from 3 to 100%. These results demonstrate that ketonization is not a sequential reaction proceeding via a gaseous ketene product. The selectivity for ketene versus ketone formation is determined by the intrinsic chemistry of the catalyst, and cannot be manipulated by contact time or conversion variations. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：404 / 409

页数：6

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