IMPORTANCE OF OXYGEN-SURFACE GROUPS IN CATALYTIC DEHYDRATION AND DEHYDROGENATION OF BUTAN-2-OL PROMOTED BY CARBON CATALYSTS

被引：52

作者：

SZYMANSKI, GS

RYCHLICKI, G

机构：

[1] Institute of Chemistry, Nicolas Copernicus University

来源：

CARBON | 1991年 / 29卷 / 4-5期

关键词：

CARBON; SURFACE OXIDES; CATALYSIS; DEHYDRATION; DEHYDROGENATION; ALCOHOLS;

D O I：

10.1016/0008-6223(91)90112-V

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：

A series of carbons of different surface chemical nature has been prepared from poly(furfuryl alcohol), and the catalytic activity was tested for dehydration and dehydrogenation of butan-2-ol in the temperature range of 418 to 448 K. The products are the cis and trans isomers of butene-2 and methylethyl ketone (MEK), respectively. It was found that the dehydration activity results from the presence of carboxyl groups of varying acid strength, whereas the dehydrogenation activity results from the simultaneous presence of Lewis acid and Lewis base sites. Introduction of Zn2+ or Ni2+ ions enhances the dehydrogenation activity and selectivity. For all catalytically active carbons, an increase of temperature decreases the selectivity for the ketone.

引用

页码：489 / 498

页数：10

共 59 条

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