Glycerol Valorization: Dehydration to Acrolein Over Silica-Supported Niobia Catalysts

被引：67

作者：

Shiju, N. R. ^{[1
,2
]}

Brown, D. R. ^{[2
]}

Wilson, K. ^{[3
]}

Rothenberg, G. ^{[1
]}

机构：

[1] Univ Amsterdam, Von Hoff Inst Mol Sci, Amsterdam, Netherlands

[2] Univ Huddersfield, Dept Chem & Biol Sci, Mat & Catalysis Res Ctr, Huddersfield HD1 3DH, W Yorkshire, England

[3] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Cardiff CF10 3AT, S Glam, Wales

来源：

TOPICS IN CATALYSIS | 2010年 / 53卷 / 15-18期

关键词：

Glycerol; Niobia; Microcalorimetry; Heterogeneous catalyst; Renewable; GAS-PHASE DEHYDRATION; SUSTAINABLE PRODUCTION; BECKMANN REARRANGEMENT; SUPERCRITICAL WATER; ACID; CONVERSION; CHEMICALS;

D O I：

10.1007/s11244-010-9566-9

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The catalytic dehydration of glycerol to acrolein is investigated over silica-supported niobia catalysts in a continuous fixed-bed gas-phase reactor. Various supported niobia catalysts are prepared and characterized using surface analysis and spectroscopic methods (XRD, UV-Vis, XPS, N(2) adsorption), as well as with ammonia adsorption microcalorimetry. Good results are obtained with initial glycerol conversions of over 70% and with 50-70% selectivity to acrolein. We investigate the influence of changing the catalyst acid strength by varying the niobia content and catalyst calcination temperature. Glycerol conversion and acrolein selectivity depend on the surface acid strength. Catalyst deactivation by coking is also observed, but simple oxidative treatment in air restores the activity of the catalysts completely.

引用

页码：1217 / 1223

页数：7

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