Nanoparticulate Tungsten Oxide for Catalytic Epoxidations

被引：41

作者：

Hammond, Ceri ^{[1
]}

Straus, Julian ^{[1
]}

Righettoni, Marco ^{[2
]}

Pratsinis, Sotiris E. ^{[2
]}

Hermans, Ive ^{[1
]}

机构：

[1] ETH, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland

[2] ETH, Dept Mech & Proc Engn, Particle Technol Lab, CH-8092 Zurich, Switzerland

来源：

ACS CATALYSIS | 2013年 / 3卷 / 03期

关键词：

epoxidation; Lewis acid catalysis; sustainable chemistry; flame spray pyrolysis; FLAME SPRAY-PYROLYSIS; HYDROGEN-PEROXIDE; OLEFINS; OXIDATIONS; ZEOLITE; ALKENES; ACIDS; BETA;

D O I：

10.1021/cs300826c

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 combination of spectroscopic and catalytic investigations led to the surprising conclusion that not isolated W-VI species but WO3 oxide is the most active and stable phase for olefin epoxidation with H2O2. Optimal activity was subsequently found for a nanoparticulate WO3 prepared by flame aerosol technology. This material is characterized by a 50% increase in activity per W-VI site, and a 35-fold increase in space time yield, compared with the current benchmark catalyst.

引用

页码：321 / 327

页数：7

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