Tungstate promoted vanadium phosphate catalysts for the gas phase oxidation of methanol to formaldehyde

被引：13

作者：

Behera, Gobinda C. ^{[1
]}

Parida, Kulamani ^{[1
]}

Dummer, Nicholas F. ^{[2
]}

Whiting, Gareth ^{[2
]}

Sahu, Nruparaj ^{[1
]}

Carley, Albert F. ^{[2
]}

Conte, Marco ^{[2
]}

Hutchings, Graham J. ^{[2
]}

Bartley, Jonathan K. ^{[2
]}

机构：

[1] CSIR Inst Minerals & Mat Technol, Bhubaneswar 751013, Odisha, India

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

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 06期

关键词：

ACTIVE HETEROGENEOUS CATALYST; PHOSPHORUS OXIDE CATALYSTS; BUTANE SELECTIVE OXIDATION; MALEIC-ANHYDRIDE; SURFACE-ACIDITY; N-BUTANE; VPO CATALYSTS; PYROPHOSPHATE; ALCOHOLS; WATER;

D O I：

10.1039/c3cy20801j

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：

Formaldehyde is an important intermediate in the pharmaceutical, plastic and automobile industries which is produced commercially via methanol oxidation. A series of tungstate promoted vanadium phosphate catalysts were prepared and characterised using a combination of XRD, UV-vis spectrometry, XPS and ammonia TPD. The 25 wt% WO3-VPO catalyst exhibited good activity for the selective gas phase oxidation of methanol with 490% conversion at around 250 degrees C. This is a considerably lower temperature than used in the current industrial process using either silver or iron molybdate catalysts. This increased activity at low temperatures is ascribed to the increase in Bronsted acidity and redox properties of the tungstate doped materials.

引用

页码：1558 / 1564

页数：7

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