The surface of iron molybdate catalysts used for the selective oxidation of methanol

被引：36

作者：

Yeo, Benjamin R. ^{[1
]}

Pudge, Geoffrey J. F. ^{[1
]}

Bugler, Keith G. ^{[1
]}

Rushby, Alice V. ^{[1
]}

Kondrat, Simon ^{[1
]}

Bartley, Jonathan ^{[1
]}

Golunski, Stanislaw ^{[1
]}

Taylor, Stuart H. ^{[1
]}

Gibson, Emma ^{[2
]}

Wells, Peter. P. ^{[2
]}

Brookes, Catherine ^{[1
,2
]}

Bowker, Michael ^{[1
,2
]}

Hutchings, Graham J. ^{[1
]}

机构：

[1] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales

[2] UK Catalysis Hub, Rutherford Appleton Lab, Res Complex Harwell RCaH, Harwell OX11 0FA, Oxon, England

来源：

SURFACE SCIENCE | 2016年 / 648卷

基金：

英国工程与自然科学研究理事会;

关键词：

Methanol oxidation; Formaldehyde synthesis; Iron molybdate; Catalyst surface; Catalyst preparation; FORMALDEHYDE OXIDATION; DEACTIVATION; DEHYDROGENATION; OXIDE; PHASE; MOO3;

D O I：

10.1016/j.susc.2015.11.010

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：

The oxidation of methanol to formaldehyde is a major chemical process carried out catalytically and iron molybdate is one of the major catalysts for this process. In this paper we explore the nature of the active and selective surfaces of iron molybdate catalysts and show that the effective catalysts comprise molybdenum rich surfaces. We conclude that it is therefore important to maximise the surface area of these active catalysts and to this end we have studied catalysts made using a new physical grinding method with oxalic acid. For super-stoichiometric materials (Fe:Mo = 1:2.2) the reaction data show that physical mixing produces effective catalysts, possibly offering an improvement over the conventional co-precipitation method. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：163 / 169

页数：7

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