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

SURFACE SCIENCE

卷:648

Article

Yeo, Benjamin R.¹  Pudge, Geoffrey J. F.¹  Bugler, Keith G.¹  Rushby, Alice V.¹  Kondrat, Simon¹  Bartley, Jonathan¹  Golunski, Stanislaw¹  Taylor, Stuart H.¹  Gibson, Emma²  Wells, Peter. P.²  Brookes, Catherine^1,2  Bowker, Michael^1,2  Hutchings, Graham J.¹ 

[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

关键词: Methanol oxidation;    Formaldehyde synthesis;    Iron molybdate;    Catalyst surface;    Catalyst preparation;   

DOI  :  10.1016/j.susc.2015.11.010

来源: Elsevier

【 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.

【 授权许可】

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