Selective methane bromination over sulfated zirconia in SBA-15 catalysts

Methane activation via bromination can be a feasible route with selective synthesis of mono-bromomethane. It is known that the condensation of brominated products into higher hydrocarbons can result in coking and deactivation in the presence of di-bromomethane. In this study, selective production of...

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Bibliographic Details
Published in:Catalysis today 2009-04, Vol.142 (1), p.30-33
Main Authors: Degirmenci, Volkan, Yilmaz, Aysen, Uner, Deniz
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Mesoporous silica
Methane activation
Porous materials
SBA-15
Sulfated zirconia
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Methane activation via bromination can be a feasible route with selective synthesis of mono-bromomethane. It is known that the condensation of brominated products into higher hydrocarbons can result in coking and deactivation in the presence of di-bromomethane. In this study, selective production of methyl bromide was investigated over sulfated ZrO 2 included SBA-15 structures. It was observed that the higher the ZrO 2 amounts the higher the conversion, while the catalyst remained >99% selective for the monobrominated methane. Over 25 mol.% ZrO 2 included SBA-15 catalyst with a BET surface area of 246 m 2/g, methane was brominated with 69% conversion at 340 °C and only CH 3Br was selectively produced.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2009.01.011