Transformation pathways of 2,2-dimethyloxirane on aluminosilicates: The effects of catalyst structure and reaction conditions

Fási, András and Pálinkó, István and Gömöry, Ágnes and Kiricsi, Imre (2004) Transformation pathways of 2,2-dimethyloxirane on aluminosilicates: The effects of catalyst structure and reaction conditions. STUDIES IN SURFACE SCIENCE AND CATALYSIS, 154. pp. 2711-2716. ISSN 0167-2991

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Abstract

The ring transformation reactions of 2,2-dimethyloxirane were studied over various aluminosilicates (HZSM-5, CuZSM-5, HY, AIMCM-41 or NaNa-loaded A1MCM-41) in a pulse reactor at 423 K. The main reactions identified were isomerisation and cyclic dimerisation. The product formation selectivities could be tuned by varying the pore size of the molecular sieves and/or altering the reaction parameters. Large pore size and mild conditions favoured isomerisation, while an optimally constrained environment and overloading the catalyst with the epoxide (increased pulse size) was advantageous for cyclic dimerisation.

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