The Influence of Mechanical Activation and the Nature
of a Carrier on the Structural and Diffusion Properties
of Zeolite-Containing Catalysts

L. M. Koval’^a, Yu. I. Goivoronskaya^a, M. N. Potudanskaya^a, G. S. Bozhenkova^a,
and E. A. Paukshtis^b

^a Tomsk State University, Tomsk, 634050 Russia

^b Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences,
pr. Akademika Lavrent’eva 5, Novosibirsk, 630090 Russia

e-mail: koval_lm@mail.ru

Received March 30, 2008

Abstract—The influence of mechanical activation and the nature of a carrier on the structural and diffusion
properties of zeolite-containing catalysts, including the microporous and mesoporous structure of zeolites, was
studied. Zeolite–matrix contacts were found to provide the accessibility of the inside volume of zeolite pores.
In addition, new pores of a larger size appeared. The IR spectra of adsorbed molecules were used to determine
the effective diffusion coefficients of methanol in the porous system of zeolites. It was shown that there was
some optimum zeolite pore radius at which the largest diffusion coefficient was attained.

DOI: 10.1134/S0036024409050100

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