Deactivation of Zeolite–Containing Catalysts of Nonoxidative Conversion of Methane
V. V. Kozlov1, L. L. Korobitsyna1, A. V. Vosmerikov1 and V. I. Zaikovsky2
1Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 4, Tomsk 634021 (Russia)
2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
Keywords: zeolite of ZSM–5 type, nanosized metal powders, methane, converison, dehydroaromatization, coke
Abstract
Deactivation of tungsten-containing zeolite at different stages of nonoxidative conversion of methane into aromaic hydrocabrons was studied. The factors causing a decrease in the activity of the catalyst were revealed. The distribution and state of the active components in the catalytic system were studied. The nature of carbon deposits formed during the reaction on the catalyst under investigation was studied, and the amount of the deoposits was determined.
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