Platinum Catalysts Based on Zeolites and Modified Aluminium Oxide in the Joint Hydroisomerization of Heptane and Benzene
E. D. FEDOROVA, M. O. KAZAKOV, E. A. BULUCHEVSKY, A. V. LAVRENOV
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:134:"Institute of Hydrocarbons Processing, Siberian Branch of the Russian Academy of Sciences, Ul. Neftezаvodskаya 54, Omsk 644040 (Russia)";}
Keywords: бензол, гидроизомеризация, анион-модифицированный оксид алюминия, цеолиты, benzene, hydroisomerization, anion-modified aluminium oxide, zeolites
Abstract
Results of the tests of platinum-containing catalysts on supports <>-ZrO2-Al2O3, B2O3-Al2O3 and WO3-Al2O3, as well Y-type, beta and mordenite zeolites mixed with aluminium oxide, within temperature range 200-375 °C are presented. It is shown that zeolite-containing catalysts ensure the maximal yield of methylcyclopentane - at a level of 14 mass % at a temperature of 275-300 °C. At higher temperature, the contribution from side reactions of cycle opening and hydrocracking increases on zeolite catalysts. Among anion-modified systems, the highest selectivity is demonstrated by the sample Pt/WO3-Al2O3: the maximal yield of target methylcyclopentane and isoheptanes in the product mixture is 16.2 and 57 mass %, respectively. Almost complete benzene removal is provided, and the degree of heptane transformation is 80.6 %.
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