Conversion of isobutane-butenes mixtures on H-USY and SO (4) (2-)/ZrO2 catalysts under supercritical conditions: Isobutane alkylation and butenes oligomerizationстатья
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Дата последнего поиска статьи во внешних источниках: 29 ноября 2015 г.
Аннотация:The conversion of isobutane-butenes mixtures on the H-form of ultrastable zeolite Y and sulfated zirconia under supercritical conditions at 150-160A degrees C and 80 atm was studied. The isobutane/C-4-olefins molar ratios (I/O) were 1.5, 14, and 28. In isobutane alkylation (I/O = 14 and 28), sulfated zirconia was more stable: at 150A degrees C and 80 atm, the olefin conversion above 90% was retained for 5 h. Under the same conditions, the deactivation of the zeolite catalyst started after 1-2.5 h (depending on the initial I/O ratio). Selectivity for the formation of C-8 hydrocarbons was 30-40%. An increase in the butene content of the initial mixture led to the domination of the dimerization of butenes over the alkylation of isobutane.