Author： Yoo Kye Smirniotis Panagiotis
Publisher： Springer Publishing Company
ISSN： 1011-372X
Source： Catalysis Letters, Vol.103, Iss.3-4, 2005-10, pp. : 249-255
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Abstract
The influence of acidity properties of zeolites on the alkylation of isobutane with 2-butene was studied using ultrastable Y (USY) zeolites. Most zeolites possessed almost comparable hydrogen transfer activity except for USY-30, which has the lowest acid site density. On the other hand, the strength of acid sites increased with degrees of dealumination. During the alkylation, a maximum in catalytic activity for certain Si/Al ratios were observed. This behavior is believed to be a result of a balanced level of acidic properties between the concentration and strength of Brønsted acid sites. It can prohibit the formation of heavy carbonaceous materials that deactivate the zeolites.
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