Yoo, KS Smirniotis, PG 2024-01-21T04:11:58Z 2024-01-21T04:11:58Z 2021-09-03 2005-10 1011-372X https://pubs.kist.re.kr/handle/201004/136087 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 Bronsted acid sites. It can prohibit the formation of heavy carbonaceous materials that deactivate the zeolites. English SPRINGER TEMPERATURE-PROGRAMMED DESORPTION BETA-ZEOLITES ULTRASTABLE Y H-FAU DEACTIVATION SPECTROSCOPY SELECTIVITY ZSM-12 EMT Zeolites-catalyzed alkylation of isobutane with 2-butene: Influence of acidic properties Article 10.1007/s10562-005-7161-7 1 CATALYSIS LETTERS, v.103, no.3-4, pp.249 - 255 CATALYSIS LETTERS 103 3-4 249 255 scie scopus 000232030200013 2-s2.0-25444484098 Chemistry, Physical Chemistry Article TEMPERATURE-PROGRAMMED DESORPTION BETA-ZEOLITES ULTRASTABLE Y H-FAU DEACTIVATION SPECTROSCOPY SELECTIVITY ZSM-12 EMT alkylation USY zeolite hydrogen transfer Bronsted acid sites