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On the synthesis and catalytic cracking properties of Al-ITQ-13 zeolites

摘要:Al-ITQ-13 zeolites with different Si/A1 atom ratios above 25 were successfully synthesized in short crystallization time by using seeds in the gel. A variety of synthesis conditions were investigated in-depth and the resultant zeolite samples were characterized by XRD, SEM, N-2 physisorption and FTIR spectra. Al-TQ-13 zeolite samples synthesized with different Si/AI ratios exhibit similar textural properties. The amount and strength of acid sites decrease with increasing Si/Al ratio of Al-ITQ-13 zeolites. It was found that H-Al-ITQ-13 samples with low Si/A1 ratios show a very high B/L ratio (such as 2.40) at a desorption temperature of 573 K. 1-Butene cracking reaction over proton form Al-ITQ-13 zeolites (Si/Al atom ratio from 47 to 179) was carried out in a continuous flow stainless steel reactor. It was found that the higher of the aluminium content in Al-ITQ-13 (i.e. lower Si/Al ratio), the better selectivity for ethylene and propylene yield. While the hydrogen transfer reaction and alkylation reaction were suppressed with increasing Si/A1 ratio. (C) 2017 Elsevier Inc. All rights reserved.

关键字:Zeolite Al-ITQ-13 Si/Al ratio Synthesis 1-Butene catalytic cracking

ISSN号:1387-1811

卷、期、页:卷: 246 页: 186-192

发表日期:2017-07-01

期刊分区(SCI为中科院分区):二区

收录情况:SCI(科学引文索引印刷版),ESI(基本科学指标数据库),EI(工程索引),SCIE(科学引文索引网络版)

发表期刊名称:MICROPOROUS AND MESOPOROUS MATERIALS

通讯作者:郭小忠,王艳丹

第一作者:曾鹏晖,朱小春,郭巧霞,任申勇,申宝剑

论文类型:期刊论文

论文概要:曾鹏晖,郭小忠,朱小春,郭巧霞,王艳丹,任申勇,申宝剑,On the synthesis and catalytic cracking properties of Al-ITQ-13 zeolites,MICROPOROUS AND MESOPOROUS MATERIALS,2017,卷: 246 页: 186-192

论文题目:On the synthesis and catalytic cracking properties of Al-ITQ-13 zeolites

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