摘要：Mesoporous zeolites have gained a great interest because of their improved performance in catalyzed reactions compared with conventional microporous zeolites. Herein, we would like to report a strategy containing sequential ammonium hexafluorosilicate (AHFS) and base treatment to prepare mesoporous Y zeolite. The obtained mesoporous Y zeolite possessed high total pore volume (0.720 cm³g⁻¹) and mesopore volume (0.453 cm³g⁻¹). Furthermore, the goal of well interconnectivity among different pores has also been achieved. It has been found that AHFS treatment played a crucial role in the formation of mesopores during the following base treatment procedure. Si-rich areas, which were full of defects, formed after AHFS treatment. These areas were unstable and easy to remove from the zeolite framework in base solution to generate mesopores. Meanwhile, the defects provided paths for base treatment and made it more effective. The combined treatment achieved a goal of inducing mesopores formation by defects. Catalytic performance of the zeolites were evaluated by cracking of 1,3,5-triisopropylbenzene (TIPB). The result showed that catalytic activity was closely related to the upgraded mesoporosity system of the zeolites.
© 2017 Elsevier Inc.

ISSN号：1387-1811

卷、期、页：v 255,p242-252

发表日期：2018-01-01

影响因子：3.615000

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

参与作者：龚克,刘宪春

通讯作者：李程,郭琳琳,刘鹏,金文龙,李磊

第一作者：朱小春,申宝剑

论文类型：期刊论文

论文概要：李程,郭琳琳,刘鹏,龚克,金文龙,李磊,朱小春,刘宪春,申宝剑，Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure，Microporous and Mesoporous Materials，2018，v 255,p242-252

论文题目：Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure