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题名: Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure
作者: Li, Cheng1;  Guo, Linlin1;  Liu, Peng1;  Gong, Ke2;  Jin, Wenlong1;  Li, Lei1;  Zhu, Xiaochun1;  Liu, Xianchun2;  Shen, Baojian1
关键词: Mesoporous Y zeolite ;  AHFS treatment ;  Base treatment ;  Defects ;  Catalytic cracking
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2017-10-29
DOI: 10.1016/j.micromeso.2017.07.046
卷: 255, 页:242-252
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: 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 cm(3) g(-1)) and mesopore volume (0.453 cm(3) g(-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. (C) 2017 Elsevier Inc. All rights reserved.
关键词[WOS]: EXTRA-FRAMEWORK ALUMINUM ;  CATALYTIC CRACKING ;  AMMONIUM HEXAFLUOROSILICATE ;  HIGH-PERFORMANCE ;  USY ZEOLITES ;  MFI ZEOLITES ;  DESILICATION ;  STRATEGIES ;  REACTIVITY ;  MORDENITE
语种: 英语
WOS记录号: WOS:000414819400028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149687
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.China Univ Petr, Coll Chem Engn, Key Lab Catalysis CNPC, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, Cheng,Guo, Linlin,Liu, Peng,et al. Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2017,255:242-252.
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