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Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure
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
2017-10-29
DOI10.1016/j.micromeso.2017.07.046
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
关键词[WOS]EXTRA-FRAMEWORK ALUMINUM ; CATALYTIC CRACKING ; AMMONIUM HEXAFLUOROSILICATE ; HIGH-PERFORMANCE ; USY ZEOLITES ; MFI ZEOLITES ; DESILICATION ; STRATEGIES ; REACTIVITY ; MORDENITE
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.
语种英语
WOS记录号WOS:000414819400028
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149750
专题中国科学院大连化学物理研究所
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
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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.
APA Li, Cheng.,Guo, Linlin.,Liu, Peng.,Gong, Ke.,Jin, Wenlong.,...&Shen, Baojian.(2017).Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure.MICROPOROUS AND MESOPOROUS MATERIALS,255,242-252.
MLA Li, Cheng,et al."Defects in AHFS-dealuminated Y zeolite: A crucial factor for mesopores formation in the following base treatment procedure".MICROPOROUS AND MESOPOROUS MATERIALS 255(2017):242-252.
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