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学科主题: 物理化学
题名: Multimodal Zr-Silicalite-1 zeolite nanocrystal aggregates with interconnected hierarchically micro-meso-macroporous architecture and enhanced mass transport property
作者: Chen, Li-Hua2, 3;  Xu, Shu-Tao1;  Li, Xiao-Yun3;  Tian, Ge3;  Li, Yu2;  Rooke, Joanna Claire3;  Zhu, Guang-Shan4;  Qiu, Shi-Lun4;  Wei, Ying-Xu1;  Yang, Xiao-Yu2, 3;  Liu, Zhong-Min1;  Su, Bao-Lian2, 3
通讯作者: 刘中民 ;  BaoLianSu
关键词: Hierarchically porous zeolites ;  Micro-meso-macroporous ;  Quasi-solid-state system ;  Structure directed crystallization ;  Strong acidity
刊名: JOURNAL OF COLLOID AND INTERFACE SCIENCE
发表日期: 2012-07-01
DOI: 10.1016/j.jcis.2012.03.018
卷: 377, 期:1, 页:368-374
收录类别: SCI
文章类型: Article
部门归属: DNL12
项目归属: 1201
产权排名: 4,2
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Hierarchical porous architecture with interconnected trimodal micro-meso-macroporous systems constructed from uniform zeolite Zr-doped silicalite-1 nanocrystals has been prepared. The synthesis has been made by using glycerin as a reaction medium via a quasi-solid-state crystallization of hierarchically meso-macroporous zirconosilicate precursor under the effect of the structure directing agent TPAOH. The presence of glycerin is crucial in the synthesis systems to maintain the porous hierarchy. The pores inter-connectivity, Zr location in the framework, the acidity and the catalytic activity have been studied by laser-hyperpolarized Xe-129 NMR spectroscopy, UV-visible spectroscopy, temperature-programmed desorption of ammonia and the catalytic isopropylbenzene cracking probe reaction, respectively. The products possess well-defined macrochannels interconnected with mesopores located in the macropore walls, which in turn have been constructed from microporous MFI-type zeolite units. Xe-129 NMR study indicated that the hierarchically micro-, meso-, macro-pore systems are homogeneously distributed throughout the final materials and well interconnected, which is important for molecular diffusion. The TPD-NH3 investigation revealed that the hierarchically micro-meso-macroporous materials constructed from zeolite Zr-Silicalite-1 nanocrystals present strong acidity. (C) 2012 Elsevier Inc. All rights reserved.
关键词[WOS]: CATALYTIC PERFORMANCE ;  POROUS STRUCTURES ;  ZSM-5 ZEOLITE ;  NMR ;  SELECTIVITY ;  MESOPORES ;  CRYSTALS ;  SBA-15 ;  XENON ;  BETA
语种: 英语
WOS记录号: WOS:000304432400050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117985
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.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Beijing 100864, Peoples R China
2.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
3.Univ Namur FUNDP, Lab Inorgan Mat Chem CMI, B-5000 Namur, Belgium
4.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China

Recommended Citation:
Chen, Li-Hua,Xu, Shu-Tao,Li, Xiao-Yun,et al. Multimodal Zr-Silicalite-1 zeolite nanocrystal aggregates with interconnected hierarchically micro-meso-macroporous architecture and enhanced mass transport property[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2012,377(1):368-374.
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