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题名: Synthesis and characterization of Al-MSU-S mesoporous and meso-microporous molecular sieves and their catalytic performance
作者: Zhu, JH;  Liu, J;  Zhao, WJ;  Wang, XS;  Liu, XM;  Bao, XH
关键词: Al-MSU-S molecular sieve ;  protozeolitic nanocluster ;  dilsopropylbenzene ;  cracking reaction ;  benzene ;  hexane
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2004-09-01
卷: 25, 期:9, 页:741-747
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 ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Al-MSU-S mesoporous molecular sieve (Al-MSU-S(me)) with high hydrothermal stability and acidity was reported recently. In this work, the Al-MSU-S(me) and the Al-NISU-S meso-microporous molecular sieve (Al-NISU-S(me-mi)) were prepared by the assembly of protozeotitic nanoclusters. When the Al content in Al-MSU-S was 2.5 % similar to 20 % and 25 % similar to 33.3 % respectively, the corresponding hexagonal mesoporous and meso-microporous structure was obtained. Three IR vibrational bands were observed in the range of 560 - 690 cm(-1), being comparable to microporous faujusite. The tetrahedral coordinated aluminum was found in all the Al-MSU-S molecular sieves, indicating that all the aluminum had entered Al-MSU-S framework. Both Al-MSU-S(me) and Al-MSU-S(me-mi) possessed medium and stronger acid sites. The acid amount of Al-MSU-S(me) increased as Al content decreased, and the acid amount of Al-MSU-S(me-mi) was much more than that of Al-MSU-S(me), and the acid strength of Al-MSU-S(me-mi) was much stronger than that of Al-MSUS(me). The catalytic activity of Al-MSU-S in H+ form was measured by diisopropylbenzene(DIPB) cracking reaction at different temperatures and pressure. Under the pressure of 0.1. MPa the Al-MSU-S ( me-mi) had higher activity than the Al-MSU-S(me), while the catalytic activity of Al-NISU-S(me) increased steadily as Al content decreased.
关键词[WOS]: ORDERED HEXAGONAL STRUCTURE ;  ALUMINOSILICATES ;  MESOSTRUCTURES ;  COMPOSITES ;  SEEDS
语种: 英语
WOS记录号: WOS:000224401400015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138457
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.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catal, Dalian 116023, Peoples R China

Recommended Citation:
Zhu, JH,Liu, J,Zhao, WJ,et al. Synthesis and characterization of Al-MSU-S mesoporous and meso-microporous molecular sieves and their catalytic performance[J]. CHINESE JOURNAL OF CATALYSIS,2004,25(9):741-747.
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