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题名: Catalytically active and hierarchically porous SAPO-11 zeolite synthesized in the presence of polyhexamethylene biguanidine
作者: Liu, Yan1, 4;  Qu, Wei2;  Chang, Weiwei1;  Pan, Shuxiang1;  Tian, Zhijian2;  Meng, Xiangju1;  Rigutto, Marcello3;  van der Made, Alexander3;  Zhao, Lan5;  Zheng, Xiaoming1;  Xiao, Feng-Shou1
关键词: Hierarchical zeolite ;  SAPO-11 ;  Supported platinum catalyst ;  Hydroisomerization ;  n-Dodecane
刊名: JOURNAL OF COLLOID AND INTERFACE SCIENCE
发表日期: 2014-03-15
DOI: 10.1016/j.jcis.2013.11.065
卷: 418, 页:193-199
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Hierarchically porous SAPO-11 zeolite (H-SAPO-11) is rationally synthesized from a starting silicoaluminophosphate gel in the presence of polyhexamethylene biguanidine as a mesoscale template. The sample is well characterized by XRD, N-2 sorption, SEM, TEM, NMR, XPS, NH3-TPD, and TG techniques. The results show that the sample obtained has good crystallinity, hierarchical porosity (mesopores at ca. 10 nm and macropores at ca. 50-200 nm), high BET surface area (226 m(2)/g), large pore volume (0.25 cm(3)/g), and abundant medium and strong acidic sites (0.36 mmol/g). After loading Pt (0.5 wt.%) on H-SAPO-11 by using wet impregnation method, catalytic hydroisomerization tests of n-dodecane show that the hierarchical Pt/SAPO-11 zeolite exhibits high conversion of n-dodecane and enhanced selectivity for branched products as well as reduced selectivity for cracking products, compared with conventional Pt/SAPO-11 zeolite. This phenomenon is reasonably attributed to the presence of hierarchical porosity, which is favorable for access of reactants on catalytically active sites. The improvement in catalytic performance in long-chain paraffin hydroisomerization over Pt/SAPO-11-based catalyst is of great importance for its industrial applications in the future. (C) 2013 Elsevier Inc. All rights reserved.
关键词[WOS]: SILICOALUMINOPHOSPHATE MOLECULAR-SIEVES ;  SOLID-STATE NMR ;  CHAIN NORMAL-PARAFFINS ;  MTO-REACTION ;  INTRACRYSTAL MESOPORES ;  TEMPLATED SYNTHESIS ;  DIRECTED SYNTHESIS ;  SHAPE SELECTIVITY ;  MFI ZEOLITE ;  HYDROISOMERIZATION
语种: 英语
WOS记录号: WOS:000330748700025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143173
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.Zhejiang Univ, Dept Chem, Key Lab Appl Chem Zhejiang Prov, Hangzhou 310028, Zhejiang, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Shell Technol Ctr Amsterdam, NL-1031 HW Amsterdam, Netherlands
4.E China Inst Technol, Dept Chem Engn & Technol, Nanchang 330013, Peoples R China
5.King Abdullah Univ Sci & Technol, Adv Membranes & Porous Mat Ctr, Chem & Life Sci & Engn Div, Thuwal 29556900, Saudi Arabia

Recommended Citation:
Liu, Yan,Qu, Wei,Chang, Weiwei,et al. Catalytically active and hierarchically porous SAPO-11 zeolite synthesized in the presence of polyhexamethylene biguanidine[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2014,418:193-199.
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