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题名: Synthesis of hierarchical MeAPO-5 molecular sieves - Catalysts for the oxidation of hydrocarbons with efficient mass transport
作者: Zhou, Lipeng1;  Lu, Tianliang1;  Xu, Jiaolong1;  Chen, Minzhu1;  Zhang, Chaofeng1;  Chen, Chen2;  Yang, Xiaomei1;  Xu, Jie2
关键词: Aluminophosphate molecular sieves ;  Hierarchical zeolites ;  Aerobic oxidation ;  Hydrocarbons
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2012-10-01
DOI: 10.1016/j.micromeso.2012.04.058
卷: 161, 页:76-83
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: Hierarchical molecular sieves possess the characters of both microporous molecular sieves and mesoand/or macro-porous materials, and have potential application in adsorption and separation of macromolecules and diffusion limited catalytic reactions. In this work, hierarchical MeAPO-5 (MeAPO-5-meso, Me = Co, Mn, Fe, Mg and Ti) molecular sieves were synthesized directly using glucose as mesopore template. The synthesized MeAPO-5-meso molecular sieves were characterized by X-ray diffraction, X-ray fluorescence, N-2 physisorption, thermogravimetric analysis and scanning electron microscopy. It was proved that mesopores with the pore size distribution of 5-30 nm were introduced to MeAPO-5-meso. The improvement effect of the introduced mesopores on the catalytic performance of MeAPO-5-meso (Me = Mn, Fe and Co) was investigated in the oxidation of various hydrocarbons with different molecular dimensions including cyclohexene, ethylbenzene, indan, tetralin, diphenylenemethane and fluorene. For comparison, these oxidation reactions were also performed over the ordinary MeAPO-5. The results indicated that mesopores benefited the diffusion of the reactants and the products, so the conversion of the reactants was improved while the selectivity of the products was slightly improved or maintained at higher conversion. In addition, the promotion effect is dependent on the dimension of the substrates with respect to the micropore size of molecular sieves. (C) 2012 Elsevier Inc. All rights reserved.
关键词[WOS]: ZEOLITE SINGLE-CRYSTALS ;  TRANSITION-METAL IONS ;  SELECTIVE OXIDATION ;  MESOPOROUS ZEOLITE ;  ALUMINOPHOSPHATE ;  CYCLOHEXANE ;  CARBON ;  HYDROISOMERIZATION ;  DECOMPOSITION ;  CONVERSION
语种: 英语
WOS记录号: WOS:000307085900010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138024
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.Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China
2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhou, Lipeng,Lu, Tianliang,Xu, Jiaolong,et al. Synthesis of hierarchical MeAPO-5 molecular sieves - Catalysts for the oxidation of hydrocarbons with efficient mass transport[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2012,161:76-83.
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