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题名: Characterization of metal-containing molecular sieves and their catalytic properties in the selective oxidation of cyclohexane
作者: Tian, P;  Liu, ZM;  Wu, ZB;  Xu, L;  He, YL
关键词: metal-containing molecular sieve ;  microporous aluminophosphate ;  characterization ;  cyclohexane ;  oxidation
刊名: CATALYSIS TODAY
发表日期: 2004-09-01
DOI: 10.1016/j.cattod.2004.06.100
卷: 93-5, 期:93—95, 页:735-742
收录类别: ISTP ;  SCI
文章类型: Article
项目归属: 803
产权排名: 1;1
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: Three types of metal-containing molecular sieves with AFI, AEL and CHA structures (Me = Co, Mn, Cr and V) were synthesized hydrothermally and characterized by XRD, XRF, TG, TPR, NH3-TPD and FT-IR. It was revealed that metals were incorporated into the framework of molecular sieves and induced the presence of charge centers. Both cobalt and manganese in the framework of AIPO-5, AlPO-11 and SAPO-34 were not reducible before the structure collapse. The redox behaviours of these catalysts in cyclohexane oxidation at 403 K using O-2 as oxidant were examined. CoAPO-11 exhibited best activity and good selectivities for the monofunctional oxidation products (88.5%). Cyclohexanol was the major product over most catalysts, whereas for Cr-containing molecular sieves, high selectivity of cyclohexanone was observed. Investigation of reaction mechanism based on CoAPO-11 and CrAPO-5 catalysts indicated that the decomposition of cyclohexyl hydroperoxide (CHHP), the intermediate in cyclohexane oxidation, followed the pathway: cyclohexanone <-- CHHP --> cyclohexanol -->cyclohexanone. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: LIQUID-PHASE OXIDATION ;  ADIPIC ACID ;  COBALT ;  ALUMINOPHOSPHATE ;  HYDROCARBONS ;  ENVIRONMENTS ;  COAPO-5 ;  CENTERS ;  IONS ;  AIR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000223973200106
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81817
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 Inst Chem Phys, Nat Gas Utilizat Catalysis Lab, Dalian 116023, Peoples R China

Recommended Citation:
Tian, P,Liu, ZM,Wu, ZB,et al. Characterization of metal-containing molecular sieves and their catalytic properties in the selective oxidation of cyclohexane[J]. CATALYSIS TODAY,2004,93-5(93—95):735-742.
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