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Inter-connected and open pore hierarchical TS-1 with controlled framework titanium for catalytic cyclohexene epoxidation

文献类型：期刊论文

作者Jiao, Yilai1,2; Adedigba, Abdul-Lateef2; He, Qian2; Miedziak, Peter2; Brett, Gemma2; Dummer, Nicholas F.2; Perdjon, Micheal2; Liu, Jinmin1; Hutchings, Graham J.2
刊名CATALYSIS SCIENCE & TECHNOLOGY
出版日期2018-04-21
卷号8期号:8页码:2211-2217
ISSN号2044-4753
DOI10.1039/c7cy02571h
通讯作者Hutchings, Graham J.(Hutch@cardiff.ac.uk)
英文摘要A post-synthesis method was developed to reduce the extra-framework titanium (Ti) in TS-1 zeolites (Si/Ti ratio = 50), in which tetrapropylamonium hydroxide (TPAOH) aqueous solution was used to promote the dissolution, redistribution and recrystallization processes, and hence to convert amorphous Ti species into zeolitic phases. It was found that TPAOH could effectively convert the extra-framework Ti into framework Ti, and the TPAOH concentration influenced the pore structure significantly. Under lower TPAOH concentration (i.e. 0.05-0.4 M), only closed meso-/macropores (grooves and hollow cavities) can be created in the TS-1 crystals. At an optimum concentration of 0.5 M TPAOH, open and connected hierarchical meso-pores and macropores were created in the resulting TS-1 zeolites. Compared with the parent TS-1, the amount of extra-framework titanium was reduced significantly from 14.4% to 0.3% and the meso-/macropore volume was increased from 0.014 to 0.168 cm(3) g(-1) accordingly upon TPAOH post treatment. Along with the parent TS-1 zeolite, the developed hierarchical TS-1 zeolites were assessed in the catalytic epoxidation of cyclohexene. It was confirmed that the amount of framework titanium and hierarchical pore structure influenced the catalytic activity considerably. Closed porosity slightly improved the cyclohexene conversion, whereas the open-pore sample shows the optimum catalytic activity in cyclohexene conversion.
资助项目China Scholarship Council (CSC)[201604910181]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000433517700021
出版者ROYAL SOC CHEMISTRY
资助机构China Scholarship Council (CSC)
源URL[http://ir.imr.ac.cn/handle/321006/128167]  
专题金属研究所_中国科学院金属研究所
通讯作者Hutchings, Graham J.
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Pk Pl, Cardiff CF10 3AT, S Glam, Wales
推荐引用方式
GB/T 7714		 Jiao, Yilai,Adedigba, Abdul-Lateef,He, Qian,et al. Inter-connected and open pore hierarchical TS-1 with controlled framework titanium for catalytic cyclohexene epoxidation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2018,8(8):2211-2217.
APA Jiao, Yilai.,Adedigba, Abdul-Lateef.,He, Qian.,Miedziak, Peter.,Brett, Gemma.,...&Hutchings, Graham J..(2018).Inter-connected and open pore hierarchical TS-1 with controlled framework titanium for catalytic cyclohexene epoxidation.CATALYSIS SCIENCE & TECHNOLOGY,8(8),2211-2217.
MLA Jiao, Yilai,et al."Inter-connected and open pore hierarchical TS-1 with controlled framework titanium for catalytic cyclohexene epoxidation".CATALYSIS SCIENCE & TECHNOLOGY 8.8(2018):2211-2217.

入库方式： OAI收割

来源：金属研究所

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