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Catalytic cracking of 1, 3, 5-triisopropylbenzene over silicoaluminophosphate with hierarchical pore structure
Qi, Jian1,2; Jin, Quan1; Zhao, Kun3; Zhao, Tianbo2
2015-08-01
Source PublicationJOURNAL OF POROUS MATERIALS
ISSN1380-2224
Volume22Issue:4Pages:1021-1032
AbstractIn order to prepare a highly active catalyst for the catalytic cracking of larger molecules, a novel micro-mesoporous silicoaluminophosphate composite (define as mesoporous SAPO-5) with hierarchical tri-modal pore size distributions has been firstly synthesized via post-synthetic method in acidic condition and subsequently characterized. Morphology control of the composite is attempted by adjusting pH value of the synthetic system. Three different morphologies of composite, including sphere-, rod- and net-like, are obtained in the different conditions. Possible mechanism for the formation of mesoporous SAPO-5 has been proposed. The mesoporous SAPO-5 exhibits higher cracking activity than conventional microporous SAPO-5 for cracking of 1, 3, 5-triisopropylbenzene (1, 3, 5-TIPB) under the same reaction conditions. The result indicates that the mesoporous SAPO-5 with hierarchical pore structure is favorable for catalytic cracking of large molecule. When the cumene as the reaction molecule, the microporous SAPO-5 catalyst exhibits higher conversion in catalytic cracking of cumene compared to the mesoporous SAPO-5, and the result may be attributed to that microporous SAPO-5 has much stronger acidity and specific selectivity than mesoporous SAPO-5 catalyst in catalytic cracking of cumene. Meanwhile, corresponding carbenium ion mechanism can account for the products formed during the whole reaction process.
KeywordCatalytic Cracking Hierarchical Pore Structure Silicoaluminophosphate
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1007/s10934-015-9976-y
Indexed BySCI
Language英语
WOS KeywordMOLECULAR-SIEVES ; MESOPOROUS SAPO-34 ; FACILE SYNTHESIS ; MICRO ; ZEOLITES ; PERFORMANCE ; PRECURSORS ; CONVERSION ; MECHANISM ; DIFFUSION
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000357049300020
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19325
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Beijing Inst Technol, Inst Chem Phys, Beijing 100081, Peoples R China
3.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Dept Phys Chem, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Qi, Jian,Jin, Quan,Zhao, Kun,et al. Catalytic cracking of 1, 3, 5-triisopropylbenzene over silicoaluminophosphate with hierarchical pore structure[J]. JOURNAL OF POROUS MATERIALS,2015,22(4):1021-1032.
APA Qi, Jian,Jin, Quan,Zhao, Kun,&Zhao, Tianbo.(2015).Catalytic cracking of 1, 3, 5-triisopropylbenzene over silicoaluminophosphate with hierarchical pore structure.JOURNAL OF POROUS MATERIALS,22(4),1021-1032.
MLA Qi, Jian,et al."Catalytic cracking of 1, 3, 5-triisopropylbenzene over silicoaluminophosphate with hierarchical pore structure".JOURNAL OF POROUS MATERIALS 22.4(2015):1021-1032.
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