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Synthesis of SAPO-34 using metakaolin in the presence of beta-cyclodextrin
Zhang, Chen1,2; Lu, Xuchen1,3; Wang, Tizhuang1
2015-07-01
Source PublicationJOURNAL OF ENERGY CHEMISTRY
ISSN2095-4956
Volume24Issue:4Pages:401-406
Abstract

SAPO-34 molecular sieves were synthesized by the addition of beta-cyclodextrin (beta-CD) as crystal growth inhibitor using metakaolin as silicon and aluminum sources. Properties of the obtained samples were characterized by XRD, SEM, N-2 adsorption-desorption, FTIR, XRF, EDX, NH3-TPD and Si-29 MAS NMR. When beta-CD was added, crystal size of the SAPO-34 crystals decreased. Variation of Si content from the crystal center to surface decreased while total Si content hardly changed. Si-29 MAS NMR results showed that beta-CD contributed to better Si dispersion and decreased the size of Si(4Si) patches. Moreover, the MTO (methanol-to-olefin) process was conducted to investigate the influence of beta-CD on catalytic performance. The synthesized sample with molar ratio of beta-CD/Al2O3 equaling 0.055 remained active for 610 min while the sample synthesized without beta-CD for only 280 min, which indicates that the lifetime of catalyst synthesized with beta-CD is greatly prolonged. (C) 2015 Science Press and Dalian Institute of Chemical Physics. All rights reserved.

KeywordSapo-34 Metakaolin Beta-cyclodextrin Acidity Mto Process
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jechem.2015.06.008
Indexed BySCI
Language英语
WOS KeywordLIGHT OLEFINS ; MOLECULAR-SIEVES ; MTO REACTION ; HYDROTHERMAL SYNTHESIS ; CATALYTIC-ACTIVITY ; CONVERSION ; METHANOL ; TEMPLATES ; LIFETIME ; NANOCRYSTALS
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000361017200005
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19544
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.United Res Ctr Resource & Mat, Wuhai 016000, Inner Mongolia, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chen,Lu, Xuchen,Wang, Tizhuang. Synthesis of SAPO-34 using metakaolin in the presence of beta-cyclodextrin[J]. JOURNAL OF ENERGY CHEMISTRY,2015,24(4):401-406.
APA Zhang, Chen,Lu, Xuchen,&Wang, Tizhuang.(2015).Synthesis of SAPO-34 using metakaolin in the presence of beta-cyclodextrin.JOURNAL OF ENERGY CHEMISTRY,24(4),401-406.
MLA Zhang, Chen,et al."Synthesis of SAPO-34 using metakaolin in the presence of beta-cyclodextrin".JOURNAL OF ENERGY CHEMISTRY 24.4(2015):401-406.
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