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The effect of T-atom ratio and TPAOH concentration on the pore structure and titanium position in MFI-Type titanosilicate during dissolution-recrystallization process
Jiao, Yilai1,2; Adedigba, Abdul-Lateef2,3; Dummer, Nicholas F.2; Liu, Jinmin1; Zhou, Yangtao1; Guan, Yanan1; Shen, Hengyu1; Perdjon, Micheal1; Hutchings, Graham J.2
Corresponding AuthorJiao, Yilai(yljiao@imr.ac.cn) ; Hutchings, Graham J.(hutch@cardiff.ac.uk)
2020-10-01
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
ISSN1387-1811
Volume305Pages:8
AbstractIn this work, titanosilicate MFI (TS-1) crystals with different Si/Ti ratio were treated with tetrapropylamonium hydroxide (TPAOH) solution of different concentrations. The results showed that the properties - crystal structure, titanium position, secondary pore structure and volume - of the treated samples strongly depend on the Si/Ti ratio of the parent TS-1 sample and the TPAOH concentration. For instance, high TPAOH concentration is necessary to induce titanium re-insertion into framework position and to create inter-connected open meso/macropore in TS-1 with low Si/Ti ratio. On the contrary, TPAOH treatment even at high concentration was found to be ineffective in the post-synthesis treatment of low titanium containing TS-1 samples and result in a phase change from orthorhombic to monoclinic. The post-treated high titanium containing and inter-connected secondary pore TS-1 samples exhibited higher activity for cyclohexene epoxidation than the parent TS-1 sample with similar Si/Ti. This technique provides a controlled way of mesopore creation in TS-1 materials, which may be extended to other titanium base microporous materials.
KeywordHollow TS-1 Framework titanium Extra-framework titanium Dissolution Recrystallization process Tetrapropylammonium hydroxide
Funding OrganizationNatural Science Foundation of Liaoning Province ; China Scholarship Council (CSC)
DOI10.1016/j.micromeso.2020.110397
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of Liaoning Province[20180510012] ; China Scholarship Council (CSC)[201604910181]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000551659900068
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139980
Collection中国科学院金属研究所
Corresponding AuthorJiao, Yilai; Hutchings, Graham J.
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Cardiff Univ, Cardiff Catalysis Inst, Sch Chem, Cardiff CF10 3AT, Wales
3.Univ Durham, Dept Chem, Durham DH1 3AT, England
Recommended Citation
GB/T 7714
Jiao, Yilai,Adedigba, Abdul-Lateef,Dummer, Nicholas F.,et al. The effect of T-atom ratio and TPAOH concentration on the pore structure and titanium position in MFI-Type titanosilicate during dissolution-recrystallization process[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2020,305:8.
APA Jiao, Yilai.,Adedigba, Abdul-Lateef.,Dummer, Nicholas F..,Liu, Jinmin.,Zhou, Yangtao.,...&Hutchings, Graham J..(2020).The effect of T-atom ratio and TPAOH concentration on the pore structure and titanium position in MFI-Type titanosilicate during dissolution-recrystallization process.MICROPOROUS AND MESOPOROUS MATERIALS,305,8.
MLA Jiao, Yilai,et al."The effect of T-atom ratio and TPAOH concentration on the pore structure and titanium position in MFI-Type titanosilicate during dissolution-recrystallization process".MICROPOROUS AND MESOPOROUS MATERIALS 305(2020):8.
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