| 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 Author | Jiao, Yilai(yljiao@imr.ac.cn) ; Hutchings, Graham J.(hutch@cardiff.ac.uk) |
| 2020-10-01 | |
| Source Publication | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| ISSN | 1387-1811 |
| Volume | 305Pages:8 |
| Abstract | In 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. |
| Keyword | Hollow TS-1 Framework titanium Extra-framework titanium Dissolution Recrystallization process Tetrapropylammonium hydroxide |
| Funding Organization | Natural Science Foundation of Liaoning Province ; China Scholarship Council (CSC) |
| DOI | 10.1016/j.micromeso.2020.110397 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of Liaoning Province[20180510012] ; China Scholarship Council (CSC)[201604910181] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000551659900068 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139983 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiao, Yilai; Hutchings, Graham J. |
| Affiliation | 1.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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