The effect of T-atom ratio and TPAOH concentration on the pore structure and titanium position in MFI-Type titanosilicate during dissolution-recrystallization process

doi:10.1016/j.micromeso.2020.110397

IMR OpenIR

	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, Yilai 1,2; Adedigba, Abdul-Lateef 2,3; Dummer, Nicholas F.2; Liu, Jinmin 1; Zhou, Yangtao 1; Guan, Yanan 1; Shen, Hengyu 1; Perdjon, Micheal 1; Hutchings, Graham J.2
通讯作者	Jiao, Yilai(yljiao@imr.ac.cn) ; Hutchings, Graham J.(hutch@cardiff.ac.uk)
	2020-10-01
发表期刊	MICROPOROUS AND MESOPOROUS MATERIALS
ISSN	1387-1811
卷号	305 页码:8
摘要	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.
关键词	Hollow TS-1 Framework titanium Extra-framework titanium Dissolution Recrystallization process Tetrapropylammonium hydroxide
资助者	Natural Science Foundation of Liaoning Province ; China Scholarship Council (CSC)
DOI	10.1016/j.micromeso.2020.110397
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Liaoning Province[20180510012] ; China Scholarship Council (CSC)[201604910181]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000551659900068
出版者	ELSEVIER
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/139980
专题	中国科学院金属研究所
通讯作者	Jiao, Yilai; Hutchings, Graham J.
作者单位	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
推荐引用方式 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.