Hydrophilicity/hydrophobicity modulated synthesis of nano-crystalline and hierarchically structured TS-1 zeolites

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 高性能陶瓷和超微结构国家重点实验室 > 期刊论文

	Hydrophilicity/hydrophobicity modulated synthesis of nano-crystalline and hierarchically structured TS-1 zeolites
	Ge, Tongguang 1,2; Hua, Zile 1; Lv, Jian 1; Zhou, Jinling 1; Guo, Hangle 1; Zhouc, Jian 3; Shi, Jianlin 1
刊名	CRYSTENGCOMM
	2017-03-14
卷号	19 期号:10 页码:1370-1376
英文摘要	Nanosized crystals and hierarchically structured materials are considered to be two important options to enhance the mass transportation efficiency in microporous zeolites. Herein, we first present a highly efficient gel-crystallization approach for the synthesis of TS-1 nanocrystals with an exceptionally high mass yield of up to 97.4% and a volume yield of similar to 0.36 g ml(-1). The resultant TS-1 nanozeolites (un-TS-1) possess uniform and tunable particle sizes from 80 nm to 2.0 mu m. Compared to the TS-1 counterparts (ht-TS-1) synthesized by a direct hydrothermal method, the obtained un-TS-1 materials showed comparable or improved catalytic performance for epoxidation of 1-hexene and hydroxylation of phenol with dilute H2O2 as the oxidant. More importantly, a surface-hydrophilicity/hydrophobicity- modulated mechanism has been proposed to illustrate the distinct structural evolution pathway of un-TS-1 nanocrystals and single-crystalline ZSM-5 HSZs under identical synthetic conditions: the relatively stronger hydrophobicity of TS-1 due to the equal-valence substitution of Ti for Si, is suggested to be responsible for the formation of nano-crystalline TS-1, in comparison with ZSM-5 HSZs of higher hydrophilicity resulting from the tri-valence Al substitution for Si. The successful syntheses of relatively hydrophilic Al-containing TS-1 and Fe-doped silicalite-1 HSZs offer further support to this mechanism.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary ; Crystallography
研究领域[WOS]	Chemistry ; Crystallography
关键词[WOS]	MESOPOROGEN-FREE SYNTHESIS ; CATALYTIC-PROPERTIES ; OXIDATIVE DESULFURIZATION ; H2O2 ; EPOXIDATION ; PORE ; RECRYSTALLIZATION ; NANOSHEETS ; HYDROXYLATION ; POROSITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000396132500004
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23681]
专题	上海硅酸盐研究所_高性能陶瓷和超微结构国家重点实验室_期刊论文
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 3.Sinopec Shanghai Res Inst Petrochem Technol, 1658 Pudong N Rd, Shanghai 201208, Peoples R China
推荐引用方式 GB/T 7714	Ge, Tongguang,Hua, Zile,Lv, Jian,et al. Hydrophilicity/hydrophobicity modulated synthesis of nano-crystalline and hierarchically structured TS-1 zeolites[J]. CRYSTENGCOMM,2017,19(10):1370-1376.
APA	Ge, Tongguang.,Hua, Zile.,Lv, Jian.,Zhou, Jinling.,Guo, Hangle.,...&Shi, Jianlin.(2017).Hydrophilicity/hydrophobicity modulated synthesis of nano-crystalline and hierarchically structured TS-1 zeolites.CRYSTENGCOMM,19(10),1370-1376.
MLA	Ge, Tongguang,et al."Hydrophilicity/hydrophobicity modulated synthesis of nano-crystalline and hierarchically structured TS-1 zeolites".CRYSTENGCOMM 19.10(2017):1370-1376.