Synthesis of hierarchical TS-1 zeolite via a novel three-step crystallization method and its excellent catalytic performance in oxidative desulfurization

被引：70

作者：

Du, Qi ^{[1
]}

Guo, Yiping ^{[1
]}

Duan, Huanan ^{[1
]}

Li, Hua ^{[1
]}

Chen, Yujie ^{[1
]}

Liu, Hezhou ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

来源：

FUEL | 2017年 / 188卷

基金：

中国国家自然科学基金;

关键词：

Hierarchical TS-1; PVA; Mesopore; Oxidative desulfurization; Dibenzothiophene; DIESEL FUEL; TITANIUM SILICALITE-1; EFFICIENT CATALYST; HYDROGEN-PEROXIDE; MOLECULAR-SIEVES; POROUS STRUCTURE; SINGLE-CRYSTALS; MILD CONDITIONS; TEMPLATE; TITANOSILICATE;

D O I：

10.1016/j.fuel.2016.10.045

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Hierarchical TS-1 (HTS-1) zeolite has been successfully synthesized through a novel three-step crystallization method by using a cheap and eco-friendly polymer PVA as the mesopore template. The HTS-1 particles possess an interesting stacking structure and are constructed of smaller crystals with an average diameter of 30 nm. The mesopores of HTS-1 are formed by the stacking of the smaller TS-1 nanocrystals. The catalytic results show that the HTS-1 exhibits much higher catalytic activity than conventional TS-1 in the oxidative desulfurization of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) due to the presence of intracrystal mesopores. In addition, the three-step crystallization method plays a key role in the preparation of HTS-1, which effectively solves the problem that PVA is unstable and unsuitable to be used as mesopore template under high crystallization temperature. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：232 / 238

页数：7

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