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

被引：68
|
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
收藏
页码：232 / 238
页数：7
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