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- Title
Synthesis of Hierarchical Titanium Silicalite-1 Using a Carbon-Silica-Titania Composite from Xerogel Mild Carbonization.
- Authors
Pei, Xinya; Liu, Xiaoxue; Liu, Xiaoyu; Shan, Jinling; Fu, Hui; Xie, Ying; Yan, Xuemin; Meng, Xianzhu; Zheng, Yancheng; Li, Geng; Wang, Qi; Li, Hao
- Abstract
Hierarchical titanium silicalite-1 (HTS-1) zeolites are an important class of catalytic materials due to their enhanced mass transfer and improved catalytic performance. In this study, HTS-1 zeolites have been successfully prepared by the hydrothermal crystallization of carbon-silica-titania (CST) composites. Compared with the direct carbonization method, the mild carbonization of SiO2-TiO2/Tween 40 xerogel in the presence of sulfuric acid can effectively improve both the content and mesoporous structure of carbon material in the CST composites, which enables carbon materials to better play the role of a mesoporous template during the crystallization process. The resultant zeolite has both ordered micropores and interconnected mesopores and macropores, which are similar to the skeleton of the carbon template trapped in the TS–1 crystals. Moreover, the HTS–1 zeolite displays outstanding catalytic performance in oxidative desulfurization of bulky sulfur compounds.
- Subjects
DESULFURIZATION; CARBONIZATION; HYDROTHERMAL synthesis; SULFUR compounds; TITANIUM; MASS transfer; MESOPOROUS materials; COLLOIDAL crystals
- Publication
Catalysts (2073-4344), 2019, Vol 9, Issue 8, p672
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal9080672