Post-synthesis of hierarchically structured Ti-β zeolites and their epoxidation catalytic performance

doi:10.1016/S1872-2067(14)60267-9

Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (6): 906-912.DOI: 10.1016/S1872-2067(14)60267-9

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Post-synthesis of hierarchically structured Ti-β zeolites and their epoxidation catalytic performance

Wenchao Ren, Zile Hua, Tongguang Ge, Xiaoxia Zhou, Lisong Chen, Yan Zhu, Jianlin Shi

State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received:2014-11-03 Revised:2014-12-15 Online:2015-05-21 Published:2015-05-21
Supported by:
This work was supported by the National Basic Research Program of China (2013CB933200), the High Technology Research and Development Program of China (2012AA062703), China National Funds for Distinguished Young Scientists (51225202), and the Opening Projects of State Key Laboratory of Heavy Oil Processing (SKLOP201402003).

Abstract

Abstract:

Hierarchically structured Ti-β zeolites were prepared using a two-step post-synthesis approach. The physicochemical properties of the resultant Ti-mβ-Sx materials were determined using various techniques, including X-ray diffraction, scanning electron microscopy, inductively coupled plasma atomic emission spectroscopy, transmission electron microscopy, and ultraviolet-visible and ultraviolet-Raman spectroscopies. The porous structures of the synthesized hierarchical Ti-β zeolites were well preserved. Their catalytic performance was compared with that of pure microporous Ti-β materials using alkene epoxidation as a model reaction. It was found that although comparable catalytic activities were obtained for both types of catalyst in the epoxidation of small molecules, e.g., cyclohexene, the synthesized hierarchical Ti-β gave an enhanced catalytic performance in the epoxidation of bulky 1-dodecene.

Key words: Ti-beta, Post-synthesis, Hierarchical porosity, Epoxidation, Zeolite

Wenchao Ren, Zile Hua, Tongguang Ge, Xiaoxia Zhou, Lisong Chen, Yan Zhu, Jianlin Shi. Post-synthesis of hierarchically structured Ti-β zeolites and their epoxidation catalytic performance[J]. Chinese Journal of Catalysis, 2015, 36(6): 906-912.

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Post-synthesis of hierarchically structured Ti-β zeolites and their epoxidation catalytic performance

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