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

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

1.
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Corresponding author: Zile Hua, Jianlin Shi,
Received Date: 3 November 2014
Available Online: 15 December 2014
Fund Project: 国家重点基础研究发展计划(973计划, 2013CB933200) (973计划, 2013CB933200) 国家高技术研究发展计划(863计划, 2012AA062703) (863计划, 2012AA062703) 国家杰出青年科学基金(51225202) (51225202) 重质油国家重点实验室开放课题(SKLOP201402003). (SKLOP201402003)

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.
- Ti-beta,
- Post-synthesis,
- Hierarchical porosity,
- Epoxidation,
- Zeolite
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