| Hierarchically Structured Monolithic ZSM-5 through Macroporous Silica Gel Zeolitization |
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| 作者姓名： | Lei Qian Zhao Tianbo Li Fengyan Zong Baoning Tong Yangchuan |
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| 作者单位： | [1]The Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081 [2]Department of Applied Chemistry, Beijing Institute of Petrochemical Technology [3]Research Institute of Petroleum Processing, SINOPEC |
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| 摘 要： | 1 Introduction Zeolites with porous diameters in the molecular size range have been widely used in the industry as catalysts, adsorbents, ion exchangers, etc1,2]. However, the sole pres- ence of micropores often limits the performance of zeolites in their practical applications because they can cause diffusion limitations on the reaction rate. Consequently, some research efforts have been focused on hierarchically structured zeolites, which can combine different levels of porosity into a sing…
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| 关 键 词： | 沸石 ZSM-5 等级孔隙度 大孔硅凝胶 蒸汽转化 吸附 石油炼制 |
Hierarchically Structured Monolithic ZSM-5 through Macroporous Silica Gel Zeolitization |
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| Lei Qian Zhao Tianbo Li Fengyan Zong Baoning Tong Yangchuan.Hierarchically Structured Monolithic ZSM-5 through Macroporous Silica Gel Zeolitization[J].China Petroleum Processing and Petrochemical Technology,2006(1):57-60. |
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| Authors: | Lei Qian Zhao Tianbo Li Fengyan Zong Baoning Tong Yangchuan |
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| Abstract: | The hierarchically structured ZSM-5 monolith was prepared through transforming the skeletons of the macroporous silica gel into ZSM-5 by the steam-assisted conversion method. The morphology and monolithic shapes of macroporous silica gel were well preserved. The hierarchically structured ZSM-5 monolith exhibited the hierarchical porosity, with mesopores and macropores existing inside the macroporous silica gel, and micropores formed by the ZSM-5. The products have been characterized properly by using the XRD, SEM and N2 adsorption-desorption methods. |
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| Keywords: | zeolite ZSM-5 hierarchical porosity macroporous silica gel steam-assisted conversion |
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