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Direct impregnation method for preparing sulfated zirconia supported on mesoporous silica |
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| Authors: | Chang-Lin Chen Tao Li Soofin Cheng Hong-Pin Lin Chetan J Bhongale Chung-Yuan Mou |
| Affiliation: | a Department of Chemistry, National Taiwan University, 1 Roosevelt Road, Section 4, Taipei 106, Taiwan b College of Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China c Institute of Atomic and Molecular Science, Academia Sinica, Taipei 106, Taiwan |
| Abstract: | A new method has been developed to prepare sulfated zirconia (S–ZrO2) supported on mesoporous silica. With direct exchange of metal containing precursors for the surfactants in the as-synthesized MCM-41 materials, the problem of fill-up of the mesoporous structure was avoided and high sulfur content was achieved. By using this method, the composite of S–ZrO2/MCM-41 with ZrO2 content higher than 60 wt.% can be easily obtained without serious blockage of the pore structure of MCM-41. Nevertheless, the pore size and pore volume of the resultant S–ZrO2/MCM-41 composites were found to vary markedly with the loading of ZrO2. The strong acidic character of the obtained composites was examined by using them as catalysts in n-butane isomerization. Introduction of other metals such as aluminum as promoter into S–ZrO2/MCM-41 can be easily conducted by the direct impregnation method. |
| Keywords: | Direct impregnation Sulfated zirconia Mesoporous silica Butane isomerization |
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