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High activity in catalytic cracking of large molecules over micro-mesoporous silicoaluminophosphate with controlled morphology

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Abstract

A novel micro-mesoporous silicoaluminophosphate (MUS-5) with controlled morphology has been first synthesized in a two-step route. The physical properties of the silicoaluminophosphate were characterized using XRD, SEM, TEM, nitrogen adsorption-desorption and NH3-TPD techniques. When the pH value of the solution system was varied in the range from 2.0 to 5.0, three different morphologies of silicoaluminophosphate including chain-like, flower-like and barrel-like morphology were obtained. Catalytic tests showed that the silicoaluminophosphate exhibited higher catalytic activity compared with the conventional microporous SAPO-5 under the same conditions for catalytic cracking of 1,3,5-triisopropylbenzene heavy aromatics. The remarkable catalytic reactivity was mainly attributed to the presence of the hierarchical porosity in the silicoaluminophosphate catalyst.

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Authors and Affiliations

  1. Institute for Chemical Physics, Beijing Institute of Technology, Beijing, 100081, China

    Jian Qi, TianBo Zhao & Xin Xu

  2. Department of Applied Chemistry, Beijing Institute of Petrochemical Technology, Beijing, 102617, China

    FengYan Li & GuiDa Sun

Authors
  1. Jian Qi
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  2. TianBo Zhao
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  3. Xin Xu
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  4. FengYan Li
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  5. GuiDa Sun
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Correspondence to TianBo Zhao.

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Qi, J., Zhao, T., Xu, X. et al. High activity in catalytic cracking of large molecules over micro-mesoporous silicoaluminophosphate with controlled morphology. Sci. China Chem. 53, 2279–2284 (2010). https://doi.org/10.1007/s11426-010-4102-0

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