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Synthesis of ITQ-2 zeolite under static conditions and its properties

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Abstract

Using silica gel as the precursor, MCM-22(p) was synthesized under the static conditions. Then ITQ-2 zeolite was obtained by using n-cetyltrimethylammonium bromide (CTAB) and tetrapropylammonium hydroxide (TPAOH) as the swelling agents to swell the pores of MCM-22(p). The obtained zeolite was characterized by XRD, SEM, BET, NH3-TPD. The results show that the zeolite had the best swelling when MCM-22(p):CTAB:TPAOH=1:4:1. The synthesis duration and temperature did not influence significantly the pore swelling. Except TPAOH, CTAB can also be used together with tetrabuthylammonium hydroxide (TBAOH) as the pore swelling agent. There was contribution of surface area and pore volume from the mesoporous pores in the ITQ-2 zeolite and it also showed weaker acidity than MCM-22. However, the ITQ-2 supported NiW catalyst showed higher activity and selectivity to the middle distillates in the hydrocracking of vacuum gasoil (VGO) than MCM-22 supported catalyst. This implied that the diffusion of large molecules of heavy oil in the catalyst was facilitated due to the presence of the mesoporous pores and hence higher activity and selectivity to middle distillates.

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References

  1. Corma, A., Fornés, V., Pergher, S. B. et al., Oxide material and catalyst compositions containing them, US Patent, 6231751, 2001-05-15.

  2. Corma, A., Martinez, A., Martinez-Soria, V., Catalytic performance of the new delaminated ITQ-2 zeolite for mild hydrocracking and aromatic hydrogenation processes, J. Catal., 2001, 200: 259–269.

    CAS  Google Scholar 

  3. Corma, A., Fornés, V., Pergher, S. B. et al., Delaminated zeolite precursors as selective acidic catalysts, Nature, 1998, 396: 353–356.

    Article  CAS  Google Scholar 

  4. Corma, A., Fornés, V., Martinez-Triguero, J. et al., Delaminated zeolite: Combining the benefits of zeolites and mesoporous materials for catalytic uses, J. Catal., 1999, 186: 57–63.

    Article  CAS  Google Scholar 

  5. Corma, A., Fornés, V., Guil, J. M. et al., Preparation, characterization and catalytic activity of ITQ-2, a delaminated zeolite, Micropor. Mesopor. Mater., 2000, 38: 301–309.

    CAS  Google Scholar 

  6. Liu, B. J., Hou, H. J., Highly efficient synthesis of zeolite MCM-22 using silicasol as silicon source, Petrochem. Technol., 2004, 33(6): 527–530.

    CAS  Google Scholar 

  7. Fu, J., Liu, Z. Q., He, M. Y., Recent development in MWW type zeolites, Petrochem. Technol., 2002, 31(7): 574–579.

    CAS  Google Scholar 

  8. Güray, I., Warzywoda, J., Bac, N. et al., Synthesis of zeolite MCM-22 under rotating and static conditions, Micropor. Mesopor. Mater., 1999, 31(3): 241–251.

    Article  Google Scholar 

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Authors and Affiliations

  1. Key Laboratory of Catalysis of China National Petroleum Corporation, China University of Petroleum, Beijing, 102249, China

    Liu Baijun, Huo Huijuan, Meng Qingmin & Gao Shansong

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  1. Liu Baijun
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  2. Huo Huijuan
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  3. Meng Qingmin
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  4. Gao Shansong
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Correspondence to Liu Baijun.

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Liu, B., Huo, H., Meng, Q. et al. Synthesis of ITQ-2 zeolite under static conditions and its properties. SCI CHINA SER B 49, 148–154 (2006). https://doi.org/10.1007/s11426-006-0148-4

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  • DOI: https://doi.org/10.1007/s11426-006-0148-4

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