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Synthesis of ZSM-5 on kaolin microspheres in the absence of an organic amine template

Published online by Cambridge University Press:  09 July 2018

S.-H. Sun ,
J.-T. Ma  and
X.-H. Gao
S.-H. Sun
Affiliation:
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P R China Petrochemical Research Institute, Lanzhou Petrochemical Company, PetroChina, Lanzhou 730060, P R China
J.-T. Ma*
Affiliation:
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P R China
X.-H. Gao
Affiliation:
Petrochemical Research Institute, Lanzhou Petrochemical Company, PetroChina, Lanzhou 730060, P R China
*
*E-mail: [email protected]
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Abstract

Zeolite ZSM-5 was synthesized successfully, in situ, on pyrokaolin microspheres (PKM) under hydrothermal conditions, without the use of an organic amine template. The utility of alkali-modified pyrokaolin microspheres (AMKM) was also evaluated. The resulting products were characterized using X-ray diffraction, scanning electron microscopy (SEM) and N2-adsorption isotherm data. The material containing ZSM-5 synthesized from the system PKM-additional silica-water had a large surface area and pore volume with significant enhancements in the micropore surface area and micropore volume. The SEM images show that the synthesis of zeolite ZSM-5 from pyrokaolin microspheres (PKM) led to the formation of polycrystalline aggregates <2 μm in size. The purity of the zeolite ZSM-5 produced was affected by both the pH value of the reactant system and the reaction temperature. In the system containing AMKM-additional silica-water, very little of the synthesized zeolite resided on the kaolin microspheres.

Keywords

organic amine templatekaolin microspheresZSM-5zeolitesynthesis
Type
Research Article
Information
Clay Minerals , Volume 42 , Issue 2 , June 2007 , pp. 203 - 211
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2007

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References

Boukadir, D., Bettahar, N. & Derriche, Z. (2002) Synthesis of zeolites 4A and HS from natural materials. Annales de Chimie, 27, 1–13 (in French).CrossRefGoogle Scholar
Cai, Q.X. & Wen, H.X. (1995) Study on synthesizing 4A zeolite with kaolinite from Fenqiao Zhuji. Geology of Zhejiang (China), 11, 79–85.Google Scholar
Chandrasekhar, S.Y. & Pramada, P.N. (2004) Kaolin-based zeolite Y, a precursor for cordierite ceramics. Applied Clay Science, 27, 187–198.Google Scholar
Katsuki, H. & Furuta, F. (2000) Formation of novel ZSM-5 porous mullite composite from sintered kaolin honeycomb by hydrothermal reaction. Journal of the American Ceramic Society, 83, 1093–1097.CrossRefGoogle Scholar
Lee, S.G., Kim, J.K. & Kwon, J.Y. (2005) Low temperature synthesis of zeolite using ultrasonic energy. Materials Science Forum, 486/487, 281-284.Google Scholar
Li, F.C.H. & Chen, Y. (2002) Study on synthesis of 4A zeolite from coal-series kaolin. Jiangsu Chemical Industry (China), 30, 40–43.Google Scholar
Liu, C.H., Sun, S.H., Ma, Y.Q. & Liu, Y. (1999) Interactions of kaolin with heavy metals. Chinese Journal of Catalysis (China), 20, 174–176.Google Scholar
Liu, X.M., Yan, Z.F., Wang, H.P. & Luo, Y.T. (2003) In situ synthesis of NaY zeolite with coal-based kaolin. Journal of Natural Gas Chemistry, 12, 63–70.Google Scholar
Oblad, A.G. (1972) Molecular sieve cracking catalysts. The Oil and Gas Journal, 70, 84–106.Google Scholar
Su, J.M., Liu, W.B., Liu, J.L. & Wu, L.P. (2004) Synthesis and catalytic cracking performance of ZSM-5 zeolites with high silica alumina ratio. Petroleum Processing and Petrochemicals (China), 35, 18–22.Google Scholar
Sun, S.H., Zheng, S.Q., Wang, Z.F., Zhang, Y.H. & Ma, J.T. (2005) Sulphur reduction additive prepared from caustic-modified kaolin. Clay Minerals, 40, 311–316.CrossRefGoogle Scholar
Wang, J., Dong, J.L., Liu, Y. & Xu, Q.H. (2000) Studies on the mechanism of synthesis of zeolite 4A from metakaolinite. Chinese Journal of Inorganic Chemistry (China), 16, 31–36.Google Scholar
Xu, M.C., Cheng, M.J., Tan, D.L., Liu, X.M., Bao, X.H., Zong, B.N. & Min, E.Z. (2001) Growth of zeolites on kaolin microspheres. Chinese Journal of Catalysis (China), 22, 32–34.Google Scholar
Xu, N., Kan, Q.B. & Qi, R.G. (2004) Dynamic synthesis and characterization of ZSM-22 zeolite with high silica. Chinese Journal of Catalysis (China), 23, 367–370.Google Scholar
Zheng, S.H.Q., Jiang, W.Q. & Suo, J.S.H. (2003) Study on the properties of kaolin based FCC catalysts. Industrial Catalysis (China), 11, 49–52.Google Scholar