Chinese Journal of Applied Chemistry

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Synthesis, Characterization and Catalytic Performance Toward the Friedel-Crafts Acylation of Tributyltin Functionalized SBA-15

JING Tao, QIN Zhile, SONG Weiming*, ZHAO Yunpeng, DENG Qigang   

  1. (College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)
  • Received:2012-12-12 Revised:2013-01-26 Published:2013-08-10 Online:2013-08-10
  • About author:荆涛,博士;副教授;Tel:0452-2738324;Fax:0452-2738324;E-mail:HYPERLINK "mailto:jtkr@163.com" jtkr@163.com;研究方向:催化剂工程

Abstract: The organotin inorganic complexes (C4H9)3Sn-O-SBA-15[Bu3SnS] were successfully synthesized by grafting tributyltin on SBA-15 mesoporous molecular sieves in a nitrogen atmosphere. The composition, structure and properties of the samples were characterized by X-ray diffraction(XRD), transmittance electron microscopy(TEM), Hammett indicator method, N2 adsorption-desorption, solid nuclear magnetic resonance(NMR) , in-situ pyridine infrared spectroscopy(Py-IR) and so on. The results show that the hexagonal P6mm mesostructure of parent siliceous SBA-15 is maintained in Bu3SnS. The surface areas, proe size and volume of Bu3SnS are all deceased with the increase of acidity, compared to those of SBA-15. Friedel-Crafts acylation of anisole and benzoyl chloride can be efficiently catalyzed in the presence of Bu3SnS. The reaction conversion of anisole and the selectivity of p-benzoylanisole are 76.0% and 97.8%, respectively, when the molar ratio of anisole to benzoyl chloride is 0.5∶1.0, the amount of catalyst is 6%, the reaction temperature is 130 ℃ and the reaction time is 5 h.

Key words: tributyltin, SBA-15, functional complex, Friedel-Crafts reaction, selective catalytsis

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