Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (11): 2057-2065.DOI: 10.1016/S1872-2067(12)60670-6

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One-pot synthesis of primary amides on bifunctional Rh(OH)x/TS-1@KCC-1 catalysts

Honggen Peng, Darui Wang, Le Xu, Peng Wu   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2013-06-19 Revised:2013-07-23 Online:2013-10-18 Published:2013-10-18
  • Contact: Peng Wu
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (220925310, U1162102), the Specialized Research Fund for the Doctoral of Higher Education (2012007613000), the National Basic Research Program of China (973 Program, 2012BAE05B02), and the Shanghai Leading Academic Discipline Project (B409).

Abstract:

A new microporous/mesoporous composite with a core-shell structure, TS-1@KCC-1, was fabricated in a microemulsion system by coating flower-like mesoporous silica (KCC-1) on the crystal surface of TS-1 zeolite. The synthesis conditions and a possible formation mechanism were studied in detail for the TS-1@KCC-1 material. A suitable temperature and assembly time were found to be 373-393 K and 4 h, respectively. The shell thickness of TS-1@KCC-1 was conveniently tuned in the range 25-80 nm. Rh(OH)x species were supported on TS-1@KCC-1, giving rise to a novel bifunctional tandem catalyst Rh(OH)x/TS-1@KCC-1, which effectively catalyzed the one-pot synthesis of primary amides directly from aldehydes, ammonia, and hydrogen peroxide.

Key words: TS-1 zeolite, Core-shell material, KCC-1, Primary amide, Tandem catalyst