Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (4): 723-729.DOI: 10.3724/SP.J.1088.2012.11019

• Research papers • Previous Articles     Next Articles

Ammoximation of Citronellal with H2O2 Catalyzed by TS-1

ZHANG Shuo, DENG Xiujuan, SHEN Lu, LIU Yueming*   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2011-10-13 Revised:2011-12-06 Online:2012-04-13 Published:2015-09-09

Abstract: The TS-1/H2O2 system has excellent catalytic performance in citronellal ammoximation to citronellal oxime. The effects of various reaction parameters on the catalytic properties of TS-1 were studied in detail. Under the optimized reaction conditions, citronellal conversion and citronellal oxime selectivity are over 99.9% and 99.2%, respectively. We found that there is also aldol condensation, which is competitive with ammoximation. Moreover, the epoxidation and ammoximation of citronellal catalyzed by TS-1 are also competitive reactions. The side reactions can be restrained efficiently by adjusting NH3 amount in reaction system.

Key words: TS-1 zeolite, citronellal, hydrogen superoxide, ammoximation, citronellal oxime