Design and synthesis of bi-functional Co-containing zeolite ETS-10 catalyst with high activity in the oxidative coupling of alkenes with aldehydes for preparing α,β-epoxy ketones

作者：Hu, Jun; Xia, Feifei; Yang, Fengli; Weng, Jushi; Yao, Pengfei; Zheng, Chunzhi; Zhu, Chaojie; Tang, Tiandi; Fu, Wenqian^*

来源：RSC Advances, 2017, 7(65): 41204-41209.

DOI：10.1039/c7ra06828j

• MICROPOROUS TITANOSILICATE ETS-10
• ONE-POT SYNTHESIS
• EPOXY KETONES
• EPOXIDATION
• ZSM-5
• HYDROPEROXIDES
• SELECTIVITY

Developing highly efficient heterogeneous catalysts for organic synthesis is of great importance in modern synthetic chemistry. In this work, Co (or Ni)-containing mesoporous zeolite ETS-10 (Co-METS-10 and Ni-METS- 10) with both metal and strong basic sites were synthesized and applied for the direct oxidative coupling of alkenes with benzaldehydes to synthesize alpha,beta-epoxy ketones. Co (or Ni)-METS-10 catalysts show high activity and product selectivity, as compared to metal-free mesoporous zeolite ETS-10 (METS-10). This feature is attributed to the fact that the highly dispersed Co (or Ni) species could facilitate the tert-butyl hydroperoxide transformation into more alkyloxy and alkylperoxy radicals, which triggers the alkenes undergoing radical addition with aldehyde and alkylperoxy to form beta-peroxy ketones. Meanwhile, the basic sites on Co (or Ni)-METS-10 catalysts benefit the formation of alpha,beta-epoxy ketone from beta-peroxy ketone.

• 出版日期2017
• 单位江苏大学; 常州大学; 江苏理工学院