Mesoporous chromium oxide doped palladium catalysis for cyanation reaction of some aryl halides


KARAOĞLU K. , AKÇAY H. T. , ÖZÇİFÇİ Z. , Caliskan M., BARAN T.

CERAMICS INTERNATIONAL, vol.47, no.19, pp.27816-27821, 2021 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 19
  • Publication Date: 2021
  • Doi Number: 10.1016/j.ceramint.2021.06.208
  • Title of Journal : CERAMICS INTERNATIONAL
  • Page Numbers: pp.27816-27821
  • Keywords: Cyanation, Mesoporous catalyst, Chromium(III) oxide, COUPLING REACTION, HIGHLY EFFICIENT, METAL-OXIDES, NANOPARTICLES, HIYAMA, LAYER

Abstract

A Pd/Cr2O3 hybrid catalyst for cyanation reaction of some aryl halides was synthesized and characterized by XRD, SEM/EDS and TEM. The porous structure of the catalyst was also investigated by BET analysis. All XRD characteristic lines were obtained for Cr2O3 and Pd/Cr2O3 hybrid in good agreement with the reference XRD data. It was found that average particle size of Pd/Cr2O3 composite was about 22 nm. The catalytic efficiency of the Pd/Cr2O3-catalyzed cyanation reaction was evaluated for some m- and p-substituted aryl halides. The influence of solvent, reaction time, and base on the activity of the Pd/Cr2O3 catalyst was investigated, and the optimal reaction conditions were systematically obtained. Catalytic investigations showed that Pd/Cr2O3 hybrid can exhibit very good catalytic performance for cyanation reaction of aryl halides with a high yield of around 90%, and retained its catalytic activity throughout successive 5 cycles. Comparative TEM images of Pd/Cr2O3 hybrid catalyst, as-synthesized and after 5th cycle, showed that nano-sized structure of Pd/Cr2O3 catalyst was protected without significant change.