Encapsulation of copper(II) complexes with three dentate NO$_{2}$ ligands derived from 2,6-pyridinedicarboxylic acid in NaY zeolite

Authors : MASSOMEH GHORBANLOO, SOMAYEH GHAMARI, HIDENORI YAHIRO

Pages : 550-562

Doi:10.3906/kim-1408-42

View : 16 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :2,6-Pyridinedicarboxylic acid insert ignore into journalissuearticles values(H$_{2}$dipic); reacts with copper-exchanged zeolite NaY to form [Cuinsert ignore into journalissuearticles values(dipic);insert ignore into journalissuearticles values(H$_{2}$O);$_{2}$]$_{n}$, which is encapsulated in the pores of the zeolite. In this zeolite-encapsulated form, the copper derivative functions as an efficient catalyst for the oxidation of cyclohexene, toluene, cyclohexane, and ethyl benzene in the presence of hydrogen peroxide insert ignore into journalissuearticles values(as an oxidant);. The catalyst was readily recovered from the reaction mixture, and it could be reused for an additional three runs without perceptible loss of activity. The heterogeneous catalyst exhibited considerably higher activity and selectivity compared with [Cuinsert ignore into journalissuearticles values(dipic);insert ignore into journalissuearticles values(H$_{2}$O);$_{2}$]$_{n}$ itself.
Keywords : Encapsulated catalyst, zeolite, heterogeneous, hydrogen peroxide, copper complex