聚电解质-Cu(Ⅱ)络合物催化氢醌氧化的催化机理和动力学的研究

A Study on Catalytic Mechanism and Kinetics in Oxidation Reaction of Hydroquinone Catalyzed by Polyelectrolyte-Cu(Ⅱ) Complex

本文介绍用溴乙烷部分季铵盐化聚4-乙烯基吡啶(EBQP4VP-Cu(Ⅱ)络合物催化氢醌氧化。研究表明该催化氧化机理是一种快速循环氧化-还原反应,催化反应是典型的Michaelis-Menten型动力学行为。本文推导计算出该催化反应的速率常数,并指出该反应速率随溶液的pH值增大而增大。

Oxidation reaction of hydroquinone was catalyzed by Cu(Ⅱ) complex of poly(4-vinylpyridine) partially quaternized by ethyl bromide. It is exhibited that the mechanism of catalytic reaction is a quickly cyclic oxidation-reduction reaction. The reaction is in accord with typlcal Michaelis-Menten kinetic behavior. The rate of oxidation was determined and calculated and it increases with the increasing of pH value in reaction system.