Schiff碱配合物的研究——Ⅸ.表面Schiff碱配合物对H_2O_2分解的催化作用

STUDIES ON SCHIFF BASE COMPLEXES DC. CATALYTIC ACTIVITY OF SURFACE SCHIFF BASE COMPLEXES FOR DECOMPOSITION OF HYDROGEN PEROXIDE

制备了两种表面Schiff碱及其Cu^(2+)、Co^(2+)、Ni^(2+)、Zn^(2+)配合物,考察了它们对H_2O_2分解的催化性能,其活性顺序为:Co^(2+)>Cu^(2+)>Ni^(2+)>Zn^(2+),且与金属离子氧化还原电位有关。溶液的pH值增加有利于催化反应,有机配体的加入则对反应有所抑制。

Two polymer supported Schiff bases (P-ensal and P-diensal) and related complexes with Cu2+, Co2+, Ni2+, and Zn2+ have been prepared and their catalytic activity for decomposition of hydrogen peroxide has been studied as a model reaction. The catalytic activity is greatly influenced by the rcdox potentials of the metal ions and the order is as follows: Co2+>Cu2+>Ni2+>Zn2+ The larger values of pH increase the catalytic activity, while adding organic adducts, such as phcn, Im, py, or bipy, would restrain the reaction.