杂多化合物催化性能的研究——在相转移条件下由十二钨磷杂多酸钠催化的H_2O_2分解反应动力学和机理  

STUDY ON THE CATALYTIC PROPERTY OF HETEROPOLY COMPOUND: A KINETIC AND MECHANISM STUDY OF H_2O_2 DECOMPOSITION CATALYZED BY Na_2HPW_(12)O_(40) UNDER PHASE TRANSFER CONDITIONS

作　　者：马建伟[1] 叶兴凯[1] 吴越[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《Chinese Journal of Catalysis》1991年第6期443-450,共8页催化学报（英文）

基　　金：国家自然科学基金

摘　　要：在相转移条件下研究了由Na_2HPW_(12)O_(40)(简写为PW_(12))催化的H_2O_2分解反应动力学。相转移催化剂氯代十六烷基吡啶与H_2O_2作用生成的含活性氧的中间化合物,在CHCl_3中溶解度很大但不稳定,可分解放出氧气。在此基础上,深入分析了两相反应的特点,提出了反应机理,首次推导出其反应动力学方程,并验证了与实验结果的一致性。The hcteropoly tungstophosphoric compounds, K7PW11O39.xH2O (PW11), K5PW11ZO 39.xH2O(PW11 Z, Z = Mn II . Co II) ,which have Keggin structure and H6P2W18O62.xH2O, K6P2W18O62.xH2O (P2W18), K16P2-Wl7O01.xH2O (P2W17), K8P2W17ZO61.xH2O (P2W17Z, Z = MnII,CoII), which have Dawson structure have been synthesized. Their physico-chemical properties were studied systematically by means of DTA,TG, IR, X-ray diffraction and cyclic voltammograms. In addition, the relationship between the structure and the catalytic activity of the hetero-poly compounds in the reaction of H2O2 decomposition was discussed.

关 键 词：磷钨杂多酸盐 催化剂 合成 性质 

分 类 号：TQ426.91[化学工程]