{"title":"钴配合物催化过氧化氢分解的研究","authors":"R.V. Prasad, N.V. Thakkar","doi":"10.1016/0304-5102(94)00063-8","DOIUrl":null,"url":null,"abstract":"<div><p>The role of cobalt(II) and its complexes with 1-phenyl 1-hydrazonyl 2-oximinopropanedione (HPHOPD) as homogeneous and heterogeneous catalysts in the decomposition of hydrogen peroxide has been investigated by measuring evolution of oxygen at different time intervals in the temperature range 35–60°C. Enhanced activity is observed with Co(PHOPD)<sub>2</sub> used as heterogeneous catalyst and with cobalt:HPHOPD (1:1) complex heterogenized by adsorption on alumina, while in case of solutions of cobalt(II) chloride and cobalt:HPHOPD (1:1), used as homogeneous catalysts, the activity is comparatively low and negligible respectively. The reaction rate, in general, is found to increase with increase in temperature and quantity of the catalyst. Various thermodynamic parameters have been calculated. The adduct formation with a heterocyclic base like pyridine, 3-methyl pyridine, chloro pyridine or quinoline is found to inhibit the catalytic activity of Co(PHOPD)<sub>2</sub>. The probable reaction mechanisms have been suggested for Co(PHOPD)<sub>2</sub> and alumina-Co<sup>II</sup>-HPHOPD as catalysts.</p></div>","PeriodicalId":16567,"journal":{"name":"分子催化","volume":"92 1","pages":"Pages 9-20"},"PeriodicalIF":0.0000,"publicationDate":"1994-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-5102(94)00063-8","citationCount":"32","resultStr":"{\"title\":\"Study of cobalt complexes as catalysts in the decomposition of hydrogen peroxide\",\"authors\":\"R.V. Prasad, N.V. Thakkar\",\"doi\":\"10.1016/0304-5102(94)00063-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The role of cobalt(II) and its complexes with 1-phenyl 1-hydrazonyl 2-oximinopropanedione (HPHOPD) as homogeneous and heterogeneous catalysts in the decomposition of hydrogen peroxide has been investigated by measuring evolution of oxygen at different time intervals in the temperature range 35–60°C. Enhanced activity is observed with Co(PHOPD)<sub>2</sub> used as heterogeneous catalyst and with cobalt:HPHOPD (1:1) complex heterogenized by adsorption on alumina, while in case of solutions of cobalt(II) chloride and cobalt:HPHOPD (1:1), used as homogeneous catalysts, the activity is comparatively low and negligible respectively. The reaction rate, in general, is found to increase with increase in temperature and quantity of the catalyst. Various thermodynamic parameters have been calculated. The adduct formation with a heterocyclic base like pyridine, 3-methyl pyridine, chloro pyridine or quinoline is found to inhibit the catalytic activity of Co(PHOPD)<sub>2</sub>. The probable reaction mechanisms have been suggested for Co(PHOPD)<sub>2</sub> and alumina-Co<sup>II</sup>-HPHOPD as catalysts.</p></div>\",\"PeriodicalId\":16567,\"journal\":{\"name\":\"分子催化\",\"volume\":\"92 1\",\"pages\":\"Pages 9-20\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0304-5102(94)00063-8\",\"citationCount\":\"32\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"分子催化\",\"FirstCategoryId\":\"1089\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0304510294000638\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Chemical Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"分子催化","FirstCategoryId":"1089","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0304510294000638","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Chemical Engineering","Score":null,"Total":0}
Study of cobalt complexes as catalysts in the decomposition of hydrogen peroxide
The role of cobalt(II) and its complexes with 1-phenyl 1-hydrazonyl 2-oximinopropanedione (HPHOPD) as homogeneous and heterogeneous catalysts in the decomposition of hydrogen peroxide has been investigated by measuring evolution of oxygen at different time intervals in the temperature range 35–60°C. Enhanced activity is observed with Co(PHOPD)2 used as heterogeneous catalyst and with cobalt:HPHOPD (1:1) complex heterogenized by adsorption on alumina, while in case of solutions of cobalt(II) chloride and cobalt:HPHOPD (1:1), used as homogeneous catalysts, the activity is comparatively low and negligible respectively. The reaction rate, in general, is found to increase with increase in temperature and quantity of the catalyst. Various thermodynamic parameters have been calculated. The adduct formation with a heterocyclic base like pyridine, 3-methyl pyridine, chloro pyridine or quinoline is found to inhibit the catalytic activity of Co(PHOPD)2. The probable reaction mechanisms have been suggested for Co(PHOPD)2 and alumina-CoII-HPHOPD as catalysts.
期刊介绍：
Journal of Molecular Catalysis (China) is a bimonthly journal, founded in 1987. It is a bimonthly journal, founded in 1987, sponsored by Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, under the supervision of Chinese Academy of Sciences, and published by Science Publishing House, which is a scholarly journal openly circulated both at home and abroad. The journal mainly reports the latest progress and research results on molecular catalysis. It contains academic papers, research briefs, research reports and progress reviews. The content focuses on coordination catalysis, enzyme catalysis, light-ribbed catalysis, stereochemistry in catalysis, catalytic reaction mechanism and kinetics, the study of catalyst surface states and the application of quantum chemistry in catalysis. We also provide contributions on the activation, deactivation and regeneration of homogeneous catalysts, solidified homogeneous catalysts and solidified enzyme catalysts in industrial catalytic processes, as well as on the optimisation and characterisation of catalysts for new catalytic processes.
The main target readers are scientists and postgraduates working in catalysis in research institutes, industrial and mining enterprises, as well as teachers and students of chemistry and chemical engineering departments in colleges and universities. Contributions from related professionals are welcome.
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