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在TiO2催化剂上苯酚光催化氧化反应研究1.降解产物分布及反应途径
引用本文:王怡中,胡春,汤鸿霄.在TiO2催化剂上苯酚光催化氧化反应研究1.降解产物分布及反应途径[J].环境科学学报,1995,15(4):472-479.
作者姓名:王怡中  胡春  汤鸿霄
作者单位:中国科学院生态环境研究中心,环境水化学国家重点实验室
摘    要:选择TiO2粉末催化剂,考察了在中压汞灯作用下,苯酚光催化氧化途径及产物分布。对反应过程中的羟基物、羧酸及二氧化碳3个反应阶段的产物进行了详细的全组份分析。对其中8种主要产物追踪其浓度的变化。尤其对目前人们尚地确定的中间极性物,进行很好的分离测定。

关 键 词:光催化  氧化  苯酚  降解产物  水处理  TiO2催化剂
收稿时间:1/6/1995 12:00:00 AM

PHOTOCATALYTIC OXIDATION OF PHENOL ON TiO2 PRATICLE 1.PRODUCTS DISTRIBUTIO ON AND PEACTION PATHWAY
Wang Yizhong,Hu Chun and Tong Hongxiao.PHOTOCATALYTIC OXIDATION OF PHENOL ON TiO2 PRATICLE 1.PRODUCTS DISTRIBUTIO ON AND PEACTION PATHWAY[J].Acta Scientiae Circumstantiae,1995,15(4):472-479.
Authors:Wang Yizhong  Hu Chun and Tong Hongxiao
Institution:Research Centre for Eco-Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of sciences, Beijing 100085,Research Centre for Eco-Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of sciences, Beijing 100085 and Research Centre for Eco-Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of sciences, Beijing 100085
Abstract:The photocatalytic oxidation of phenol in TiO_2 particle suspensions has been studied in atest reactor illuminated with a 5000 W medium pressure mercury lamp.Eight main productshave been identified by HPLC, IC,TOC and GC /MS.The results indicated that there arethree stages of reaction from the viewpoint of products distribution, there are hydroxyla-tion,carboxylation and mineralization,The oxidation process could be explained nd justifiedby means of coricentration variation of main products like pyrocatechol,fumaric acid andCO_2 and the carbon mass balance achieved 94.4%,The effects of CO_2 concentration in gas phase on the phenol decomposition and products distribution have been investigation.
Keywords:photocatalytic oxidation  phenol  products distribution    
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