摘要
非均相金属氧化物催化臭氧氧化技术已日趋成熟,其中负载型催化剂使用较多,对羟基金属氧化物催化臭氧氧化技术展开讨论。羟基氧化铁可加快臭氧的氧化效率,提高有机物的可生化性,降低溴酸盐的形成。表面羟基位是目前流行的机理探究方向,但是对于催化臭氧氧化反应的活性位点仍未形成定论。金属氧化物催化剂因其操作简便和无附加能量投入得到重视,因此深入揭示多相催化臭氧化降解污染物催化机理,制备廉价、高效、易回收再利用的催化剂是未来研究的方向。
Nowadays heterogeneous metal oxide catalyzed ozonation technology has become mature,and loaded catalyst is widely used,so hydroxy ferric oxide catalyzed ozonation technology is discussed in this paper. Hydroxy ferric oxide can accelerate the efficiency of ozonation,improve the biodegradability of organics and reduce the formation of bromate. Surface hydroxyl sites is the major research direction of mechanism at present,but the active site of catalytic ozone oxidation reaction has not form a conclusion yet. Due to its easy operation and no additional energy input,metal oxide catalyst is valued;therefore thoroughly revealing the catalytic mechanism in heterogeneous catalytic ozonation and preparing cheap,efficient,and easy-recycling catalyst are the direction of the future research.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第10期1-5,共5页
Environmental Engineering
基金
上海市国际科技合作基金项目"抗生素废水中残抗源头原位减毒减量处理及尾水臭氧降解技术研究"(14230710900)
关键词
臭氧
非均相催化
微污染有机物
催化机理
羟基自由基
速率常数
ozone
heterogeneous catalysis
micro-pollutions
catalytic mechanism
hydroxyl radicals
rate constants
