CoAl2O4/蜂窝陶瓷催化剂的制备及其催化臭氧化性能
CoAl2O4/Ceramic Honeycomb Catalyst: Preparation and Performance on Catalytic Ozonation in Wastewater Treatment
作者单位E-mail
张兰河 东北电力大学化学工程学院, 吉林 132012 zhanglanhe@163.com 
高伟围 东北电力大学化学工程学院, 吉林 132012  
陈子成 东北电力大学化学工程学院, 吉林 132012  
周靖 东北电力大学化学工程学院, 吉林 132012  
王旭明 北京农业生物技术研究中心, 北京 100089  
张海丰 东北电力大学化学工程学院, 吉林 132012  
摘要: 采用涂覆法制备了CoAl2O4/蜂窝陶瓷催化剂。利用X射线衍射、N2吸附-脱附和透射电镜等方法对所制备的催化剂进行了表征,并分析了其催化臭氧化降解对苯二酚的效能。结果表明,CoAl2O4/蜂窝陶瓷的晶相属于典型的尖晶石结构,具有较大的比表面积、孔容和孔径,分别达到77 m2·g-1、0.001 7 cm3·g-1和3.9 nm。CoAl2O4/蜂窝陶瓷催化臭氧化对苯二酚的去除率高达81.2%,COD去除率可达47.7%。在叔丁醇存在的条件下,对苯二酚的去除率显著下降,说明CoAl2O4/蜂窝陶瓷催化臭氧化遵循羟基自由基机理。
关键词: 催化臭氧化  对苯二酚  CoAl2O4/蜂窝陶瓷  羟基自由基
基金项目: 吉林省科技发展计划项目(No.20160101295JC,20150519020JH)资助
Abstract: CoAl2O4/ceramic honeycomb catalyst was prepared by coated method and was characterized by X-ray diffraction, N2 adsorption-desorption and transmission electron microscope. Catalytic ozonation of hydroquinone was conducted to evaluate its catalytic activity. The results showed that the crystal phase of CoAl2O4/ceramic honeycomb belonged to a typical spinel structure with a large specific surface area of 77 m2·g-1, pore volume of 0.001 7 cm3·g-1 and pore size of 3.9 nm. The removal efficiencies of hydroquinone and COD during ozonation of O3-CoAl2O4/ceramic honeycomb were 81.2% and 47.7%, respectively. The degradation efficiency of hydroquinone decreased significantly after the addition of tert-butanol, and the ozonation of CoAl2O4/ceramic honeycomb catalyst should follow a hydroxyl radical mechanism.
Keywords: catalytic ozonation  hydroquinone  CoAl2O4/ceramic honeycomb  hydroxyl radical
投稿时间:2016-12-18 修订日期:2017-03-18
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张兰河,高伟围,陈子成,周靖,王旭明,张海丰.CoAl2O4/蜂窝陶瓷催化剂的制备及其催化臭氧化性能[J].无机化学学报,2017,33(6):985-992.
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