臭氧催化体系中沸石分解臭氧的研究  

Catalytic Ozone aqueous Decomposition Promoted by Zeolite

作　　者：刘智武[1] 胡斯翰 裘建平[1] 蒙媛[1] Liu Zhiwu Hu Sihan Qiu Jianping Meng Yuan(J inHua Polytechnic, JinHua 321000, China Zhejiang Environmental Monitoring Engineering Limited Company, Hangzhou 31000, China)

机构地区：[1]金华职业技术学院,浙江金华321000 [2]浙江省环境监测有限公司,浙江杭州321000

出　　处：《绿色科技》2017年第18期58-61,共4页Journal of Green Science and Technology

基　　金：浙江省科技厅项目(编号:2015C33235);浙江省自然科学基金(编号:Q15E080030);金华市科技局项目(编号:2014-3-041)

摘　　要：考察了沸石对水中臭氧的催化分解能力,实验研究了各个反应条件(沸石性能、反应pH值、温度)对沸石催化臭氧能力的影响,实验发现:沸石的存在能显著促进水中臭氧的分解,并能催化臭氧产生成羟基自由基;沸石进行盐酸改性能提高臭氧的分解速率,且随着盐酸的浓度升高而提高,主要归因于其比表面积的增大;随着pH值升高,沸石催化臭氧的能力也随之提高,但是当Ph和沸石本身的pHpzc时,沸石催化臭氧的效率最高。温度的提高也能促进沸石催化臭氧的能力。This study investigated the catalytic decomposition of zeolite for ozone in water and studied the various re- action conditions （zeolite performance, reaction pH, temperature） on the zeolite catalytic ozone capacity. It was found the presence of a zeolite can significantly promote water and decomposition of ozone, which can catalyze ozone into hydroxyl radical; The hydrolysis of zeolite can improve the decomposition rate of ozone and increases with the increase of hydrochloric acid concentration, which is mainly due to the increase of specific surface area; as the pH value increased, the ability that zeolite catalyzes ozone also increases, but when the Ph and zeolite are at itself pHpzc, it has highest catalytic efficiency. The increase in temperature can promote the ability of zeolite catalytic ozone.

关 键 词：沸石 臭氧 催化 羟基自由基 

分 类 号：X513[环境科学与工程—环境工程]