摘要
以α-Al_(2)O_(3)为支撑层,UiO-66为分离层,Co_(3)O_(4)为催化层,构建了Co_(3)O_(4)/UiO-66@α-Al_(2)O_(3)陶瓷膜.对其形貌结构进行了表征,并研究了其对挥发性有机物(VOCs)的分离催化性能.结果表明,该陶瓷膜对喷涂行业废气中苯与吡啶两种主要成分体现出良好的分离性,透过侧的气体中吡啶与苯的摩尔浓度比值可由给料侧的1提高至17;体系中引入臭氧后,给料侧苯的浓度明显降低,其去除率可达到89%.透过侧的吡啶去除率仅为27%,得到了较大程度的保留,剩余的吡啶经收集后可进行单独的深度处理.Co_(3)O_(4)/UiO-66@α-Al_(2)O_(3)陶瓷膜在对喷涂行业废气中苯成分高效降解的同时,能够有效解决喷涂行业废气处理过程中氮氧化物的排放问题,有望成为喷涂行业废气预处理工艺的理想选择.
Co_(3)O_(4)/UiO-66@α-Al_(2)O_(3) ceramic membranes were constructed withα-Al_(2)O_(3) as the support layer,UiO-66 as the separation layer,and Co_(3)O_(4) as the catalytic layer.The ceramic membrane exhibits outstanding separation performance of benzene/pyridine.The molar concentration ratio of pyridine to benzene in the gas on the permeate side can be increased from 1 to 17 on the feed side.After O_(3) was introduced into the system,the concentration of benzene on the feed side was significantly reduced,and its removal rate can reach 89%.The removal rate of pyridine on the permeate side was only 27%,which was retained to a large extent,and the remaining pyridine could be collected for separate advanced treatment.The Co_(3)O_(4)/UiO-66@α-Al_(2)O_(3) ceramic membrane can effectively solve the emission problem of nitrogen oxides in the waste gas treatment process of the spraying industry,and is expected to be an ideal choice for the waste gas pretreatment process of the spraying industry.
作者
姜宏斌
代文臣
张娆
徐晓晨
陈捷
杨光
杨凤林
JIANG Hongbin;DAI Wenchen;ZHANG Rao;XU Xiaochen;CHEN Jie;YANG Guang;YANG Fenglin(Key Laboratory of Wastewater Treatment Technology of Liaoning Province,School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110158,China;Key Laboratory of Industrial Ecology and Environmental Engineering,Ministry of Education,School of Environ-mental Science and Technology,Dalian University of Technology,Dalian 116081,China;Research Institute of No.240,China National Nuclear Corp(CNNC),Shenyang 110032,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第6期246-257,共12页
Chemical Journal of Chinese Universities
基金
工业生态与环境工程教育部重点实验室开放基金(批准号:KLIEEE-21-05)
辽宁省科技重大专项项目(批准号:2019020171-JH1/103-04)资助.
关键词
膜分离
催化臭氧氧化
喷涂行业废气
金属有机框架
吸附能
Membrane separation
Catalytic ozonation
Waste gas from spraying industry
Metal organic frameworks(MOFs)
Adsorption energy
