新型V_2O_5/VOSO_4催化剂催化降解气相二噁英  

Catalytic decomposition of gaseous dioxin on a novel V_2O_5/VOSO_4 catalyst

作　　者：张文睿[1] 唐爱东[1] 向辉[1] 万总[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《工业催化》2011年第5期59-63,共5页Industrial Catalysis

基　　金："十一五"国家科技支撑计划(2008BAC32B05-3)

摘　　要：筛选出新型V_2O_5/VOSO_4催化剂并评估催化分解二噁英模型物邻二氯苯的性能。表征结果表明,V_2O_5/VOSO_4催化剂的催化活性随着V_2O_5含量的增加而增大,说明V_2O_5是活性物质。SEM结果表明,负载后的V_2O_5/VOSO_4-TiO_2-BaSO_4催化剂颗粒变小,活性成分得到很好分散,催化活性显著提高。经优化工艺后,制备得到V_2O_5/VOSO_4-TiO_2-BaSO_4负载型催化剂,高空速下,对邻二氯苯的去除率可达97%。A novel V2O5/VOSO4 catalysts were screened and its performance of the catalytic decomposition of odichlorobenzene（o-DCB） as a model of dioxin was investigated.The results indicated that the catalytic activity of V2O5/VOSO4 catalysts was enhanced with the increase of V2O5 content,which showed that V2O5 was the active component; the active component was dispersed well and the activity of supported V2O5/VOSO4 TiO2BaSO4 catalyst was improved obviously due to the decrease of the particle sizes of the catalyst.The catalytic removal rate of odichlorobenzene over V2O5/VOSO4TiO2BaSO4 catalyst prepared under the optimizing process condition reached 97% at high space velocity.

关 键 词：催化化学 V_2O_5/VOSO_4催化剂 硫酸氧钒 二噁英 邻二氯苯 

分 类 号：O643.361[理学—物理化学] TQ426.6[理学—化学]