新型V2O5/VOSO4催化剂催化降解气相二噁英

摘要

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 V205/VOSO4 catalysts was enhanced with the increase of V205 content,which showed that V205 was the active component; the active component was dispersed well and the activity of supported V2O5/VOSO4-TiO2-BaSO4 catalyst was improved obviously due to the decrease of the particle sizes of the catalyst. The catalytic removal rate of o-dichlorobenzene over V2O5/VOSO4-TiO2-BaSO4 catalyst prepared under the optimizing process condition reached 97％ at high space velocity.%筛选出新型V2O5/VOSO4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,V2O5/VOSO4催化剂的催化活性随着V2O5含量的增加而增大,说明V2O5是活性物质.SEM结果表明,负载后的V2O5/VOSO4-TiO2-BaSO4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V2O5/VOSO4-TiO2-BaSO4负载型催化剂,高空速下,对邻二氯苯的去除率可达97%.