Pt/TiO_2/ZSM-5在日光下氧化氨氮的研究  

Oxidation of Ammonia by Pt/TiO_2/ZSM-5 under Solar Irradiation

作　　者：杨海明[1] 柳丽芬[1] 张兴文[1] 杨凤林[1] 

机构地区：[1]大连理工大学环境与生命学院

出　　处：《环境科学与技术》2006年第10期1-3,共3页Environmental Science & Technology

基　　金：国家自然科学基金资助项目(20477006)

摘　　要：采用溶胶-凝胶法和光沉积法制备了Pt/TiO2/ZSM-5催化剂。研究了铂修饰对催化剂的吸附性能的影响。考察了催化剂在日光照射下对氨氮的氧化,并以紫外光作为对比。结果表明铂的修饰,对催化剂的吸附能力有较大影响,还可以提高催化剂在日光照射条件下对氨氮的氧化效率和总氮去除率。在太阳光照射、空气曝气条件下,反应2h氨氮去除率达50.1%,总氮去除率达31.8%。Catalyst of Pt/TiO2/ZSM-5 was prepared by a sol-gel and photodeposition method. The effect of platinum loading on absorbability of the catalyst was studied. The oxidation of ammonia by Pt/TiO2/ZSM-5 under solar irradiation was investigated, compared with UV irradiation. Results showed that platinum loading exhibits rather great effect on the absorbability, and enhances the removal efficiency of ammonia and TN. The removal efficiency of ammonia and TN were 50.1% and 31.8% separately under solar irradiation bubbling with air.

关 键 词：纳米二氧化钛 光催化氧化 太阳光 氨氮 负载金属 

分 类 号：X132[环境科学与工程—环境科学]