活性炭纤维负载CeO_2催化净化NO的优化设计  

Optimum Design on Catalytic Purification of NO by CeO_2-loaded Activated Carbon Fiber

作　　者：李群[1] 李彩亭[1] 路培[1] 王群敬[1] 李珊红[1] 彭亮[1] 

机构地区：[1]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《稀土》2008年第6期50-53,共4页Chinese Rare Earths

基　　金：湖南省自然科学基金重点项目(03JJY2002);新世纪优秀人才支持计划项目(NCET-04-0769);教育部科学技术研究重点项目(105126)

摘　　要：为考察负载稀土氧化物的活性炭纤维(ACF)催化净化NO的实验效果,采用等体积浸渍法制备了一系列负载CeO2的ACF负载型催化剂,在微型反应器中通过程序升温反应,利用正交实验考察了不同温度、不同负载量、不同氧气体积比以及不同空速下催化剂脱除NO的最佳催化净化效率。实验结果表明,催化效率受反应温度变化的影响最大,在实验温度范围,以250℃时净化效率最好;其次为氧气的体积分数,以5%的净化效率最佳;混合气体中CeO2负载量和空速的影响最小。并在此基础上探讨了经硝酸活化过的负载不同量CeO2的ACF催化剂的催化净化特性。To research the experimental effect of rare- earth- oxide- loaded activated carbon fibers（ACF）, the CeO2- loaded ACFs were prepared by isometric impregnation. By the method of orthogonal experiment , the optimum catalytic purification efficiency was studied under conditions of different temperatures, different loading, different volumetric ratio of oxygen and different airspeed by the agency of procedure warming reaction in micro - reactor . The results show that the variation of temperature is the most important factor, the highest efficiency is at 250℃ ; volumetric ratio of oxygen is the second, the best is at 5% ; the less are CeO2 - loaded and airspeed. On the base of orthogonal experiment, the catalytic characteristics of different CeO2 - loaded ACF activated by nitric acid are studied.

关 键 词：稀土氧化物 活性炭纤维 等体积浸渍 正交实验 活化 

分 类 号：X701[环境科学与工程—环境工程]