铈对纳米氧化锌室温脱硫剂结构及性能的影响  

Effect of Cerium on Structure and Performance of the Desulfurization with Nanocrystalline ZnO at Room Temperature

作　　者：李芬[1] 姜安玺[1] 邵纯红[1] 闫波[1] 刘丽艳[1] 孙莞柠[2] 闫立龙[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150090 [2]清华大学,北京100084

出　　处：《稀有金属材料与工程》2006年第A02期347-350,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50478026)

摘　　要：采用均匀沉淀法制备了掺铈的纳米氧化锌脱硫剂,利用TG-DTA,XRD等检测方法对脱硫剂的元素组成及结构进行了分析。并以H2S为目标污染物,研究了Ce:Zn(摩尔比)、脱硫温度、空速、氧含量等因素对脱硫剂性能的影响。结果表明,铈掺杂有助于活性组分细化,使脱硫剂的粒径减小,脱硫活性增强。在常压、空速9500 h-1,25℃无氧条件下,Ce:Zn=4:100的脱硫剂,其脱硫性能最佳。Nanocrystalline ZnO doping Ce for desulfurization was preparation with the method of homogeneous deposit and the element composition and the structure were analyzed by TG-DTA and XRD. Taking H2S as model pollutant, the effects of the molar ratio of Ce：Zn, the temperature, oxygen content and space velocity on the sorbent desulfurization were investigated. The results showed that the adding of Ce refined the active grain size and increased the desulfurization of sorbent. The sorbent desulfurization has very high desulfurization activity in the normal atmosphere with a space velocity of 9500 h^-1 and at 25 ℃ without oxygen and with a molar ratio of Ce： Zn is 4：100.

关 键 词：铈 纳米氧化锌 室温 脱硫 

分 类 号：TB383.1[一般工业技术—材料科学与工程]