纳米Cu/3Y-ZrO_2复合材料的制备及脱硫性能研究  

Study on preparation and desulphurization performance of nanometer Cu/3Y-ZrO_2 composite material

作　　者：汪慧峰[1] 顾华志[1] 汪厚植[1] 

机构地区：[1]武汉科技大学高温陶瓷与耐火材料湖北省重点实验室,湖北武汉430081

出　　处：《功能材料》2007年第8期1366-1369,共4页Journal of Functional Materials

基　　金：湖北省自然科学基金资助项目(2003ABA079)

摘　　要：研究了不同制备方法得到的Cu/3Y-ZrO2纳米材料的结构和物相变化,并在模拟烟气中采用气相色谱仪对其脱除SO2的性能进行了比较研究。结果表明,以氨水为沉淀剂,采用共沉淀-超临界干燥法所得的产物晶形发育较好且团聚较少,但经真空热处理后,在铜负载量为30%以上时才出现以金属Cu形式存在的铜组分衍射峰;而以碳酸钠为沉淀剂,采用分步沉淀-真空干燥处理后的产物晶形发育较差,团聚程度也增加,在相同的热处理条件下,铜负载量为10%以上就出现了CuO的衍射峰。与分步沉淀-真空干燥法得到的产物相比,共沉淀-超临界干燥产物的脱硫率较高,稳定性也较好。　The change of structure and phase of Cu/3Y-ZrO2 nanometer material obtained by different preparation methods has been investigated in the paper,and in simulated flue gas,desulphurization performance of them has been studied by gas chromatograph.Results show that product prepared by coprecipitation-supercritical drying method using ammonia liquor as precipitant has well-developed crystal and less agglomeration,but with vacuum heat treatment,diffraction peak of copper component only exsits in the form of the metal copper at above 30% copper loading;when sodium carbonate is used for precipitant,sample prepared by fractional precipitation-vacuum drying method presents poor crystal shape and the degree of glomeration also increases.With the same heat treatment,there is diffraction of copper oxide at above 10% copper loading.In contract with outcome obtained by fractional precipitation-vacuum drying method, product gained by co-precipitation-supercritical drying method has higher desulphurization rate and better stability.

关 键 词：纳米材料 氧化铜 氧化锆 制备 脱硫 

分 类 号：TQ17[化学工程—硅酸盐工业]