高温高表面氧化铝新材料的制备化学研究——镧和表面活性剂对氧化铝性质的影响  

RESEARCH ON A NEW CATALYTIC MATERIAL-HIGH TEMPERATURE RESISTING ALUMINA WITH HIGH SPECIFIC SURFACE AREA ——EFFECT OF LATHANUM AND SURFACEFACTANT ON PROPERTY OF ALUMINA

作　　者：林之恩[1] 龚茂初[1] 谢春英[1] 陈耀强[1] 郑林[2] 许清淮[2] 李孝维[2] 

机构地区：[1]四川大学化学学院,四川成都610064 [2]四川川化集团公司催化剂厂,四川成都610301

出　　处：《化学研究与应用》2001年第2期216-219,共4页Chemical Research and Application

基　　金：四川省应用基础研究基金!资助项目

摘　　要：The effect of surfacefactant(polyvinylalcohol,PVA) and lanthanum on the property of alumina was studied by XRD,XPS,TEM and surface analysis techniques.The results showed that addition of proper amount of PVA and lanthanum can prevent alumina crystal from growing at high temperature and inhibit alumina from transforming to α phase and improve its pore structure.PVA can also make lanthanum less rich at the surface of samples,so alumian can keep high surface area after calcination at high temperature,then its thermal stability was improved.When W(La)∶W(Al)=0.052∶1 and W(PVA)∶W(alumina)=0.4∶1,the alumina can maintain surface area of 102.7m 2g -1 after calcination at 1100℃ for 32h.The effect of surfacefactant(polyvinylalcohol,PVA) and lanthanum on the property of alumina was studied by XRD,XPS,TEM and surface analysis techniques.The results showed that addition of proper amount of PVA and lanthanum can prevent alumina crystal from growing at high temperature and inhibit alumina from transforming to α phase and improve its pore structure.PVA can also make lanthanum less rich at the surface of samples,so alumian can keep high surface area after calcination at high temperature,then its thermal stability was improved.When W(La)∶W(Al)=0.052∶1 and W(PVA)∶W(alumina)=0.4∶1,the alumina can maintain surface area of 102.7m 2g -1 after calcination at 1100℃ for 32h.

关 键 词：高表面氧化铝 表面活性剂 聚乙烯醇 镧 热稳定性 改性 催化剂载体 溶胶凝胶法 制备 

分 类 号：TQ426.65[化学工程]