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
고온고표면양화려신재료적제비화학연구——란화표면활성제대양화려성질적영향
RESEARCH ON A NEW CATALYTIC MATERIAL-HIGH TEMPERATURE RESISTING ALUMINA WITH HIGH SPECIFIC SURFACE AREA ——EFFECT OF LATHANUM AND SURFACEFACTANT ON PROPERTY OF ALUMINA
  • 万方数据
    化学研究与应用 화학연구여응용
    CHEMICAL RESEARCH AND APPLICATION
    2001年 2期 216-219 ,共4页

    林之恩%龚茂初%谢春英%陈耀强%郑林%许清淮%李孝维

    림지은%공무초%사춘영%진요강%정림%허청회%리효유

    高表面氧化铝%表面活性剂%聚乙烯醇%镧%热稳定性 高錶麵氧化鋁%錶麵活性劑%聚乙烯醇%鑭%熱穩定性
    고표면양화려%표면활성제%취을희순%란%열은정성


    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 102.7m2g-1 after calcination at 1100℃ for 32h
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