镍含量对NiCoPrLa类水滑石结构及衍生复合氧化物的还原性能影响  

The Influence of Ni Content on Structure of NiCoPrLa Hydrotalcite-like Compounds and the Reductive Properties of Its Derived Composite Oxides

作　　者：刘凌轩 

机构地区：[1]中海炼化惠州炼化分公司,广东惠州516086

出　　处：《广东化工》2015年第6期74-75,共2页Guangdong Chemical Industry

摘　　要：用共沉淀法制备了镍含量不同的NiCoPrLa类水滑石,用XRD、TG和TPR对NiCoPrLa类水滑石及其衍生复合氧化物的结构、热稳定性和还原性能进行了表征。结果表明,Ni/Pr比增加,类水滑石的结晶度会随之增加,但其热稳定性随之下降;Ni2+含量增大,NiCoPrLa类水滑石样品的还原性较好,还原峰面积增大。NiCoPrLa hydrotalcite-like compounds with different Ni content were prepared by coprecipitation. The structure, thermal stability and reduction properties of NiCoPrLa hydrotalcite-like compounds and its derived composite oxides were characterized with XRD, TG and TPR. The results showed that, with the increase of Ni/Pr ratio, the degree of crystallization of hydrotalcite like compounds increased while the thermal stability decreased; with the increase of Ni^2＋ content, NiCoPrLa hydrotalcite-like compounds showed better reductive properties and the reduction peak area increased also.

关 键 词：镍含量 NiCoPrLa类水滑石 衍生复合氧化物 

分 类 号：TQ[化学工程]