磷酸硼与铅锑氧化物高温反应的XRD研究  

Investigation with XRD on Reaction of BPO_4 with PbO and Sb_2O_3 at High Temperature

作　　者：吴文伟[1] 吴学航[1] 樊艳金[1] 侯生益[1] 廖森[1] 赖水彬[1] 

机构地区：[1]广西大学化学化工学院,南宁530004

出　　处：《有色金属》2009年第1期56-59,共4页Nonferrous Metals

基　　金：广西自然科学基金资助项目(0640009);广西大型仪器协作共用网资助基金项目(360-2006-049)

摘　　要：在了解混合物在升温过程中有关热性质变化的基础上,通过TG/DTA和XRD研究磷酸硼分别与氧化铅、氧化锑粉末所组成的混合物在指定温度下的煅烧产物。结果表明,磷酸硼与氧化铅在850℃下反应30min形成无定型的产物,而在相同温度下煅烧掺有NaCl的混合物得到结晶良好的Pb5(PO4)3Cl产物。磷酸硼与氧化锑在850℃下反应形成SbPO4和SbOPO4的混晶,在混合物中加入NaCl后得到的煅烧产物则为无定型的产物。此外,四元混合物煅烧产物的组成及晶型取决于磷酸硼的加入量。The calcining products of mixtures of BPO4 with PbO or Sb2O3 at fixed temperature are investigated by TG/DTA and XRD on the basis of knowledge on the thermal performance change of reactant mixture in process of increasing temperature. The results show that an amorphous product is obtained from calcining mixture of BPO4 and PbO at 850°C for 30min, however, the product is the crystal Pb5 （PO4）3Cl under the same condition in the presence of NaCl. The mixed crystal of SbPO4 and SbOPO4 is formed when BPO4 reacts with Sb2O3 at 850°C , while the amorphous product is formed under the same conditons in the presence of NaCl. Moreover, composition and crystal type of product obtained from calcining mixture depend on BPO4 dosage.

关 键 词：冶金技术 锑 除铅剂 高温固相反应 

分 类 号：TF818[冶金工程—有色金属冶金] TF114.1