摘要
采用固相反应法以硼酸和磷酸二氢铵为原料制备磷酸硼(BPO4)产品,研究了原料配比(氧化硼与五氧化二磷物质的量比)、反应温度对产物化学组成和结构的影响,确定的最佳工艺条件为:n(氧化硼)m(五氧化二磷)为1.0~1.05,反应温度为850~1000℃。用红外光谱(IR)、X射线衍射(XRD)研究了产品的物相结构。温度是影响物相结构的主要因素,当固相反应温度达到1000℃时,所得产品晶体结构完整,产品质量稳定。采用热重一差热分析(TG-DTA)和差示扫描量热法(DSC)研究了高温固相反应过程,提出了该工艺的反应机理,并确定了在技术上、经济上可行的工艺路线。
Boron phosphate (BPO4) was prepared with boric acid and monoammonium phosphate as raw materials by solid state reaction method.Influences of the amount-of-substance ratio of boric oxide to phosphorus pentoxide and reaction temperature on the product's composition and structure were investigated.Optimum technological conditions were determined as follows:the amount-of-substance ratio of boric oxide to phosphorus pentoxide was 1.0-1.05, and the reaction temperature was 850-1 000 ℃.The phase structure of the product was analyzed by IR and XRD.Temperature was the main factor affecting the phase structure,when the solid state reaction temperature reached 1 000 ℃ ,the product had such characteristics as complete crystal structure and stable product quality.The reaction process was studied by TG-DTA and DSC analysis and reaction mechanism was brought forward.Finally, it was confirmed that the synthesis technique was technically feasible and economically reasonable.
出处
《无机盐工业》
CAS
北大核心
2014年第1期31-34,共4页
Inorganic Chemicals Industry
关键词
磷酸硼
固相反应
生产工艺
boron phosphate
solid state reaction
synthesis techniques