溶剂共沸脱水法合成BPO_4粉体  

BPO_4 Powders prepared by solvent azeotropic dewatering

作　　者：张军[1] 王锐[1] 姜恒[1] 宫红[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《化工科技》2012年第1期37-39,共3页Science & Technology in Chemical Industry

摘　　要：以硼酸和质量分数为85%磷酸为反应原料,环己烷做带水剂,在不同的反应时间下,利用溶剂共沸脱水法制备磷酸硼粉体。产物的XRD、FT-IR分析表明,在磷酸硼中含有少量未反应的硼酸。产物分别在120、140℃下进行热处理,每2h取样进行FT-IR、XRD测试。测试结果表明,共沸2h制得磷酸硼在120℃下热处理6h,或140℃下热处理4h,可得到纯的磷酸硼粉体。共沸5h制得磷酸硼120℃下热处理4h,或140℃下热处理2h,可得到纯的磷酸硼粉体。BPO4 Powders were prepared by an approach of solvent azeotropic dewatering under diffi- erent reaction time, using HaBO3 and 850/oo H3PO4 as starting materials, cyclohexane as water-carrying agent. The powder was eharactered by XRD and FT-IR, the results showed that products contained small amount of unreacted H3BO3. The products were heated in the oven at 120 °C and 140 °C in differ- ent time, and tested by XRD and FT-IR. The results showed the pure BPO4 powders can be synthetized when boil-together 2 h with heat treatment 6 h at 120 °C or with heat treatment 4 h at 140 °C and boiltogether 5 h with treatment 4 h at 120 °C or with heat treatment 2 h at 140 °C.

关 键 词：磷酸硼 共沸脱水 合成 

分 类 号：TQ128[化学工程—无机化工]