硼酸镁晶须的制备与表征  

The preparation and characterization of magnesium borate whiskers

作　　者：高枫[1] 范俊刚[1] 孙怀宇[1] 王祝敏[1] 裴世红[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142

出　　处：《应用化工》2010年第10期1537-1538,1556,共3页Applied Chemical Industry

摘　　要：以氢氧化镁、硼酸为反应物,氯化钠-氯化钾混合作助熔剂,高温固相合成法合成硼酸镁晶须。通过正交实验探讨硼酸镁晶须制备的最佳工艺条件:原料镁硼摩尔比1∶1,原料与助熔剂摩尔比1∶1.5,800℃高温固相合成2 h。采用X射线衍射仪和扫描电镜对硼酸镁晶须结构表征及表面相貌观察分析,所制备的硼酸镁晶须长度20μm,直径1.5μm针状晶体。对硼酸镁晶须合成过程进行了探讨分析。Mg2B2O5 whiskers were prepared by high-temperature solid-phase synthesis method with Mg（OH）2 and H2BO3 as raw materials,NaCl and KCl as flux.According to orthogonal test,the optimum parameters obtained,Mg∶B（mol）=1∶1 in raw materials,raw materials∶flux（mol）=1∶1.5,high-temperature solid-phase synthesis by 800 ℃ and 2 h.The whisker structures were characterized by powder X-ray diffraction（XRD） and surface appearance analyzed by scan microscope.The results showed Mg2B2O5 whiskers length was 20 μm and diameter 1.5 μm.The process of Mg2B2O5 whiskers preparation was discussed and analyzed.

关 键 词：硼酸镁 晶须 制备 表征 

分 类 号：TQ128.54[化学工程—无机化工]