不同晶型控制剂对碳酸钡形貌的影响

Effect of different crystal control agents on the morphology of barium carbonate

碳酸钡是一种重要的无机盐产品,在陶瓷、电子等工业领域具有广泛的应用价值。不同的工业领域对于碳酸钡颗粒的形貌需求各不相同,对碳酸钡的质量要求也越来越高。本文采用直接沉淀法,以二水氯化钡和碳酸钠为原料进行碳酸钡晶体制备,通过添加和控制柠檬酸(C_(6)H_(8)O_(7))、三聚磷酸钠(Na_(5)P_(3)O_(10))、植酸(C_(6)H_(18)O_(24)P_(6))分别制备出柱状、球刺状、标枪状和鱼卵团聚体等不同形貌的碳酸钡粒子,同时通过pH和红外检测分析对不同形貌形成机理进行了初步分析。为研究调控碳酸盐晶体矿化生长提供可行的方法和重要的理论依据。

Barium carbonate is an important inorganic salt product with wide and economic applications in ceramics,electronics,and other industrial fields.Different industrial fields have different requirements for the morphology of barium carbonate particles,and the quality of barium carbonate is becoming more and more demanding.In this paper,barium carbonate crystals were prepared by direct precipitation method with barium chloride dihydrate and sodium carbonate as raw materials.Barium carbonate particles with different morphologies such as columnar,spherical spike,javelin,and fish-egg agglomerates were prepared by adding and controlling citric acid(C_(6)H_(8)O_(7)),sodium tripolyphosphate(Na_(5)P_(3)O_(10))and phytic acid(C_(6)H_(18)O_(24)P_(6)),respectively,while barium carbonate particles with different morphologies were analyzed by pH and infrared detection.A preliminary analysis of the formation mechanism of different morphologies was carried out by pH and IR detection.The preliminary analysis of the formation mechanism of different morphologies by pH and infrared detection was also carried out,providing a feasible method and an important theoretical basis for the study of the regulation of carbonate crystal mineralization growth.