分析纯乙酸钡的制备新工艺  

The new technique processes for preparing barium acetate

作　　者：畅柱国[1] 杨孟林[1] 朱亚娟 吴淑荣[1] 熊为淼[1] 

机构地区：[1]西北大学化学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2002年第2期131-133,共3页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省自然科学基金资助项目 (1999;H0 6 ) ;陕西省教委重点资助项目 (0 0 JK0 0 3)

摘　　要：提出了用毒重石矿粉与工业乙酸直接作用的新工艺 ,制备了分析纯乙酸钡 ,研究了结晶次数和重结晶等工艺对乙酸钡主含量、产率、纯度的影响规律 ,并研究了草酸沉淀剂对除去杂质离子Ca2 + ,Sr2 + 的影响。结果表明 :控制结晶产率到 6 3 % ,加草酸形成共沉淀 ,可有效除去 Ca2 + ,Sr2 + 等杂质 ;不加草酸通过重结晶等方法 ,均可使乙酸钡产品质量达到分析纯的质量标准。The new technique processes for preparing barium acetate from the reaction of witherite with industrial acetic are developed.The influence of the crystallization numbers and recrystalization on the content, yield and purity of barium acetate is studied, and the influence of coprecipatator of oxalic acid on the removing of Ca 2+ and Sr 2+ involved. The experimental results indicate that the standard of analytical purity for barium acetate is obtained by 63% of the crystallization yield in coprecipatation method through addition of oxalic acid to remove Ca 2+ and Sr 2+ or in recrystallization without oxalic acid.

关 键 词：毒重石 工业冰乙酸 重结晶 分析纯乙酸钡 制备工艺 结晶次数 陶瓷原材料 

分 类 号：TQ262.2[化学工程—有机化工]