响应面法优化β-Co(OH)2的合成

化工进展

响应面法优化β-Co(OH)2的合成

赵美霞，高军，张红凤，高晓涵

（山东科技大学化学与环境工程学院，山东青岛 266510）

出版日期:2011-03-05 发布日期:2011-03-05

Optimization of synthesis of β-Co(OH)2 by response surface methodology

ZHAO Meixia，GAO Jun，ZHANG Hongfeng，GAO Xiaohan

（School of Chemical and Environmental Engineering，Shandong University of Science and Technology，Qingdao 266510，Shandong，China）

Online:2011-03-05 Published:2011-03-05

摘要/Abstract

摘要：

以硫酸钴、氢氧化钠为原料，氨水为络合剂，抗坏血酸为保护剂合成β-Co(OH)₂。实验研究了反应温度、氢氧化钠溶液浓度、络合剂与硫酸钴中Co²⁺的摩尔比和保护剂对产品收率的影响。采用三因素三水平的响应面分析法对工艺条件进行优化，得到了β-Co(OH)₂合成的最优工艺条件。实验结果表明：在反应温度为79 ℃、氢氧化钠溶液浓度为2.89 mol/L、络合剂与硫酸钴中Co²⁺的摩尔比为2.19等条件下，合成的β-Co(OH)₂最高收率为97.40%，同时通过X射线衍射对产物进行了结构表征。

Abstract:

β-Co(OH)₂ was synthesized with cobalt sulfate，sodium hydroxide as raw materials，ammonia as complexing agent，and ascorbic acid as protective agent. The effects of reaction temperature，concentration of NaOH，molar ratio of complexing agent to cobalt ion on the yield were investigated，and the reaction conditions were optimized by response surface methodology（RSM）with three factors and three levels. A correlation model for the optimized synthesis yield of β-Co(OH)₂ was presented. The optimal synthesis conditions of β-Co(OH)₂ with ascorbic acid were as follows：reaction temperature 79 ℃，concentration of NaOH 2.89mol/L，ratio of complexing agent to cobalt ion 2.19，and the optimized yield was 97.40%. The structure of the product was verified by XRD.

赵美霞，高军，张红凤，高晓涵. 响应面法优化β-Co(OH)2的合成 [J]. 化工进展.

ZHAO Meixia，GAO Jun，ZHANG Hongfeng，GAO Xiaohan. Optimization of synthesis of β-Co(OH)2 by response surface methodology[J]. Chemical Industry and Engineering Progree.