响应面法优化WC氧化溶解复合抑制剂配方的研究

Formulation Optimization for Compound Inhibitors of WC Oxidation Dissolution by Response Surface Methodology

根据通用中心旋转组合(CCD)试验设计原理,采用响应面分析法对复合抑制剂的配方进行试验设计与优化。研究了水热体系环境下由柠檬酸钠、硼砂、对硝基苯甲酸三乙醇胺酯(简称芳环醇胺酯)组成的复合抑制剂对WC粉氧化溶解程度的影响。试验测定了在不同配比抑制剂溶液中加入WC粉前后的电池电动势变化,并以ΔE为响应指标作响应面和等高线,分析了各因素之间的相互作用及WC在各溶液中的浸出程度。结果表明,响应值最大即WC氧化溶解程度最低时的复合抑制剂配方为柠檬酸钠0.983 5g/100mLH2O,硼砂2.507 4g/100mLH2O,摩尔比为1∶1.1的芳环醇胺酯2.510 3g/100mLH2O;回归模型预测值为0.059 07V,实际测定值为0.058 36V。

Based on the principle of universal central composite rotatable design （CCD）,the formulation of compound inhibitors was optimized and the related experiment was designed, by response surface analysis. Effects of compound inhibitors on oxidation dissolution of WC powder were investigated in hydrothermal environment,and compound inhibitors are composed of sodium citrate, borax, nitro-benzoic acid triethano- lamine ester （simplified as aromatic amine ester）. The electromotive force changes of different inhibitor so- lution were determined before and after adding WC powder. Response surface and contour line were drawn with AE as the response indicator. The interaction between various factors and leaching degree of WC in different solution were analyzed. The results show that with max response value i. e. minimum WC oxida- tion dissolution,the compound inhibitor formula is as follows：sodium citrate 0. 983 5 g/100 mLH20,borax 2. 507 4 g/100 mLH20,aromatic amine ester with 1 ： 1.1 molar ratio 2. 510 3 g/100 mLH20. And the pre- dictive value of the regression model is 0. 059 07 V and the actual measured value is 0. 058 36 V.