不同温度下电合成重铬酸钾的电压变化  

Variation of Operating Voltage in the Electrosynthesis Process of Potassium Dichromate under Different Temperature

作　　者：陈根生[1] 李成未[1] 王福安[1] 张鹏[1] 齐涛[2] 张懿[2] 

机构地区：[1]郑州大学化工学院,河南郑州450002 [2]中国科学院过程工程研究所,北京100080

出　　处：《河南化工》2007年第8期15-17,共3页Henan Chemical Industry

基　　金：国家自然科学基金项目(20676136)

摘　　要：在自制二室电合成反应器中,以K2CrO4水溶液为阳极液,阳极液浓度为1.278 mol.L-1,KOH水溶液为阴极液,进行恒电流反应,用精密电压表测得不同温度下K2Cr2O7电合成过程中的电压。本文建立了操作电压和反应时间的数学模型,满意地表征了K2Cr2O7电合成过程中的电压变化。建立了电压变化率方程,讨论了电压变化规律,为电合成K2Cr2O7的过程监测和进一步研究提供基础。Depending on a self - made two - chamber electrosynthesis reactor , where the anolyte is 1. 278mol ·L^-1 K2CrO4 aqueous solution, the catholyte is KOH aqueous solution, operating voltage at different time and different temperature are measured by using a precise potentiometer in the electrosynthesis process of K2Cr2O7. The mathematical model of the operating voltage and reaction time are established, which satisfactorily described the change rule of operating voltage in the electrosynthesis process of K2Cr2O7. The change rate equation of operating voltage is established, and the change rule of operating voltage is also discussed. It provides foundations for the searching research and process monitoring of the electrosynthesis of K2Cr2O7.

关 键 词：电合成 模型 操作电压 重铬酸钾 

分 类 号：TQ131.13[化学工程—无机化工]