欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
引言 铬酸酐主要用于电镀、作氧化剂、水溶性木材防腐剂、制铬盐、着色玻璃等，是一种重要的化工产品，近年发展相当迅速．其传统生产工艺中的Na2Cr2O7-H2SO4间歇熔融法、外热连续法、自热连续法、湿法等技术，都不可避免地存在NaHSO4污染产品、铬流失、污染环境等问题．发展前景看好的是有绿色技术之称的电合成法，
英文摘要：
A new green technology of producing chromic anhydride with an electrochemical synthesis method was studied to solve the pollution problems in the traditional production process of chromic anhydride. A self-made electrosynthesis reactor of pure titanium and stainless steel, with a multiple-unit metal oxides combination anode, a cathode of stainless steel, and a reinforced combination cation exchange membrane with perfluorosulfonic and perfluorocarboxylic polymers was used to carry out, the direct electrochemical synthesis experiment of chromic anhydride from sodium dichromate. From the experimental results and the principle of electrochemical reaction, it was found that the process of electrochemical synthesis reaction of chromic anhydride might be quantitatively followed by the variation of operating voltage measured macroscopically with reaction time. Operating voltages were experimentally measured at the different initial sodium dichromate concentrations of the anolyte in the electrosynthesis process of chromic anhydride, and the variation of operating voltage with reaction time was discussed. The mathematical model of the variation of operating voltages with reaction time and the rate of change equations of operating voltage were established. The model characterizes the change of operating voltages in the electrosynthesis process of chromic anhydride, and provideds the foundations for the further study and process monitoring of the electrochemical synthesis of chromic anhydride.
同期刊论文项目
同项目期刊论文
Removal of Ca(II) and Mg(II) from potassium chromate solution on Amberlite IRC 748 synthetic resin b
期刊信息
位置：