摘要
采用1000L阴极转动分隔式电解槽,研究了硝基苯电解合成对氨基苯酚(PAP)的工业化放大过程.研究表明,转动阴极电解槽的工作特性与阴极转速、电流强度、温度、隔膜材料等因素有关.当电解电流为3000A时,硝基苯的平均转化率为91.0%,PAP平均收率为67.6%,直流电单耗为7.34 kW(h((kg PAP)(1.电解合成的PAP纯度在97%以上,熔点为187.2~188.4(C.
The scale-up of the electrochemical reduction of nitrobenzene to p-aminophenol in sulfuric acid solution was investigated by using the 1000L-type reactor with a rotating Cu-Hg cathode and ceramic membranes. The experimental results showed that the electrolytic properties were related with the rotating speed of cathode, current density, temperature and type of ceramic membrane. Under the current of 3000~3600A, the average current efficiency and conversion ratio of nitrobenzene to p-aminophenol was 60% and 91% respectively. The average yield of p-aminophenol was up to 65% and the DC power consumption was 7.34kWh(kg PAP)-1. The purity of p-aminophenol was higher than 97%, and its average melting point was in the range of 187.2 to 188.4C.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2001年第5期453-457,共5页
Journal of Chemical Engineering of Chinese Universities
基金
浙江省科技厅重大科技项目资助(001101089)。
