染料与染色
染料與染色
염료여염색
DYESTUFF INDUSTRY
2011年
5期
31-35
,共5页
电化学合成%2,2＇-二氯氢化偶氮苯%催化剂%一氧化铅
電化學閤成%2,2＇-二氯氫化偶氮苯%催化劑%一氧化鉛
전화학합성%2,2＇-이록경화우담분%최화제%일양화연
electrochemical synthesis%2%2′-dichlorohydrazobenzene%catalyst%litharge
在反应器中采用离子交换膜法电解合成2,2＇-二氯氢化偶氮苯（DHB）,研究了三种不同的催化剂一氧化铅、四氧化三铅和硝酸铅对反应的影响,发现催化剂加入后,电解合成DHB的反应速率有很大提高,DHB收率高达95.23%;采用XRD、SEM及动态电势扫描表征三种催化剂活化后的产物,发现主要起催化作用的是一氧化铅。此外,催化剂在极板上的涂覆分散也可提高产物DHB收率。
在反應器中採用離子交換膜法電解閤成2,2＇-二氯氫化偶氮苯（DHB）,研究瞭三種不同的催化劑一氧化鉛、四氧化三鉛和硝痠鉛對反應的影響,髮現催化劑加入後,電解閤成DHB的反應速率有很大提高,DHB收率高達95.23%;採用XRD、SEM及動態電勢掃描錶徵三種催化劑活化後的產物,髮現主要起催化作用的是一氧化鉛。此外,催化劑在極闆上的塗覆分散也可提高產物DHB收率。
재반응기중채용리자교환막법전해합성2,2＇-이록경화우담분（DHB）,연구료삼충불동적최화제일양화연、사양화삼연화초산연대반응적영향,발현최화제가입후,전해합성DHB적반응속솔유흔대제고,DHB수솔고체95.23%;채용XRD、SEM급동태전세소묘표정삼충최화제활화후적산물,발현주요기최화작용적시일양화연。차외,최화제재겁판상적도복분산야가제고산물DHB수솔。
2,2′-Dichlorohydrazobenzene（DHB）was synthesized by electrochemical method in an ion exchange membrane-separate cell.The effects of different catalysts litharge,lead tetroxide and lead nitrate on the reaction rate were studied.It was found that the rate of electrolysis synthesis of DHB was increased in the presence of catalysts and the maximum yield of DHB was 95.23%.The morphology and electrochemical characteristics of electrode materials were characterized by SEM,XRD.Based on the characterization of activated products by XRD,SEM and potentiodynamic scanning,it was showed that litharge took the major action in the reaction.At the same time,coating catalyst on the cathode was helpful to improve the yield of the product DHB.
