Continuous synthesis of N,N-dicyanoethylaniline in microreactors:Reaction kinetics and process intensification  

作　　者：Pengcheng Lu Yaoyao Li Jianjun Zhang Yuchao Zhao Qingqiang Wang Ying Chen Nan Jin Xiugang Yu 

机构地区：[1]Shandong Provincial Key Laboratory of Chemical Engineering and Process,College of Chemistry and Chemical Engineering,Yantai University,Yantai 264005,China [2]Shandong ANOKY Chemical Technology Research Co.,Ltd.,Yantai 265601,China [3]Yantai Guobang Chemical Machinery Technology Co.,Ltd.,Yantai 264000,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第8期95-105,共11页中国化学工程学报（英文版）

基　　金：the financial supports from National Natural Science Foundation of China(22378344,22208278);Natural Science Foundation of Shandong Province(ZR2023MB120,ZR2023QB152);Youth Innovation Team Plan of Shandong Province(2022KJ270)。

摘　　要：Cyanoethylation of phenylamine is one of the important steps for the production of dicyanoethyl-based disperse dyes.However,the exothermic nature of this reaction and the inherent instability of intermittent dynamic operation pose challenges in achieving both high safety and reaction efficiency.In this study,a continuous cyanoethylation of phenylamine for synthesizing N,N-dicyanoethylaniline in a microreactor system has been developed.By optimizing the reaction conditions,the reaction time was significantly reduced from over 2 h in batch operation to approximately 14 min in the microreactor,while high conversion and selectivity were maintained.Based on the reaction network constructed,the reaction kinetics was established,and the kinetic parameters were then determined.These findings provide valuable insights into a controllable cyanoethylation reaction,which would be helpful for the design of efficient processes and optimization of reactors.

关 键 词：Cyanoethylation MICROREACTOR KINETICS N N-dicyanoethylaniline Optimization Safety 

分 类 号：TQ613.24[化学工程—精细化工]