Catalyzed Amintion For The Synthesis Of Dodecyldimethylamine

Tertiary amine occupies a key position in the oleo industry as they are used in the production of a variety of surface active agents for personal care and household marketing.The catalytic amination of aliphatic alcohol with dimethylamine represents an economical way for the synthesis of dodecyldimethylamine,but there is still a great space for improvement in terms of activity and selectivity of Cu-based or Cu/Ni-based solid catalyst.Through the pilot test of a kettle reactor,the properties of different Cu based solid catalysts were analyzed.Cu 60/8P?13MDH051 and Cu zirconia were tested,with the best one as Cu 60/8P for conversion rate 96%,selectivity 90%and yield 86.4%.Based on the selectivity,conversion rate and yield,the effects of reaction temperature,catalyst type and catalyst content on the reaction were investigated.The optimization results are 220? and catalyst content 1.5%The thermodynamic equation of reaction was established,the reaction activation energy was determined as E=18407.63J/mol,A=0,15 s-1,R=0.997.The adsorption dehydration process was simulated and a mathematical model of continuous adsorption was established.The error by Short-cut Calculation for the adsorption process less than 2.2%,prediction error for height of column less than±5%.By lower the flow rate for two times,the breakthrough time can be prolonged for 17.8%without considering the capacity of the recycling gas amount.