催化裂解合成N,N-二甲基丙烯酰胺新工艺研究  

Study on a new process of catalytic pyrolysis for preparation of N,N-dimethylacrylamide

作　　者：韩非[1] 李郁锦[1] 高建荣[1] 方频[1] 浦忠威[1] 

机构地区：[1]浙江工业大学绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《浙江工业大学学报》2008年第3期265-267,共3页Journal of Zhejiang University of Technology

摘　　要：N,N-二甲基丙烯酰胺(DMAA)是一种重要的精细化工产品,目前其在诸多领域得到日益广泛的应用.研究了以3-(N,N-二甲氨基)-N,N-二甲基丙酰胺(DMDA)为原料,通过筛选不同的酸为催化剂,催化裂解合成DMAA的新工艺.重点考察了催化剂及其用量、反应温度、反应压力、反应时间等工艺参数对反应转化率的影响,并优化选择了较优工艺参数组合:催化剂质子酸B质量分数为2%,反应温度180℃,反应时间4 h,反应压力47 880 Pa.裂解反应收率达84.2%.N,N-dimethylpropanamide （DMAA） is one of important fine chemicals widely used in many application fields. DMAA was synthesized using 3-（dimethylamino）-N,N-dimethyl-propanamide （DMDA） as a raw material and proton acid B as a catalyst. The effects of main reaction conditions on the conversion of DMAA were examined. The optimum process parameters were selected as follows： proton acid B concentration was 2%, reaction temperature was 180℃, pressure was 47 880 Pa, and reaction time was 4 h. The yield of the product DMAA was 84.2% under the above conditions.

关 键 词：N N-二甲基丙烯酰胺 裂解 催化剂 工艺优化 

分 类 号：TQ073[化学工程]