管式反应器合成N,N-二甲基正丁胺  

Synthesis of N,N-dimethyl-n-butylamine with tubular reactor

作　　者：张旭[1] 张涛[1] 陈小祥[1] 闫浩[1] 罗明[1] 钱超[1] 陈新志[1] 

机构地区：[1]浙江大学化学工程与生物工程学系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2009年第9期1684-1686,1738,共4页Journal of Zhejiang University：Engineering Science

基　　金：国家"十一五"科技支撑计划资助项目(2007BAI34B07);国家自然科学基金资助项目(20776127);浙江省自然科学基金杰出青年团队资助项目(Y4090045;R4090358);浙江大学第二期国家创新性实验计划资助项目(1020);浙江大学第十一期SRTP资助项目(1118)

摘　　要：为了提高N，N-二甲基正丁胺合成方法的经济性与环境友好性，采用以正丁胺与甲醇为主要原料进行催化胺化的路线，原子利用率较高．用浸渍法制备了磷酸改性的γ-Al2O3负载活性金属的催化剂，在管式固定床反应器中考察了催化剂活性成分及反应条件对合成N，N-二甲基正丁胺的影响．结果表明，γ-Al2O3上负载活性组分含Co和Ni质量分数分别为30％～31％及9％～10％的催化剂具有较满意的选择性和活性．在较合适的反应工艺条件：压力为0．3MPa，温度为160℃，体积空速为0．3h，进料甲醇和正丁胺的物质的量比为6：1下，原料正丁胺的转化率达到81．7％，目标产物N，N-二甲基正丁胺的选择性达到72．9％．The catalytic amination of n-butylamine and methanol, which is high in conducted to produce N, N-dimethyl-n-butylamine economically and environmentall atom utilization, was y. The catalysts were prepared by impregnation of Cu, Ni, Co on the phosphoric acid treated γ-Al2O3 and the processes were studied in a tubular fixed-bed reactor. The characteristics of the catalysts and the reaction conditions were observed experimentally. Results showed that the catalyst with Co mass fraction of 30% -31% and Ni mass fraction of 9%-10% performed better in the amination. The conversion of 81.7% of the n-butylamine and the selectivity of 72.9% for the desired product were obtained under the proper reaction conditions at 0. 3 MPa, 160℃, 0.3 h^-1 and molar ratio of methanol ： butylamine=6 ： 1.

关 键 词：N N-二甲基正丁胺 正丁胺 甲醇 催化剂 管式固定床反应器 

分 类 号：TQ032-41[化学工程]