第 41 卷第 4 期 |  | Vol. 41 No. 4 | 2011 年 8 月 | Aug 2011 |
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所屬欄目:功能材料
環(huán)己醇催化胺化制備N(xiāo),N-二甲基環(huán)己胺 |
謝自強,劉振鵬
(浙江新化化工股份有限公司,浙江 建德 311600) |
摘 要:采用浸漬法制備Cu-Co-Ti-Mn-Cr/Al2O3 催化劑,以環(huán)己醇和二甲胺為原料,在固定床反應器中考察了N,N-二甲基環(huán)己胺的連續生產(chǎn)工藝。通過(guò)對操作工藝參數優(yōu)化,控制環(huán)己醇液態(tài)空速為0.5 h-1,進(jìn)料比n(二甲胺)∶n(環(huán)己醇)=2∶1,反應壓力1.0 MPa 氫氣,反應溫度160℃,環(huán)己醇單程轉化率達到81%,N,N -二甲基環(huán)己胺選擇性達到93%。反應連續運行240 h,裝置狀況穩定,該路線(xiàn)具有較好的工業(yè)實(shí)用價(jià)值。 |
關(guān)鍵詞:環(huán)己醇;二甲胺;N,N-二甲基環(huán)己胺;固定床催化 |
中圖分類(lèi)號:TQ236 文獻標識碼:B 文章編號:1009-9212(2011)04-0058-04 |
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Catalytic Amination of Cyclohexanol to N,N-Dimethylcyclohexylamine |
XIE Zi-qiang,LIU Zhen-peng
(Zhejiang Xin Hua Chemical Co.,Ltd., Jiande 311600,China) |
Abstract:The continuous preparation of N,N-dimethylcyclohexylamine(DCA) from cyclohexanol and dimethylamine(DMA) was investigated in a fix bed reactor,using Cu-Co-Ti-Mn-Cr/Al2O3 as the catalyst which was prepared by dipping method. Under optimized reaction conditions with the molar ratio of 2 of DMA to cyclohexanol,the conversion of cyclohexanol reached 81% and the selectivity of DCA reached 93% in a single pass,under 1.0 MPa H2,160℃,at LHSV=0.5 h-1. The reaction run smoothly for 240 h. This process was applicable for industrial production. |
Key words:cyclohexanol;dimethylamine;N,N-dimethylcyclohexylamine;fixed bed catalysis |
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作者簡(jiǎn)介:謝自強(1975-),男,湖南邵陽(yáng)人,工程師,從事化工工程與有機胺等精細化學(xué)品研究。(E-mail:jdxzq@sohu.com)
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收稿日期: 2011-07-1
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