石油炼制与化工

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异丙叉丙酮气相催化加氢制备甲基异丁基甲醇1

童孟良,王罗强,陈东旭,周芝兰   

  1. 湖南化工职业技术学院
  • 收稿日期:2010-03-23 修回日期:1900-01-01 出版日期:2010-11-12 发布日期:2010-11-12
  • 通讯作者: 童孟良

PREPARATION OF METHYL ISOBUTYL CARBINOL BY CATALYTIC HYDROGENATION OF MESITYL OXIDE IN GAS PHASE

  • Received:2010-03-23 Revised:1900-01-01 Online:2010-11-12 Published:2010-11-12

摘要: 研究了在Mn改性Cu-Zn-Al催化剂上异丙叉丙酮气相催化加氢制备甲基异丁基甲醇的工艺。考察了催化剂组成以及反应条件对异丙叉丙酮转化率和甲基异丁基甲醇选择性的影响。采用XRD、TPR和BET表面积方法对Cu-Zn-Al-Mn催化剂进行了表征。结果表明,加氢反应的最佳工艺条件为:催化剂中 Mn质量分数5%,n(Cu)/n(Zn)=1.2; 反应温度160 ℃,n(H2)/n(异丙叉丙酮)=3.5,加料速率90.0 mL/h。在最佳反应条件下,异丙叉丙酮转化率达到99.4%,甲基异丁基甲醇选择性可达96.6%。

关键词: 异丙叉丙酮, 气相, 加氢, 甲基异丁基甲醇

Abstract: The process of preparing methyl isobutyl carbinol by catalytic hydrogenation of mesityl oxide in gas phase over Mn-modified Cu-Zn-Al catalyst was studied. The influence of catalyst compositions and the reaction conditions on the conversion of mesityl oxide and the selectivity to methyl isobutyl carbinol was investigated. The Cu-Zn-Al-Mn catalysts were characterized by XRD, TPR and BET method. Results showed that under the optimum conditions of using a catalyst with Mn mass fraction of 5% and Cu/Zn molar ratio of 1.2, a reaction temperature of 160℃, a H2/mesityl oxide molar ratio of 3.5 and mesityl oxide feeding rate of 90.0 mL/h, the conversion of mesityl oxide reached 99.4% and the selectivity to methyl isobutyl carbinol was 96.6%.

Key words: mesityl oxide, gas phase, hydrogenation, methyl isobutyl carbinol