[1]潘学林,单玉华,任海永,等.乙酸与异丁酸催化合成甲基异丙基酮催化剂[J].常州大学学报(自然科学版),2011,(02):11-15.
　PAN Xue-lin,SHAN Yu-hua,REN Hai-yong,et al.Study of the Catalysts for Preparation of Methyl Isopropyl Ketonefrom Acetic Acid and Isobutyric Acid[J].Journal of Changzhou University(Natural Science Edition),2011,(02):11-15.
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乙酸与异丁酸催化合成甲基异丙基酮催化剂()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2011年02期
页码:
11-15
栏目:
出版日期:
2011-03-30

文章信息/Info

Title:
Study of the Catalysts for Preparation of Methyl Isopropyl Ketonefrom Acetic Acid and Isobutyric Acid
作者:
潘学林; 单玉华; 任海永; 鲁墨弘; 李明时
常州大学 江苏省精细石油化工重点实验室,江苏 常州 213164
Author(s):
PAN Xue-lin; SHAN Yu-hua; REN Hai-yong; LU Mo-hong; LI Ming-shi
Jiangsu Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164,China
关键词:
甲基异丙基酮;  异丁酸;  乙酸;  酮化反应;  催化剂
Keywords:
Methyl isopropyl ketone;  isobutyric acid;  acetic acid;  ketonization;  supported catalyst
分类号:
TQ 224.22
文献标志码:
A
摘要:
采用浸渍法制备了一系列负载型催化剂,用于催化乙酸(AA)与异丁酸(IBA)酮化反应合成甲基异丙基酮(MIPK)。通过催化剂性能评价,筛选出较好的催化剂CeO2-TiO2/SiO2。用SEM、XRD、BET等方法对CeO2-TiO2/SiO2进行了表征。分别考察了不同反应温度与时间、原料组成、及进料空速等因素对反应活性和选择性的影响。结果表明:CeO2-TiO2/SiO2催化剂可有效催化AA与IBA催化合成MIPK,并且在450 ℃获得MIPK最高收率,450 ℃以后催化活性呈下降趋势。控制原料液相进料空速LHSV为0.5 h-1,IBA与AA进料物质的量比为1:1.7,水占原料的质量分数为10%,该催化剂于450 ℃连续反应30 d后,异丁酸转化率由第1 d的96.4%下降为82.6%,MIPK的收率由第1 d的79.2%下降为70.5%。
Abstract:
By use of impregnation method, a series of supported catalysts had been prepared and their catalytic properties evaluated in the ketonization of isobutyric acid(IBA)and acetic acid(AA)to yield methyl isopropyl ketone(MIPK).The suitable catalyst CeO2-TiO2/SiO2 was characterized by SEM, XRD, and BET in detail. The effects of reaction conditions, such as temperature, time, feed ratio and space velocity in CeO2-TiO2/SiO2 catalyzed reaction onIBA conversion and MIPK selectivity were investigated systematically. The results showed that: CeO2-TiO2/SiO2 is an effective catalyst in the catalyzed reaction of IBA and AA to produce MIPK with highest yield at 450 ℃ and a downward trend above 450 ℃. At 450 ℃,feed LHSV 0.5 h-1,n(IBA):n(AA)as 1:1.7, containing 10% water, the reaction carried on for30 days successively and the conversion of IBA and the yield of MIPK dropped from 96.4% and 79.2% at the first day, to 82.6% and 70.5% at the thirty day respectively, which showed this catalyst had desirable stability.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:潘学林(1985-),男,江苏扬州人,硕士生; 通讯联系人:单玉华。
更新日期/Last Update: 2011-03-30