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[1]杨恒东,李有林,崔咪芬,等.不同载体对Cu系催化剂催化醋酸异丙酯加氢工艺的影响[J].南京工业大学学报(自然科学版),2016,38(02):100-106.[doi:10.3969/j.issn.1671-7627.2016.02.019]
 YANG Hengdong,LI Youlin,CUI Mifen,et al.Effects of supports of Cu-based catalysts on hydrogenation of isopropyl acetate to alcohols[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(02):100-106.[doi:10.3969/j.issn.1671-7627.2016.02.019]
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不同载体对Cu系催化剂催化醋酸异丙酯加氢工艺的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年02期
页码:
100-106
栏目:
出版日期:
2016-04-10

文章信息/Info

Title:
Effects of supports of Cu-based catalysts on hydrogenation of isopropyl acetate to alcohols
文章编号:
1671-7627(2016)02-0100-07
作者:
杨恒东1李有林1崔咪芬1费兆阳12陈献1汤吉海1乔旭12
1.南京工业大学 化工学院,江苏 南京 210009; 2.南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
YANG Hengdong1LI Youlin1CUI Mifen1FEI Zhaoyang12CHEN Xian1TANG Jihai1QIAO Xu12
1.College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China; 2.State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
载体 Cu系催化剂 醋酸异丙酯 加氢 乙醇 异丙醇
Keywords:
carrier Cu-based catalyst isopropyl acetate hydrogenation ethanol isopropanol
分类号:
TQ032.4
DOI:
10.3969/j.issn.1671-7627.2016.02.019
文献标志码:
A
摘要:
本文以醋酸异丙酯为原料催化加氢,同时制备乙醇和异丙醇。用共沉淀法制备SiO2、Al2O3、ZrO2和TiO2 4种不同载体负载的Cu系催化剂,分别考察它们的催化反应性能; 借助N2吸附-脱附仪、X线衍射仪(XRD)、H2程序升温还原(H2-TPR)、N2O氧化滴定及NH3程序升温脱附(NH3-TPD)等表征手段,分析对比4种载体对Cu的分散性、CuO-载体之间的协同作用、表面酸性等的影响及最终对反应结果的影响。结果表明:Cu/SiO2表现出较好的催化活性且主产物的选择性最高; Cu/ZrO2中因CuO与ZrO2间的协同作用促进了Cu的高度分散,因而活性最高,但较强的酸性降低了主产物乙醇的选择性; Cu/TiO2和Cu/Al2O3的催化活性以及主产物选择性都明显偏低。在Cu/SiO2催化剂上进行了醋酸异丙酯加氢反应的工艺优化,筛选出了最佳工艺条件:温度290 ℃,反应压力6 MPa,氢酯进料摩尔比30,质量空时96 g·h/mol。在最佳条件下,醋酸异丙酯的转化率达96%,乙醇的选择性达94%,异丙醇的选择性达95%。
Abstract:
Ethanol and isopropanol were prepared from the hydrogenation of isopropyl acetate on copper-based catalysts with different supports(SiO2, Al2O3, ZrO2, TiO2)prepared by ammonia co-precipitation method.The catalytic performances and properties were characterized by N2 adsorption-desorption,X-ray diffraction(XRD),H2 temperature programmed reduction(H2-TPR),N2O oxidation titration, and NH3 temperature programmed desorption(NH3-TPD).The effects of different supports on copper dispersion,the synergy between CuO-carrier,surface acidity, and the ultimate effects on the reaction were investigated.Results showed that Cu/SiO2 catalyst exhibited the highest selectivity to the ethanol and the isopropanol, and higher catalytic activity; Cu/ZrO2 exhibited the best catalytic activity due to the synergy between CuO and ZrO2, thus promoting the high dispersion of Cu,while the strong acid resulted in the reduction of ethanol selectivity; Cu/TiO2 and Cu/Al2O3 exhibited the lower activity and selectivity to the ethanol and the isopropanol.The suitable process conditions were obtained on Cu/SiO2 catalyst 290 ℃,the pressure of 6.0 MPa,the molar ratio of hydrogen and isopropyl acetate of 30,and the space-time based on the catalyst mass of 96 g·h/mol.Under these conditions,the conversion of isopropyl acetate was 96%,the selectivities of ethanol and isopropanol were 94% and 95%,respectively.

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备注/Memo

备注/Memo:
收稿日期:2015-02-27
作者简介:杨恒东(1989—),男,江苏盐城人,硕士,主要研究方向为绿色化工及工业催化; 崔咪芬(联系人),教授,E-mail:mfcui@njtech.edu.cn.
引用本文:杨恒东,李有林,崔咪芬,等.不同载体对Cu系催化剂催化醋酸异丙酯加氢工艺的影响[J].南京工业大学学报(自然科学版),2016,38(2):100-106..
更新日期/Last Update: 2016-03-20