南京大学学报(自然科学版) ›› 2021, Vol. 57 ›› Issue (4): 654–659.doi: 10.13232/j.cnki.jnju.2021.04.014

• • 上一篇    

酯交换法制备醋酸异丁酯的动力学研究

闫瀚钊, 曹志, 张子劼, 刘颖, 周爱东, 周政()   

  1. 南京大学化学化工学院,南京,210023
  • 收稿日期:2021-04-07 出版日期:2021-07-30 发布日期:2021-07-30
  • 通讯作者: 周政 E-mail:zhouzheng@nju.edu.cn
  • 作者简介:E⁃mail:zhouzheng@nju.edu.cn
  • 基金资助:
    国家重点研发计划(2018YFB060460)

Study on the kinetics of synthesis of isobutyl acetate by transesterification

Hanzhao Yan, Zhi Cao, Zijie Zhang, Ying Liu, Aidong Zhou, Zheng Zhou()   

  1. School of Chemistry and Chemical Engineering,Nanjing University,Nanjing,210023,China
  • Received:2021-04-07 Online:2021-07-30 Published:2021-07-30
  • Contact: Zheng Zhou E-mail:zhouzheng@nju.edu.cn

摘要:

醋酸异丁酯作为一种绿色溶剂在硝化纤维、涂料、油墨、黏合剂、增香剂和药物等化工产业中有广泛的应用.采用改造的强化固定床反应器,以醋酸甲酯和异丁醇为原料,阳离子交换树脂为催化剂,合成醋酸异丁酯,并对其工艺条件进行优化,探究循环流量、催化剂装载量、反应物摩尔比以及反应温度对合成醋酸异丁酯的影响,以指导工业放大化应用.采用UNIFC基团贡献法计算各个组分的活度系数,获得了不同温度下酯交换反应的平衡常数以及标准摩尔反应焓变、标准摩尔反应熵变、标准摩尔生成吉布斯自由能等热力学数据(ΔrH0=10.86?kJ·mol-1ΔrS0=26.52?J·mol-1·K-1).最后使用拟均相模型建立了在强化固定床反应器中的反应动力学方程,正反应的活化能为75.73 kJ·mol-1,逆反应的活化能为64.87 kJ·mol-1.

关键词: 醋酸异丁酯, 阳离子交换树脂, 强化固定床反应器, 热力学, 动力学

Abstract:

As a green solvent,isobutyl acetate has a wide range of applications in chemical industries such as nitrocellulose,coatings,inks,adhesives,flavoring agents and pharmaceuticals. This article uses an intensified fixed bed reactor to synthesize isobutyl acetate with methyl acetate and isobutanol as raw materials,cation exchange resin as a catalyst,and optimizes its process conditions. The circulation flow rate,catalyst loading,and reactants are explored. The influence of molar ratio and reaction temperature on the synthesis of isobutyl acetate. This research has certain guiding significance for industrial amplification applications.The UNIFC group contribution method is used to calculate the activity coefficients of each component.The equilibrium constants of the transesterification reaction at different temperatures and thermodynamic data such as standard molar reaction enthalpy change,standard molar reaction entropy change,and standard molar reaction Gibbs free energy are calculated(ΔrH0=10.86?kJ·mol-1ΔrS0=26.52?J·mol-1·K-1). Finally,the pseudo?homogeneous model is used to establish the reaction kinetics equation in the enhanced fixed bed reactor. The activation energy of the forward and reverse reaction are 75.73 kJ·mol-1 and 64.87 kJ·mol-1.

Key words: isobutyl acetate, cation exchange resin, intensified fixed bed reactor, thermodynamics, kinetics

中图分类号: 

  • O69

图1

强化固定床反应器流程图1.预热罐;2.蠕动泵;3.固定床;4.高温循环器"

图2

循环流量对异丁醇转化率的影响"

图3

催化剂装载量对异丁醇转化率的影响"

图4

反应物料配比对异丁醇转化率的影响"

图5

反应温度对异丁醇转化率的影响"

表1

各反应温度下的活度系数和平衡常数"

T (K)313.15318.15323.15328.15333.15
γ11.1201.1171.1141.1121.109
γ21.4541.4381.4231.4091.395
γ32.0362.0232.0111.9991.987
γ41.6601.6521.6441.6361.628
Ke0.3810.3980.4220.4580.476

图6

lnKe与1/T线性关系图"

表2

各温度下Weisz?Prater准数的计算值"

T (K)CWP
313.152.69×10-2
318.154.09×10-2
323.154.55×10-2
328.155.20×10-2
333.155.79×10-2

图7

lnk与1/T关系图"

1 Mu?oz R,Montón J B,Burguet M C,et al. Separation of isobutyl alcohol and isobutyl acetate by extractive distillation and pressure?swing distillation:Simulation and optimization. Separation and Purification Technology,2006,50(2):175-183.
2 赵仑,王晓菊,白鹤龙等. 活性炭负载磷钨酸催化合成香料乙酸异丁酯. 长春师范学院学报(自然科学版),2009,28(4):32-35.
Zhao L,Wang X J,Bai H L,et al. Synthesis of spicery?isobutyl acetate by tungstophosphoric acid catalyst supported on activated carbon. Journal of Changchun Normal University (Natural Science),2009,28(4):32-35.
3 苏丽红,王蕴馨. 相转移催化剂合成乙酸异丁酯. 精细石油化工进展,2003,4(11):12-13.
Su L H,Wang Y X. Synthesis of isobutyl acetate by phase transfer catalyst. Advances in Fine Petrochemicals,2003,4(11):12-13.
4 Izci A,Uyar E,Izci E. Determination of adsorption and kinetic parameters for synthesis of isobutyl acetate catalyzed by amberlite IR?122. Chemical Engineering Communications,2008,196(1-2):
56-67.
5 Korkmaz S,Salt Y,Dincer S. Esterification of acetic acid and isobutanol in a pervaporation membrane reactor using different membranes. Industrial & Engineering Chemistry Research,2011,50(20):11657-11666.
6 Ansori A,Mahfud M. Ultrasound assisted interesterification for biodiesel production from palm oil and methyl acetate:Optimization using RSM. Journal of Physics:Conference Series,2021,1747(1):012-044.
7 García V,Pongrácz E,Phillips P S,et al. From waste treatment to resource efficiency in the chemical industry:Recovery of organic solvents from waters containing electrolytes by pervaporation. Journal of Cleaner Production,2013(39):146-153.
8 Scates M O,Webb S C. Integrated process for producing carbonylation acetic acid,acetic anhydride,or coproduction of each from a methyl acetate by?product stream. US Patent7906680,2011-03-15.
9 Fuchigami Y. Hydrolysis of methyl acetate in distillation column packed with reactive packing of ion exchange resin. Journal of Chemical Engineering of Japan,1990,23(3):354-359.
10 P?pken T,Steinigeweg S,Gmehling J. Synthesis and hydrolysis of methyl acetate by reactive distillation using structured catalytic packings:Experiments and simulation. Industrial & Engineering Chemistry Research,2001,40(6):1566-1574.
11 Komoń T,Niewiadomski P,Oracz P,et al. Esterification of acrylic acid with 2?ethylhexan?1?ol:Thermodynamic and kinetic study. Applied Catalysis A:General,2013(451):127-136.
12 Alt?okka M R,Ho?gün H L. Kinetics of hydrolysis of benzaldehyde dimethyl acetal over amberlite IR?120. Industrial & Engineering Chemistry Research,2007,46(4):1058-1062.
13 Gangadwala J,Kienle A,Stein E,et al. Production of butyl acetate by catalytic distillation:Process design studies. Industrial & Engineering Chemistry Research,2004,43(1):136-143.
14 Graca N S,Pais L S,Silva V M T M,et al. Oxygenated biofuels from butanol for diesel blends:synthesis of the acetal 1,1?dibutoxyethane catalyzed by amberlyst?15 ion?exchange resin. Industrial & Engineering Chemistry Research,2010,49(15):6763-6771.
15 Liu Y,Liu J,Yan H Z,et al. Kinetic study on esterification of acetic acid with isopropyl alcohol catalyzed by ion exchange resin. ACS Omega,2019,4(21):19462-19468.
16 Yang G D,Liu Y,Zhou Z,et al. Kinetic study of the direct hydration of turpentine. Chemical Engineering Journal,2011,168(1):351-358.
17 Chin S Y,Ahmad M A A,Kamaruzaman M R,et al. Kinetic studies of the esterification of pure and dilute acrylic acid with 2?ethyl hexanol catalysed by amberlyst 15. Chemical Engineering Science,2015(129):116-125.
18 Jagadeeshbabu P E,Sandesh K,Saidutta M B. Kinetics of esterification of acetic acid with methanol in the presence of ion exchange resin catalysts. Industrial & Engineering Chemistry Research,2011,50(12):7155-7160.
19 Chen S,Wang S,Zhou Z,et al. Study on the alkoxylation of dihydromyrcene over cation exchange resins. Industrial & Engineering Chemistry Research,2019,58(27):11871-11877.
20 朱敏亮,徐平,杜长海. 改性离子交换树脂催化合成醋酸仲丁酯. 化学工程师,2007(3):13-15.
Zhu M L,Xu P,Du C H. Synthesis of sec?butyl acetate catalyzed by modified strong acid cation ion exchange resin. Chemical Engineer,2007(3):13-15.
21 Steinigeweg S,Gmehling J. n?Butyl acetate synthesis via reactive distillation:Thermodynamic aspects,reaction kinetics,pilot?plant experiments,and simulation studies. Industrial & Engineering Chemistry Research,2002,41(22):5483-5490.
22 董新法,方利国,陈砺. 物性估算原理及计算机计算. 北京:化学工业出版社,2006.
23 Fogler H S. Elements of chemical reaction engineering. The 3rd Edition. Englewood Cliffs,USA:Prentice Hall,1999.
[1] 孔剑阳,李文飞,王炜. 腺苷酸激酶催化产物释放过程中的水化动力学研究[J]. 南京大学学报(自然科学版), 2020, 56(2): 244-252.
[2] 张勋, 石婉玲, 赵祝萱, 朱聪, 李维智, 贾叙东. 生物基聚醚胺型苯并噁嗪树脂的制备与性能研究[J]. 南京大学学报(自然科学版), 2019, 55(5): 832-839.
[3] 王广辉,杨高东,周 政,张志炳. 丙酸异龙脑酯的合成、反应热力学和反应动力学研究[J]. 南京大学学报(自然科学版), 2019, 55(3): 486-497.
[4] 刘承智1,杨高东2,周 政3*,张志炳4. 辛酸甲酯合成新工艺的研究[J]. 南京大学学报(自然科学版), 2018, 54(3): 612-621.
[5]  赵卫伟1,巫先坤3,李长浩2,陆 琛2,张 锋2*.  咪唑类离子液体对低压丙酮蒸气吸收性能研究[J]. 南京大学学报(自然科学版), 2017, 53(6): 1171-.
[6]  吴冬梅1,宁仁杰2,白 刚2,3,4*,刘治国3.  利用不同沉积温度和衬底控制压电/压磁异质结的磁电耦合系数[J]. 南京大学学报(自然科学版), 2017, 53(3): 407-.
[7]  李 永1,2,王 菲1,刘 颖1,茅丹俊1,何 欢1,杨绍贵1,孙 成1*. 长三角土壤对结晶紫的吸附研究[J]. 南京大学学报(自然科学版), 2017, 53(2): 245-.
[8] 张 舍,莫润阳*,王成会. 强磁场对镓流体中气泡振动的阻尼效应[J]. 南京大学学报(自然科学版), 2017, 53(1): 34-.
[9] 李长浩1,巫先坤2,王志祥1*,张 锋2*,张志炳2. 咪唑类离子液体吸收低压苯蒸汽的热力学研究[J]. 南京大学学报(自然科学版), 2015, 51(4): 700-706.
[10] 聂慧琴,许如银,陶 海,周 政*,张志炳*. 莰烯与2-甲基-1,3-丙二醇烷氧基化反应的研究[J]. 南京大学学报(自然科学版), 2015, 51(4): 692-699.
[11] 黄 蓓**,高 抒,汪亚平,张一乙,高建华,杨 旸,牛战胜. 水下相机在微地貌动态过程研究中的应用[J]. 南京大学学报(自然科学版), 2014, 50(5): 621-625.
[12] 肖灿俊,董锦明. 石墨烯线缺陷的电子valley滤波特性的数值模拟研究[J]. 南京大学学报(自然科学版), 2014, 50(1): 14-.
[13] 刘小鹃,杨高东,张锋,周政,林力克,张志炳. α-蒎烯水合反应动力学研究[J]. 南京大学学报(自然科学版), 2014, 50(1): 103-.
[14] 李洋;孙晓燕;. 单层颗粒模型体系融化过程中的动力学和动力学异质性[J]. 南京大学学报(自然科学版), 2013, 49(4): 524-529.
[15] ( 沙漠研究所水文科学系, 拉斯维加斯, 美国, 89119).  分数阶对流- 弥散方程和分数阶Fokker -Planck 方程的比较:动态过程及实际应用[J]. 南京大学学报(自然科学版), 2011, 47(3): 266-276.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!