以丙烯酸和甲醇为原料,强酸性阳离子交换树脂Amberlyst-15为催化剂,对苯二酚为阻聚剂,合成丙烯酸甲酯.考察了醇酸摩尔比、催化剂用量和温度对反应过程的影响,在实验范围内,随着温度或者催化剂用量的增加,反应速率加快,丙烯酸的转化率也不断提高.醇酸摩尔比的增加能提高丙烯酸的转化率,反应速率出现先增加后减缓的现象.与此同时,建立该催化酯化反应的Pseudo-Homogeneous(PH)的理想和非理想以及Langmuir-Hinshelwood(LH)反应动力学模型,辨识得到相应反应动力学方程.经比较,采用活度替代物质的量浓度的LH模型的平均相对偏差(MRD)最小,计算值为1.466％,最适合实际反应.
参考文献
| [1] | GAO Hongpei,BM Baochen.Factors Affecting Methacrylate Reaction[J].Chem Eng Equipm,2011,(3):60-61 (in Chinese).高红培,白宝忱.浅谈丙烯酸甲酯反应的影响因素[J].化学工程与装备,2011,(3):60-61. |
| [2] | DENG Wenyu,ZHOU Xiaoyi,MIN Ruiying.The Synthesis of Methyl Acrylate by the Esterification of Acrylic Acid[J].J Chengdu Univ Sci Technol,1984,(2):7-18(in Chinese).邓文煜,周效懿,闵瑞英.丙烯酸酯化合成丙烯酸甲酯[J].成都科技大学学报,1984,(2):7-18. |
| [3] | ZHANG Xin,GUO Ping,SONG Yang,et al.The Choice of the MA React Temperature[J].Guangdong Chem Ind,2011,(6):60-61 (in Chinese).张新,郭萍,宋阳,等.丙烯酸甲酯反应温度的选择[J].广东化工,2011,(6):60-61. |
| [4] | DENG Yong.Research and Practice to Improve the Conversion Rate of Methacrylate Reactor Acrylic[J].Acrylic Chem Appl,2007,20(4):27-31 (in Chinese).邓勇.提高丙烯酸甲酯反应器丙烯酸转化率的研究与实践[J].丙烯酸化工与应用,2007,20(4):27-31. |
| [5] | Malshe V C,Chandalia S B.Kinetics of the Liquid Phase Esterification of Acrylic Acid with Methanol and Ethanol[J].Chem Eng Sci,1977,32(12):1530-1531. |
| [6] | Qu Y X,Peng S J,Wang S,et al.Kinetic Study of Esterification of Latic Acid with Isobutanol and n-Butanol Catalyzed by Ion-exchange Resins[J].Chinese J Chem Eng,2009,17(5):773-780. |
| [7] | LU Bo,SHEN Qingyang,CHEN Zhirong,et al.Kinetics of MMA Synthesis from MAA and Methanol with Resin Acid as the Catalyst[J].Chem React Eng Technol,1995,11 (4):332-341 (in Chinese).鲁波,沈庆扬,陈志荣,等.甲基丙烯酸催化酯化反应动力学模型研究[J].化学反应工程与工艺,2007,20(4):27-31. |
| [8] | TANG Xun,XIA Tao,ZHANG Changli,et al.Synthesis of n-Butyl Acrylate by a Novel Catalyst[J].Chem Reag,2002,24(5):301-302(in Chinese).唐薰,夏涛,张长利,等.催化合成丙烯酸正丁酯[J].化学试剂,2002,24(5):301-302. |
| [9] | ZHOU Xueyong.Theoretical Analysis of Fluid-solid Adsorption Equilibrium Constants Calculated by Langmuir equation[A].International Year of Chemistry in China-the Chinese Chemical Society on Thermal Analysis Kinetic and Thermal Dynamics Conference as Jiangsu Province,the Third Thermal Analysis Technology Seminar Proceedings[C].Nanjing,2011:189-192(in Chinese).周学永.由Langmuir方程计算液-固吸附平衡常数的理论分析[A].“国际化学年在中国”——中国化学会第三届全国热分析动力学与热动力学学术会议暨江苏省第三届热分析技术研讨会论文集[C].南京,2011:189-192. |
| [10] | Fredrik S,Pekka O,Tapio S,et al.Dynamic Modelling of Catalytic Liquid-phase Reactions in Fixed Beds-Kinetics and Catalyst Deactivation in the Recovery of Anthraquinones[J].Chem Eng Sci,2006,61 (14):4528-4539. |
| [11] | Guido S,Yolanada A,Nikhil Dube,et al.Esterification of Acrylic Acid with Methanol by Reactive Chromatography:Experiments and Simulations[J].Chem Eng Sci,2006,61(16):5296-5306. |
| [12] | Schwarzer S,Hoffmann U.Experimental Reaction Equilibrium and Kinetics of the Liquid-phase Butyl Acrylate Synthesis Applied to Reactive Distillation Simulation[J].Chem Eng Technol,2002,25(10):975-980. |
| [13] | Marco M,Bernardo N,Davino G,et al.Kinetics of Liquid-Phase Esterification Catalyzed by Acidic Resins[J].Ind Eng Chem Res,1997,36(1):3-10. |
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