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Kinetic Model for the Esterification of Methanol with Acetic Acid in the Presence of Cation-exchange Resin

Author: WangHui
Tutor: XuChunJian
School: Tianjin University
Course: Chemical Engineering
Keywords: Methyl acetate Esterification reaction Dynamics An ion exchange resin
CLC: O643.1
Type: Master's thesis
Year: 2005
Downloads: 332
Quote: 3
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Abstract


Ion exchange resin fine powder catalyst Titanium , esterification reaction of methyl acetate with a heat and mass transfer resistance is small , selective advantages . With ion-exchange resin fine powder catalyst Titanium methanol esterification reaction kinetics . Experimental Study of the stirring speed, the impact of the particle diameter of the ion exchange resin on the reaction conversion rate , the experimental results show that : the outer diffusion effect , can be ignored when the stirring speed is greater than 500r/min . When the catalyst particle diameter is less than 0.6mm , the catalyst particle diameter on the conversion rate no effect when the catalyst particle diameter of 0.6mm-1.25mm catalyst , the conversion rate is significantly decreased . Macroporous cation as a catalyst in the elimination of internal , external diffusion effects under the conditions of acetic acid and methanol synthesis in a batch autoclave experimental study of the acetate , and the quasi - homogeneous model by fitting the experimental data and the kinetic equation of the reaction process . The kinetic equation considering the impact of the reaction temperature , amount of catalyst , acid and alcohol than other factors . Accelerate the reaction rate decreases with increasing temperature , both to the Arrhenius equation , the activation energy of the reaction is 50.31kJ/mol , the reaction rate and the catalyst concentration , a linear relationship within the experimental range , the reaction rate and the catalyst concentration . The application of the above reaction kinetics equation for the esterification process simulation , simulation results and experimental results are in good agreement . The final simulated esterification of the appropriate reaction conditions , and to provide a basis for process design .

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Chemical kinetics
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