Development of kinetic models for acid‐catalyzed methyl acetate formation reaction: Effect of catalyst concentration and water inhibition

Ganesh, Botla; Rani, K. Yamuna; Satyavathi, B.; Venkateswarlu, Ch.

doi:10.1002/kin.20555

Cited by 20 publications

(20 citation statements)

References 12 publications

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“…However, as the reaction temperature increases, the rate of esterification reaction becomes faster. The present findings are in agreement with Ganesh et al , who also reported an increase in the rate of conversion of acetic acid with an increase in temperature.…”

Section: Resultssupporting

confidence: 94%

“…From Eqn , it is possible to determine the K e values at different temperatures. The literature reported that the equilibrium constant ( K e ) values, based on concentration model, are in the range of 3.9–9.0 for the esterification of acetic acid with methanol reaction, as given in Ganesh et al , Jagadeesh babu et al and Tsai et al From the experiments, we obtained K e as 4.95.…”

Section: The Kinetic Modelsupporting

confidence: 52%

“…Elugu et al proposed a similar dependence and applied it for the intensification of ester production in a continuous reactor. The kinetic models for acid‐catalyzed methyl acetate production using a homogeneous catalyst in the batch reactor were investigated . They observed that the rate constant was affected by the concentration of the catalyst, and the reaction rate increased with an increase in the catalyst concentration.…”

Section: Introductionmentioning

confidence: 99%

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Comparative kinetics of esterification of methanol–acetic acid in the presence of liquid and solid catalysts

Mekala

Goli

2014

Asia-Pacific J Chem Eng

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Esterification of acetic acid with methanol to produce methyl acetate in an isothermal stirred batch reactor has been studied. Sulfuric acid was used as a liquid catalyst, and Indion-180, Indion-190 and Amberlyst-16wet ion exchange resins were used as solid catalysts. The feed mole ratio was varied from 1 : 1 to 1 : 4. The reaction temperatures were varied from 305.15 to 333.15 K for sulfuric acid as catalyst and 323.15 to 353.15 K for the solid catalysts. The catalyst concentrations were used in the range of 1% to 5%, for the sulfuric acid catalyst, and 0.01 to 0.05 g/cc, for the solid catalysts. The effect of temperature, catalyst concentration, agitation speed, size of catalyst particle and reactant concentration on the acetic acid conversion was investigated. A second-order kinetic rate equation was proposed to fit the experimental data. For both forward and backward reactions, the activation energies were estimated from Arrhenius plots. The reaction rate increased with catalyst concentration and temperature for both the liquid and solid catalysts. The acetic acid conversion was found to increase with increases in acetic acid to methanol ratio in the feed. The developed kinetic rate equation was used for the simulation of reactive distillation process, in our laboratory column.

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Section: Resultssupporting

confidence: 94%

Section: The Kinetic Modelsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

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Comparative kinetics of esterification of methanol–acetic acid in the presence of liquid and solid catalysts

Mekala

Goli

2014

Asia-Pacific J Chem Eng

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“…They concluded that heterogeneous catalysts gave poor conversions due to the diffusion problem of fatty acid into the pores of the catalyst. Henceforth, a lot of reports suggested that the homogeneous catalyst induces more conversion compared to heterogeneous catalyst.…”

Section: Introductionmentioning

confidence: 99%

Homogeneous and Heterogeneous Catalyzed Esterification of Acrylic Acid with Ethanol: Reaction Kinetics and Modeling

Jyoti

Keshav

Anandkumar

et al. 2018

Int J of Chemical Kinetics

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Kinetics of esterification of acrylic acid with ethanol in the presence of homogeneous (H2SO4, HCl, p‐TSA, HI) catalysts as well as heterogeneous catalysts (Dowex 50WX, Amberlyst 15) was studied. The effects and performance of these catalysts on the conversion of acrylic acid were evaluated. In the kinetics of homogeneous catalyzed reaction, both concentration and activity‐based model were employed. Activity coefficients were predicted by the Universal Functional group Contribution (UNIFAC) method to consider nonideal behavior of the liquid phase. The heterogeneous catalyzed reaction mechanisms were developed using Eley–Rideal theory. The model results were compared with the experimental results and were in good agreement. The temperature dependency of the constants, reaction enthalpy, and entropy, and activation energy were determined. The conversion of acrylic acid was obtained as 63.2%, 61.02%, 53.3%, 21.4%, 34.96%, and 14.84% for H2SO4, p‐TSA, HCl, HI, Dowex 50WX, and Amberlyst 15, respectively, under process temperature of 70°C, reactant molar ratio of 1:1, and catalyst concentration of 2% (v/v) for homogeneous and 2.17 g for heterogeneous catalyst. These outcomes provide an approach to understand the significant effect of each catalyst on the esterification kinetics of acrylic acid and ethanol.

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“…The objective for implementation of these options is to achieve maximum conversion with high methyl acetate purity. The equilibrium constant for this reaction is about 5.0 [28] and it is independent of the temperature. The equilibrium conversion of the reaction is 69 %, when equimolar (1:1) quantities of reactants are used (base case), and the product purity corresponds to a methyl acetate weight fraction of only 0.55.…”

Section: Methyl Acetate Production Case Studymentioning

confidence: 96%

Experimental analysis in different batch operating units for process intensification: methyl acetate production case study

et al. 2014

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In the present study, different process intensification options in batch mode are considered for a class of reactions, and are evaluated with respect to enhancement in conversion and product purity considering methyl acetate formation reaction as an experimental case study. The options explored include operation in different batch operating units and use of different molar ratios of reactants. Integrated reaction and separation is considered in two ways, namely by simple reactive batch distillation, and by multi-stage reactive batch distillation with partial reflux. It is observed that conversions beyond equilibrium conversion are achieved by process intensification, and relatively purer products are obtained compared to the base case. The purity and conversions in the multi-stage column are found to be higher than with simple distillation. Increasing the molar ratio of methanol in the reaction feed mixture is found to yield high conversions at the expense of purity of methyl acetate in the product. The present study considers a typical case of an esterification reaction with azeotropic mixtures, and the analysis is applicable to a class of reactions satisfying the criteria mentioned.

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Development of kinetic models for acid‐catalyzed methyl acetate formation reaction: Effect of catalyst concentration and water inhibition

Cited by 20 publications

References 12 publications

Comparative kinetics of esterification of methanol–acetic acid in the presence of liquid and solid catalysts

Comparative kinetics of esterification of methanol–acetic acid in the presence of liquid and solid catalysts

Homogeneous and Heterogeneous Catalyzed Esterification of Acrylic Acid with Ethanol: Reaction Kinetics and Modeling

Experimental analysis in different batch operating units for process intensification: methyl acetate production case study

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