Kinetics study of esterification of acetic acid with isobutanol in the presence of amberlite catalyst

Altıokka, Mehmet Rıza; Çıtak, Alime

doi:10.1016/s0926-860x(02)00381-2

Cited by 160 publications

(105 citation statements)

References 12 publications

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“…Although, the catalytic activity of these homogeneous catalysts is high, they suffer from several drawbacks, such as their corrosive nature, the existence of side reactions, and the fact that the catalyst cannot be easily separated from the reaction mixture. [29][30][31][32] The use of reusable acid catalysts, offer an alterna- The reactions were carried out as described below Table 1. tive and have received a lot of attention in the past few years. [33][34][35][36] It is worth mentioning that heteropolyoxometallate catalysts could be used as recyclable catalysts.…”

Section: Resultsmentioning

confidence: 99%

Efficient Protection of Alcohols with Carboxylic Acids Using a Variety of Heteropolyoxometallates as Catalysts, Studying Effective Reaction Parameters

Tayebee¹,

Cheravi²

2009

Bulletin of the Korean Chemical Society

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Esterification is an important class of reactions in the preparation of perfumery and flavor chemicals, wherein homogeneous, solid acidic, and superacidic catalysts are normally used. Now, an efficient and selective protocol for protection of various functionalized alcohols employing carboxylic acids as protecting agents is realized through the catalytic mediation of simple heteropolyoxometallates. In this methodology, water is the only by-product and notably the aspect of effluent treatments does not arise. The advantages include the operational simplicity, recycle ability of the catalyst and mild reaction conditions. The present catalytic system may be a potential candidate not only for laboratory practice but also for commercial applications and offers an environmentally safer alternative to the existing processes.

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Section: Resultsmentioning

confidence: 99%

Efficient Protection of Alcohols with Carboxylic Acids Using a Variety of Heteropolyoxometallates as Catalysts, Studying Effective Reaction Parameters

Tayebee¹,

Cheravi²

2009

Bulletin of the Korean Chemical Society

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“…Previous studies pointed that external diffusion does not usually control the overall rate in the reactions catalyzed by ion exchanges resin unless the agitation speed is very low or the reaction mixture is very viscous and intraparticle diffusion resistances of the reactant in the ion exchange resins are not so important [6][7][8]18]. Hence all the experiments were conducted with the ion exchange resin that was supplied by manufacture (Rohm and Hass Co.) and at a fixed 500 rpm for all the experiments.…”

Section: Elimination Of Mass Transfer Resistancementioning

confidence: 99%

Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin

Toor

Sharma

Kumar

et al. 2011

Bull. Chem. React. Eng. Catal.

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Esters are an important pharmaceutical intermediates and very useful perfumery agents. In this study the esterification of acetic acid with n-butanol and iso-butanol over an acidic cation exchange resin, Amberlyst 15 were carried out. The effects of certain parameters such as temperature, catalyst loading, initial molar ratio between reactants on the rate of reaction were studied. The experiments were conducted in a stirred batch reactor in the temperature range of 351.15 K to 366.15K.Variation of parameters on rate of reaction demonstrated that the reaction was intrinsically controlled.The activation energy for the esterification of acetic acid with n-butanol and iso butanol is found to be 28.45 k J/mol and 23.29 kJ/mol respectively. ©2011 BCREC UNDIP. All rights reserved.

(Received: 16th December 2010, Revised: 19th March 2011; Accepted: 7th April 2011)

[How to Cite: A.P. Toor, M. Sharma, G. Kumar, and R. K. Wanchoo. (2011). Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin. Bulletin of Chemical Reaction Engineering and Catalysis, 6(1): 23-30. doi:10.9767/bcrec.6.1.665.23-30]

[How to Link / DOI: http://dx.doi.org/10.9767/bcrec.6.1.665.23-30 ]

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“…Equations (8)- (10) show the temperature dependency of the constants appearing in the reaction rate expression depending on Eley-Rideal model approach (Equation (2)). The activation energy value decreased from 59.3 kJ=mol, without using catalyst (Altiokka and Ç itak, 2003), to 50.5 kJ=mol by using the acidic resin Amberlite IR-122 as the catalyst in the present study. Thus, it was concluded that the acidic resin Amberlite IR-122 can be used as a suitable catalyst for the esterification reaction of isobutyl alcohol with acetic acid.…”

Section: Discussionmentioning

confidence: 54%

“…be negligible in the literature (Dassy et al, 1994;Bart et al, 1996;Altiokka and Ç itak, 2003). Depending on the Eley-Rideal model approach, the reaction rate expression can be given empirically by the relationship:…”

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confidence: 99%

Determination of Adsorption and Kinetic Parameters for Synthesis of Isobutyl Acetate Catalyzed by Amberlite Ir-122

Izci

Uyar

Izci

2008

Chemical Engineering Communications

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In the present study, the kinetics of esterification of acetic acid with isobutanol was studied by using Amberlite IR-122 as an acid catalyst. Experiments were carried out in a stirred batch reactor in dioxane at different temperatures (323 to 348 K) under atmospheric pressure. The equilibrium constant was found to be constant as 4 in the temperatures ranging from 323 to 367 K. The possible mechanism of reaction was mathematically treated using the theories of the Eley-Rideal model based on inhibition by water and isobutanol on the resins. The reaction rate constants and the adsorption coefficients for isobutanol and water were determined from the experimental data at the same temperature intervals. Furthermore, the activation energy of the esterification reaction was found to be 50.5 kJ=mol. The heat of adsorption for isobutanol and water was also calculated as À50.9 kJ=mol and À18.9 kJ=mol, respectively.

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Kinetics study of esterification of acetic acid with isobutanol in the presence of amberlite catalyst

Cited by 160 publications

References 12 publications

Efficient Protection of Alcohols with Carboxylic Acids Using a Variety of Heteropolyoxometallates as Catalysts, Studying Effective Reaction Parameters

Efficient Protection of Alcohols with Carboxylic Acids Using a Variety of Heteropolyoxometallates as Catalysts, Studying Effective Reaction Parameters

Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin

Determination of Adsorption and Kinetic Parameters for Synthesis of Isobutyl Acetate Catalyzed by Amberlite Ir-122

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