Isopropyl Acetate | ScienceGate

Kinetic studies on esterification of acetic acid with isopropyl alcohol in presence of novel solid catalyst

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2020-0141 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Mallaiah Mekala

Keyword(s):

Acetic Acid ◽

Kinetic Model ◽

Isopropyl Alcohol ◽

Frequency Factor ◽

Activation Energies ◽

Catalyst Loading ◽

Solid Catalyst ◽

Heat Of Reaction ◽

Resin Catalyst ◽

Isopropyl Acetate

AbstractThe reaction of isopropyl alcohol with acetic acid was carried out in an isothermal batch reactor in presence of solid resin catalyst to produce isopropyl acetate and water. A novel solid resin catalyst Indion 140 was used in the present study. The temperature of reaction mixture was maintained in the range of 333.15 – 363.15 K. The effects of reaction temperature, catalyst loading, mole ratio, size of catalyst, agitation speed were investigated on acetic acid conversion. Further, pseudo-homogeneous kinetic model was developed for the catalyzed reaction. The forward reaction rate constants and activation energies were determined from the Arrhenius plot. The forward and backward activation energies are found to 53,459 J/mol and 54,748 J/mol, respectively. The heat of reaction is −1.289 kJ/mol with Indion 140 catalyst. The mathematical equation was developed for frequency factor as function of the catalyst loading and found that it follows a linear relationship between frequency factor and catalyst loading. The simulations were performed for pseudo homogeneous kinetic model and found that the model is able to predict the experimental data very well. The developed kinetic equation is useful for the simulation of a reactive distillation column for the synthesis of isopropyl acetate.

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Vapour phase reaction of ethylbenzene with isopropyl acetate over mesoporous Al-MCM-41 molecular sieves

Journal of Molecular Catalysis A Chemical ◽

10.1016/j.molcata.2004.02.014 ◽

2004 ◽

Vol 216 (1) ◽

pp. 121-130 ◽

Cited By ~ 8

Author(s):

S Udayakumar ◽

A Pandurangan ◽

P.K Sinha

Keyword(s):

Molecular Sieves ◽

Vapour Phase ◽

Phase Reaction ◽

Isopropyl Acetate ◽

Mcm 41

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Enzymatic Synthesis of Isopropyl Acetate by Immobilized Bacillus cereus Lipase in Organic Medium

Enzyme Research ◽

10.4061/2011/919386 ◽

2011 ◽

Vol 2011 ◽

pp. 1-7 ◽

Cited By ~ 21

Author(s):

Madan Lal Verma ◽

Wamik Azmi ◽

Shamsher Singh Kanwar

Keyword(s):

Acetic Acid ◽

Bacillus Cereus ◽

Water Activity ◽

Molecular Sieves ◽

Immobilized Lipase ◽

Molar Ratio ◽

Ester Synthesis ◽

Initial Water ◽

Isopropyl Acetate ◽

Mg Addition

Selective production of fragrance fatty acid ester from isopropanol and acetic acid has been achieved using silica-immobilized lipase of Bacillus cereus MTCC 8372. A purified thermoalkalophilic extracellular lipase was immobilized by adsorption onto the silica. The effects of various parameters like molar ratio of substrates (isopropanol and acetic acid; 25 to 100 mM), concentration of biocatalyst (25–125 mg/mL), reaction time, reaction temperature, organic solvents, molecular sieves, and initial water activity were studied for optimal ester synthesis. Under optimized conditions, 66.0 mM of isopropyl acetate was produced when isopropanol and acetic acid were used at 100 mM: 75 mM in 9 h at 55°C in n-heptane under continuous shaking (160 rpm) using bound lipase (25 mg). Addition of molecular sieves (3 Å × 1.5 mm) resulted in a marked increase in ester synthesis (73.0 mM). Ester synthesis was enhanced by water activity associated with pre-equilibrated saturated salt solution of LiCl. The immobilized lipase retained more than 50% of its activity after the 6th cycle of reuse.

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