Pervaporation membrane reactor study for the esterification of acetic acid and isobutanol using polydimethylsiloxane membrane

Korkmaz, Sevinc; Salt, Yavuz; Hasanoğlu, Ayça; Özkan, Semra; Salt, Inci; Dinçer, Salih

doi:10.1016/j.apcata.2009.06.037

Cited by 42 publications

(25 citation statements)

References 21 publications

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“…Further, functional catalytic membranes could be easily prepared by polymer blending or hybridizing with other active components (Castanheiro et al, 2006;Hasanoglu et al, 2009;Shah and Ritchie, 2005;Zhu et al, 2010) and employed in esterifications of small molecular acids (David et al, 1992;Korkmaz et al, 2009;Liu et al, 2001). And that, Nguyen et al (2003) compared the catalytic activity of membranes obtained by blending polyvinyl alcohol (PVA) with different ionic polymers for the esterification reaction between n-propanol and propanoic acid.…”

Section: Introductionmentioning

confidence: 99%

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Shi

2011

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Shi

2011

Bioresource Technology

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“…The reason for this is that water formation was increased with the use of an excess amount of reactant. Water permeation rate through the membrane was increased and the water content in the PVCMR was decreased …”

Section: Resultsmentioning

confidence: 99%

Pervaporation catalytic membrane reactor study for the production of ethyl acetate using Zr(SO₄)₂.4H₂O coated chitosan membrane

Ünlü

Hilmioğlu

2014

J of Chemical Tech & Biotech

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BACKGROUND A pervaporation catalytic membrane reactor (PVCMR) can contain reaction and separation systems in one unit. This separation technique has attracted increasing attention in recent years due to its low energy requirement, environmentally friendly technology, easy control and scale‐up in integrated systems. The main aim of this present study is to develop a catalytic polymeric composite membrane for application in a PVCMR. RESULTS In this study, esterification of acetic acid and ethanol were studied as a model reaction in a batch reactor and in a PVCMR. A composite membrane was prepared by coating chitosan membrane with a thin layer of Zr(SO4)2.4H2O. Tests were carried out to optimize operating conditions such as initial molar ratio, catalyst concentration and temperature. The acetic acid conversion was increased from 22% to 85% using a PVCMR by removal of water from the reaction mixture in the optimum operating conditions. Under the tested conditions, a molar ratio of reactants 1:1, catalyst concentration 0.25 g L‐1 and temperature 70 °C were found to be optimum conditions for separation. CONCLUSION The PVCMR exhibited higher performances than the batch reactor in the esterification of ethanol and acetic acid. The PVCMR can be used efficiently for other esterification reactions. © 2014 Society of Chemical Industry

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“…It is well known that the presence of products in the reaction media negatively affects the yield in reversible reactions [25]. If the excess volume of alcohol is fed to the reactor (M2, M3), then the total water concentration decreases and esterification runs through the product side.…”

Section: Effect Of the Initial Molar Feed Ratiomentioning

confidence: 99%

“…The initial feed molar ratio is another conversion increment factor in reversible reactions [25]. Fig.…”

Section: Effect Of the Initial Molar Feed Ratiomentioning

confidence: 99%

“…Zhu et al [24] have investigated the acetic acid-ethanol esterification catalyzed by a homogeneous catalyst in a reactor coupled external inert PVMR. The acetic acidethanol reaction has also been investigated by Korkmaz et al [25] with heterogeneous and homogenous catalyst within an external PVMR. Figuiredo et al and Khavi et al [26,27] are the other researchers who have investigated the acetic acid-ethanol esterification within an external PVMR.…”

Section: Introductionmentioning

confidence: 98%

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Simultaneous separation performance of a catalytic membrane reactor for ethyl lactate production by using boric acid coated carboxymethyl cellulose membrane

Nigiz

Hilmioğlu

2016

Reac Kinet Mech Cat

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In this study, a boric acid coated carboxymethyl cellulose composite catalytic membrane was prepared and employed in a pervaporation assisted membrane reactor system to synthesize ethyl lactate. The effect of catalyst loading, temperature, initial molar feed ratio and reaction run time were investigated to evaluate reaction and separation ability of the hybrid pervaporation catalytic membrane reactor (PVCMR) system. The reaction performance was obtained by using lactic acid conversion data. Separation performance was determined as functions of flux and selectivity. It was observed that the conversion increased from 51 to 71 % as the temperature increased from 55 to 75°C. The best result was obtained as 83 % at 75°C when initial alcohol:acid molar ratio was three. Also, it was seen that the catalytic membrane preserved 93.6 % of its activity. The system efficiency was evaluated by comparison of PVCMR data to simply batch reactor data under the same conditions.

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Pervaporation membrane reactor study for the esterification of acetic acid and isobutanol using polydimethylsiloxane membrane

Cited by 42 publications

References 21 publications

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Pervaporation catalytic membrane reactor study for the production of ethyl acetate using Zr(SO₄)₂.4H₂O coated chitosan membrane

Simultaneous separation performance of a catalytic membrane reactor for ethyl lactate production by using boric acid coated carboxymethyl cellulose membrane

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Pervaporation membrane reactor study for the esterification of acetic acid and isobutanol using polydimethylsiloxane membrane

Cited by 42 publications

References 21 publications

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

Pervaporation catalytic membrane reactor study for the production of ethyl acetate using Zr(SO4)2.4H2O coated chitosan membrane

Simultaneous separation performance of a catalytic membrane reactor for ethyl lactate production by using boric acid coated carboxymethyl cellulose membrane

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Pervaporation catalytic membrane reactor study for the production of ethyl acetate using Zr(SO₄)₂.4H₂O coated chitosan membrane