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Immobilized lipase catalyzed synthesis of n-amyl acetate: parameter optimization, heterogeneous kinetics, continuous flow operation and reactor modeling

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논문

Immobilized lipase catalyzed synthesis of n-amyl acetate: parameter optimization, heterogeneous kinetics, continuous flow operation and reactor modeling

학술지

Journal of chemical technology and biotechnology

저자명

Mathpati, Ashwini C; Kalghatgi, Saurabh G; Mathpati, Channamallikarjun S; Bhanage, Bhalchandra M

초록

<P><B>Abstract</B></P><P><B>BACKGROUND</B></P><P>The work describes the synthesis of <I>n</I>&#8208;amyl acetate from <I>n</I>&#8208;amyl alcohol, a byproduct of the sugar industry. The synthesis was carried out using <I>Burkholderia cepacia</I> lipase immobilized on a hydrophobic polymer support containing hydroxypropyl methyl cellulose and polyvinyl alcohol. The reaction conditions were optimized and intrinsic kinetics were evaluated. An immobilized lipase&#8208;coated film reactor was designed and evaluated for continuous flow synthesis. An attempt has been made to model the coated film reactor based on axial dispersion method.</P><P><B>RESULTS</B></P><P>The reaction conditions were optimized using a central composite design&#8208;based response surface method. The optimum conditions for a maximum conversion of 99.5% were an acyl donor : alcohol ratio of 2:1, temperature 50 &deg;C and catalyst loading 40 mg in <I>n</I>&#8208;hexane. The intrinsic kinetics of reaction were fitted using an order bi&ndash;bi model with alcohol inhibition. The continuous flow synthesis was carried out in a coated film reactor with residence times ranging from 12 min to 60 min with per pass conversions of 5.6% and 22%, respectively. The catalyst was successfully recycled for five cycles.</P><P><B>CONCLUSION</B></P><P>The activation energy of the reaction was found to be 15.48 kJ mol<SUP>&minus;1</SUP>. The productivity from batch and continuous flow reactor were found to be 8.16 and 6.54 mmol g<SUP>&minus;1</SUP> h<SUP>&minus;1</SUP>. &copy; 2018 Society of Chemical Industry</P>

발행연도

2018

발행기관

John WileySons, Ltd

ISSN

0268-2575

ISSN

1097-4660

93

10

페이지

pp.2906-2916

주제어

Film&#x2010; type immobilization; continuous flow reactor; central composite design; axial dispersion model; computational fluid dynamics;

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1 2023-12-11

논문; 2018-12-31

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