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Pervaporasyon Membran Reaktörde Kitosan / Poli(vinilpirolidon) Blend Membran ile Etil Asetat Sentezi

Ethyl Acetate Synthesis by Chitosan/ Poly(Vinylpyrrolidone) Blend Membrane in Pervaporation Membrane Reactor

Journal Name:

  • Journal of The Turkish Chemical Society, Section B: Chemical Engineering

Publication Year:

  • 2016

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, polymeric blend membranes were prepared for using the esterification reaction. Aluminum potassium sulfate dodecahydrate was used as catalyst. Chitosan and poly(vinylpyrrolidone) polymers were utilized for blend membrane solution. The membrane was prepared by solution casting method. The reaction of ethanol and acetic acid was chosen as a model reaction. Effect of the temperature, amount of catalyst, and initial molar ratio of reactants on the conversion of acetic acid, pervaporation flux, and selectivity were investigated and interpreted. When 10% of conversion value was obtained in batch reactor, 49.76% of conversion was obtained in pervaporation membrane reactor under the same reaction conditions (65 oC, catalyst amount of 5 wt.%, M =6 :1). Compared to the batch reactor, conversion values show the performance of the pervaporation membrane reactor. Pervaporation membrane reactor displayed higher performance with regard to the batch reactor.
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Abstract (Original Language): 
Bu çalışmada, polimerik blend membranlar esterleştirme reaksiyonlarında kullanılmak için hazırlanmıştır. Alüminyum potasyum sülfat dodekahidrat katalizör olarak kullanılmıştır. Kitosan ve poli(vinilpirolidon) polimerleri blend membran çözeltisi için kullanılmıştır. Membran çözeltiden döküm yöntemiyle hazırlanmıştır. Etanol ve asetik asit tepkimesi model reaksiyon olarak seçilmiştir. Sıcaklık, katalizör miktarı ve reaktanların ilk molar oranının asetik asidin dönüşümü, pervaporasyon akısı ve seçicilik üzerindeki etkisi araştırılmış ve yorumlanmıştır. Kesikli reaktörde %10 dönüşüm elde edilirken pervaporasyon membran reaktördeki dönüşümün %49,76 olduğu bulunmuştur (tepkime koşulları aynıdır, 65 °C, ağırlıkça %5 katalizör ve M = 6:1). Kesikli reaktörle kıyaslandığında, dönüşüm değerleri pervaporasyon membran reaktörün performansını göstermektedir. Pervaporasyon membran reaktör, kesikli reaktöre göre daha yüksek performans göstermiştir.
FULL TEXT (PDF): 
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