KINETICS OF THE ESTERIFICATION OF PROPIONIC ACID WITH ISOBUTYL ALCOHOL OVER AMBERLYST 36 AND AMBERLYST 70
The esterification of propionic acid with isobutyl alcohol has been studied in a batch reactor in the presence of Amberlyst 36 and Amberlyst 70 catalysts. Reaction parameters applied in this study are speed of agitation (500-1000 rpm), particle size of catalyst (400-600 µm, 600+ µm), temperature (318-348 K) and catalyst loading (4-12 g-dry resin/L). A pseudo-homogeneous kinetic model was derived and all thermodynamic and kinetic parameters were calculated. Forward reaction rate constant for Amberlyst 36 and Amberlyst 70 determined as follows: $ k1 = 160171 exp(-56689/RT) (L mol-1 min-1)$ $ k1 = 293314 exp(-57292/RT) (L mol-1 min-1)$ In a comparison of the two catalysts used in this study, experimental results showed that Amberlyst 70 is more effective than Amberlyst 36.
Propiyonik Asitin İsobütil Alkol ile Amberlyst 36 ve Amberlyst 70 Katalizörleri varlığında Esterleşme Kinetiği
Propiyonik asidin izobütil alkol ile esterleşme tepkimesi, Amberlyst 36 ve Amberlyst 70 katalizörlerinin varlığında kesikli bir reaktörde çalışılmıştır. Bu çalışmada; karıştırma hızı (500-1000 rpm), katalizör tanecik boyutu (400-600 μm, 600+ μm), sıcaklık (318-348 K) ve katalizör miktarı (4-12 g kuru reçine / L) reaksiyon parametreleridir. Bir yalancı-homojen kinetik model türetilmiş ve tüm termodinamik ve kinetik parametreler hesaplanmıştır. Amberlyst 36 ve Amberlyst 70 için ileri reaksiyon hızı sabiti aşağıdaki gibi belirlenmiştir: $ k1 = 160171 exp(-56689/RT) (L mol-1 min-1)$ $ k1 = 293314 exp(-57292/RT) (L mol-1 min-1)$ Bu çalışmada kullanılan iki katalizörün karşılaştırmasında deneysel sonuçlar Amberlyst 70'in Amberlyst 36'dan daha etkili olduğunu göstermiştir.
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- ISSN: 2148-4147
- Yayın Aralığı: Yılda 3 Sayı
- Başlangıç: 2002
- Yayıncı: BURSA ULUDAĞ ÜNİVERSİTESİ > MÜHENDİSLİK FAKÜLTESİ
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