inetic modeling of glycerol acetylation catalyzed by styrene-divinylbenzene and styrene-trimethylolpropane triacrylate sulfonated resin

Autor(es)

Godoy, William M. ^[1] ; Carpegiani, Juliana A. ^[1] ; Pereira, Felix M. ^[1] ; Guimaraes, Daniela H. P. ^[1] ; Aguiar, Leandro G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch Lorena, Dept Chem Engn, BR-12602810 Lorena, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Reaction Kinetics Mechanisms and Catalysis; v. 135, n. 1, p. 233-245, FEB 2022.
• Citações Web of Science: 0

Resumo

The present work reports a kinetic comparison between two resins made with different cross-linkers, Amberlyst 36 and PS-TMPTA. The latter was synthesized in this study. Both resins were used as catalysts in glycerol acetylation in a batch reactor at 80 and 90 degrees C, with 5 and 10 g L-1 of catalyst concentration under a molar ratio 4:1 of acetic acid/glycerol. The synthesized resin (PS-TMPTA) presented low ion exchange capacity (1.5 mmol g(-1)) compared to the commercial resin (Amberlyst 36, 5.45 mmol g(-1)), but both presented similar efficiency in catalysis, probably due to the difference in cross-linking densities. The experimental results explain the resins' behavior and properties in detail (ion exchange capacities, swelling index and catalytic efficiency) and the kinetic models were compared utilizing the difference between the corrected Akaike Information Criterion (Delta AICc), Standard Deviation (s) and P-value (student t distribution). According to the results, the irreversible first order model had the best fit of the two models for the experimental conditions studied for this work. (AU)

• Processo FAPESP: 17/26985-4 - Conversão do glicerol catalisada por estireno-co-dimetacrilato sulfonado: experimentos e modelagem matemática
• Beneficiário: Leandro Gonçalves de Aguiar
• Modalidade de apoio: Auxílio à Pesquisa - Regular