Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Kinetics of the hydrolysis of acetic anhydride using reaction calorimetry: effects of strong acid catalyst and salts

Texto completo
Autor(es):
Garcia, Jessica M. [1] ; Bernardino, Igor R. B. [1] ; Calasans, Vinicius [1] ; Giudici, Reinaldo [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Escola Politecn, Dept Chem Engn, Av Prof Luciano Gualbertotravessa 3, BR-05508010 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: CHEMICAL ENGINEERING RESEARCH & DESIGN; v. 166, p. 29-39, FEB 2021.
Citações Web of Science: 0
Resumo

The effect of strong acid (hydrochloric acid) catalyst and salts (sodium chloride and potassium chloride) on the kinetics of the hydrolysis of acetic anhydride was studied using a simple isoperibolic calorimetric technique. The apparent second-order rate constant was observed to increase linearly with the increase in the strong acid concentration, suggesting the occurrence of a non-catalytic and an acid-catalyzed reaction route. The kinetic parameters for the non-catalytic route and for the acid-catalyzed route were determined. The effect of salt concentration causes a decrease in the effective rate constant over the range of variables studied. Sodium and potassium chloride presented practically the same negative effect on the hydrolysis kinetics. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 15/50684-9 - Sustainable gas pathways for Brazil: from microcosm to macrocosm
Beneficiário:Reinaldo Giudici
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/50218-2 - CEPEMA - Centro Cooperativo em Engenharia Ambiental
Beneficiário:Claudio Augusto Oller do Nascimento
Linha de fomento: Auxílio à Pesquisa - Temático