relation: https://khub.utp.edu.my/scholars/8400/
title: Total acid number reduction of naphthenic acid using subcritical methanol: A kinetic study
creator: Mandal, P.C.
creator: Nasir, H.S.M.
description: The aim of this study is to explore the capability of subcritical methanol to reduce the acidity of naphthenic acids and to determine reaction kinetics for large-scale reactor design. The experiments were carried out in a 25 mL autoclave reactor (China) at temperatures of 70-120oC, Methanol Partial Pressures (MPPs) of 0.1-1.5 MPa, and reaction times of 0-60 min. The total acid number content of the samples was analyzed using ASTM D 974 techniques. Experimental results reveal that total acid number reduction of naphthenic acids increased with increasing reaction temperature, MPP, and reaction time. Approximately 74.20 total acid number was reduced at a temperature of 120oC, a MPP of 1 MPa, and a reaction time of 60 min. Experimental data revealed that total acid number removal reaction kinetics followed second-order kinetics with an activation energy of 11.27 kcal/mol. Therefore, subcritical methanol is able to reduce the total acid number of naphthenic acids without the addition of any catalyst. © 2018, Iranian Journal of Chemistry and Chemical Engineering. All rights reserved.
date: 2017
type: Article
type: PeerReviewed
identifier:   Mandal, P.C. and Nasir, H.S.M.  (2017) Total acid number reduction of naphthenic acid using subcritical methanol: A kinetic study.  Iranian Journal of Chemistry and Chemical Engineering, 36 (5).  pp. 143-147.  ISSN 10219986     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044451650&partnerID=40&md5=349274c3679dc3fb5d8d2abe8060b744