@inproceedings{scholars7397,
           title = {Total Acid Number Reduction of 2, 6-Naphthalenedicarboxylic Acid Using Subcritical Methanol for Reducing Acidity of Heavy Oil: A Kinetic Study},
          volume = {148},
            note = {cited By 3; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138},
             doi = {10.1016/j.proeng.2016.06.454},
         journal = {Procedia Engineering},
       publisher = {Elsevier Ltd},
           pages = {1213--1219},
            year = {2016},
        keywords = {Activation energy; Association reactions; Autoclaves; Catalysts; Chemical activation; Crude oil; Heavy oil production; Kinetics; Materials testing; Methanol; Petroleum deposits; Process engineering, American society for testing materials; Gas-phase concentration; Hydrocarbon deposits; Large-scale reactors; Preexponential factor; Reaction temperature; Second order kinetics; Subcritical methanol, Reaction kinetics},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014031783&doi=10.1016\%2fj.proeng.2016.06.454&partnerID=40&md5=a54ae64ffe76707ed2cf15a0d39ca5a9},
        abstract = {Naphthenic acid (NA) found in hydrocarbon deposits is responsible for acidity of petroleum oils. In this study, a model compound of NAs, 2, 6-Naphthalenedicarboxylic acid (NDCA), is used for total acid number (TAN) reduction kinetic analysis. This goal of this paper is to investigate the capability of subcritical methanol (SubC-MeOH) for reducing acidity of NDCA without the addition of any catalyst or additives. The reaction kinetics is also discovered for large scale reactor design. The experiments were carried out in a 25 ml autoclave reactor (China) at temperatures of 180-220oC, a methanol partial pressure (MPP) of 0.1 MPa, reaction times of 0-60 min and a NDCA initial gas phase concentration of 0.03 g/mL. The TAN content of the samples were analyzed using American Society for Testing Materials (ASTM) D 974 techniques. The reaction products were identified and quantified with the help of GC/MS and GC-FID respectively. Experimental results reveal that TAN reduction of NDCA was increasing with increasing reaction temperature and time. Approximately, 52.12 TAN was reduced at a temperature of 220oC, a MPP of 0.1 MPa, and a reaction time of 60 min. Experimental data revealed that TAN removal reaction kinetics followed second order kinetics with an activation energy of 8.24 kcal/mol and a pre-exponential factor of 2.087 fraction-1s-1. Therefore, SubC-MeOH is capable to reduce TAN of NDCA without the addition of any catalyst or additives. {\^A}{\copyright} 2016 Published by Elsevier Ltd.},
            issn = {18777058},
          author = {Mandal, P. C. and Abdullah, A. B. and Rahman, M. M.}
}