Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study
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 P...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2017-10-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
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| Online Access: | http://www.ijcce.ac.ir/article_30026_8d050423e5870e158315cebb1d81d12f.pdf |
| _version_ | 1818541627307720704 |
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| author | Pradip Mandal Huda Nasir |
| author_facet | Pradip Mandal Huda Nasir |
| author_sort | Pradip Mandal |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-11T22:11:44Z |
| format | Article |
| id | doaj.art-25a5158a25d74c5da2dd9a67168051f3 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-11T22:11:44Z |
| publishDate | 2017-10-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-25a5158a25d74c5da2dd9a67168051f32022-12-22T00:48:45ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862017-10-0136514314830026Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic StudyPradip Mandal0Huda Nasir1Centre of Research in Ionic Liquids, Universiti Teknologi Petronas, 32610 Bandar Seri Iskandar, Perak, MALAYSIADepartment of Petroleum Engineering, Universiti Teknologi Petronas, 32610 Bandar Seri Iskandar, Perak, MALAYSIAThe 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.http://www.ijcce.ac.ir/article_30026_8d050423e5870e158315cebb1d81d12f.pdfnaphthenic acidsubcritical methanoltotal acid numberpetroleum oilreaction kinetics |
| spellingShingle | Pradip Mandal Huda Nasir Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study Iranian Journal of Chemistry & Chemical Engineering naphthenic acid subcritical methanol total acid number petroleum oil reaction kinetics |
| title | Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study |
| title_full | Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study |
| title_fullStr | Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study |
| title_full_unstemmed | Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study |
| title_short | Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study |
| title_sort | total acid number reduction of naphthenic acid using subcritical methanol a kinetic study |
| topic | naphthenic acid subcritical methanol total acid number petroleum oil reaction kinetics |
| url | http://www.ijcce.ac.ir/article_30026_8d050423e5870e158315cebb1d81d12f.pdf |
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