Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil
In this study NiO - CoO bimetallic catalysts are prepared with two Ni/Co ratios (70:30 and 80: 20) using the precipitation method of nitrate salts. The effects of Ni /Co ratio and preparation methods on the catalyst are analyzed by using different characterization techniques, i.e. atomic absorpt...
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| Format: | Article |
| Language: | Arabic |
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College of Science for Women, University of Baghdad
2016-06-01
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| Series: | Baghdad Science Journal |
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| Online Access: | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2754 |
| _version_ | 1811248302159560704 |
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| author | Baghdad Science Journal |
| author_facet | Baghdad Science Journal |
| author_sort | Baghdad Science Journal |
| collection | DOAJ |
| description | In this study NiO - CoO bimetallic catalysts are prepared with two Ni/Co ratios (70:30 and 80: 20) using the precipitation method of nitrate salts. The effects of Ni /Co ratio and preparation methods on the catalyst are analyzed by using different characterization techniques, i.e. atomic absorption (AA) , XRD, surface area and pore volume measurements according to the BET method .
The results indicate that the best catalyst is the one containing the percentage of Ni :Co ( 70 : 30 ). Experiments indicate that the optimal conditions to prepare catalyst are stirring for three hours at a temperature of 60oC of the preparation , pH= (8-9) , calcination temperature at 400oC for two hours using the impregnation method .
The catalyst activity is studied through the application in the process of oxidative desulfurization of gas oil fuel . The optimal conditions for deep oxidative desulfurization processes are : catalysts 3% , 2 gm. Na2 CO3 , refluxe time 3 hours at 400 C , using a mechanical stirrer at moderate speed (700 rpm), the volume ratio of gas oil : H2O2 : acetic acid is 10: 1: 0.5 and extracted with 1:1 ratio of acetonitrile to the gas oil for three times .
The results indicate that the catalysts are efficient to remove sulfur from gas oil depending on temperature, time, concentration of hydrogen peroxide H2O2 30 % and solvent used for extraction.
The efficiency of the best catalyst gives a maximum sulfur removal reaching 68.97%. |
| first_indexed | 2024-04-12T15:24:40Z |
| format | Article |
| id | doaj.art-2fc1bef9ec424e97a9b9075c370ef40c |
| institution | Directory Open Access Journal |
| issn | 2078-8665 2411-7986 |
| language | Arabic |
| last_indexed | 2024-04-12T15:24:40Z |
| publishDate | 2016-06-01 |
| publisher | College of Science for Women, University of Baghdad |
| record_format | Article |
| series | Baghdad Science Journal |
| spelling | doaj.art-2fc1bef9ec424e97a9b9075c370ef40c2022-12-22T03:27:17ZaraCollege of Science for Women, University of BaghdadBaghdad Science Journal2078-86652411-79862016-06-0113210.21123/bsj.13.2.75-83Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas OilBaghdad Science JournalIn this study NiO - CoO bimetallic catalysts are prepared with two Ni/Co ratios (70:30 and 80: 20) using the precipitation method of nitrate salts. The effects of Ni /Co ratio and preparation methods on the catalyst are analyzed by using different characterization techniques, i.e. atomic absorption (AA) , XRD, surface area and pore volume measurements according to the BET method . The results indicate that the best catalyst is the one containing the percentage of Ni :Co ( 70 : 30 ). Experiments indicate that the optimal conditions to prepare catalyst are stirring for three hours at a temperature of 60oC of the preparation , pH= (8-9) , calcination temperature at 400oC for two hours using the impregnation method . The catalyst activity is studied through the application in the process of oxidative desulfurization of gas oil fuel . The optimal conditions for deep oxidative desulfurization processes are : catalysts 3% , 2 gm. Na2 CO3 , refluxe time 3 hours at 400 C , using a mechanical stirrer at moderate speed (700 rpm), the volume ratio of gas oil : H2O2 : acetic acid is 10: 1: 0.5 and extracted with 1:1 ratio of acetonitrile to the gas oil for three times . The results indicate that the catalysts are efficient to remove sulfur from gas oil depending on temperature, time, concentration of hydrogen peroxide H2O2 30 % and solvent used for extraction. The efficiency of the best catalyst gives a maximum sulfur removal reaching 68.97%.http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2754"Bimetallic Catalyst, N i- Co, Desulfurization, Gas Oil." |
| spellingShingle | Baghdad Science Journal Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil Baghdad Science Journal "Bimetallic Catalyst, N i- Co, Desulfurization, Gas Oil." |
| title | Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil |
| title_full | Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil |
| title_fullStr | Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil |
| title_full_unstemmed | Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil |
| title_short | Preparation and Characterization of Bimetallic Catalyst (NiO – CoO) for Desulfurization of Gas Oil |
| title_sort | preparation and characterization of bimetallic catalyst nio coo for desulfurization of gas oil |
| topic | "Bimetallic Catalyst, N i- Co, Desulfurization, Gas Oil." |
| url | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2754 |
| work_keys_str_mv | AT baghdadsciencejournal preparationandcharacterizationofbimetalliccatalystniocoofordesulfurizationofgasoil |