Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil
With increasingly stringent environmental regulations, desulfurization for gasoline oil production has become an important issue. Nowadays, desulfurization technologies have become an integral part of environmental catalysis studies. It is also important for processing of fuel for fuel-cells, which...
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MDPI AG
2020-04-01
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| Series: | Technologies |
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| Online Access: | https://www.mdpi.com/2227-7080/8/2/22 |
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| author | Mozammel Mazumder Rajib Das Md Symon Jahan Sajib Andrew Jewel Gomes Mohammad Islam Thinesh Selvaratnam Ashiqur Rahman |
| author_facet | Mozammel Mazumder Rajib Das Md Symon Jahan Sajib Andrew Jewel Gomes Mohammad Islam Thinesh Selvaratnam Ashiqur Rahman |
| author_sort | Mozammel Mazumder |
| collection | DOAJ |
| description | With increasingly stringent environmental regulations, desulfurization for gasoline oil production has become an important issue. Nowadays, desulfurization technologies have become an integral part of environmental catalysis studies. It is also important for processing of fuel for fuel-cells, which has a strict requirement for sulfur content for internal combustion engines. In this study, we focused on the preparation and characterization of magnesium hydroxide/aluminum supported NiO, ZnO, ZrO<sub>2</sub>, NiO-ZnO, NiO-ZrO<sub>2</sub>, adsorbents for the adsorptive desulfurization of liquid fuels. These hydrotalcite adsorbents were prepared by co-precipitation method and used for adsorption of thiophene (in n-pentane, as model fuel) and dibenzothiophene at ambient temperature and pressure. The physicochemical behaviors of the fresh adsorbents such as structure, composition, and bonding modes were determined using X-ray diffraction (XRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), energy dispersive X-Ray analysis (EDAX), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). The sulfur concentration in the mixture (thiophene and n-pentane) was measured by UV-Vis spectrophotometry. The percentages of thiophene removal and the adsorption capacity (mg of sulfur per g of adsorbent) of the five adsorbents were compared. The adsorption performance confirmed that NiO-ZrO<sub>2</sub> and NiO-ZnO adsorbents are more efficient in removing thiophene/dibenzothiophene than that of three other adsorbents. The qualitative studies using XPS confirmed the efficient adsorption nature of modified hydrotalcite adsorbents on dibenzothiophene. |
| first_indexed | 2024-03-10T20:11:48Z |
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| issn | 2227-7080 |
| language | English |
| last_indexed | 2024-03-10T20:11:48Z |
| publishDate | 2020-04-01 |
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| record_format | Article |
| series | Technologies |
| spelling | doaj.art-c7df4b4f7c8143bcb6d493fffa0b2f1c2023-11-19T22:51:43ZengMDPI AGTechnologies2227-70802020-04-01822210.3390/technologies8020022Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel OilMozammel Mazumder0Rajib Das1Md Symon Jahan Sajib2Andrew Jewel Gomes3Mohammad Islam4Thinesh Selvaratnam5Ashiqur Rahman6Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USADepartment of Chemical Engineering, Lamar University, Beaumont, TX 77710, USADepartment of Chemical Engineering, Howard University, Washington, DC 20059, USADepartment of Chemical Engineering, Lamar University, Beaumont, TX 77710, USAConocoPhillips Company, Houston, TX 77252, USADepartment of Civil and Environmental Engineering, Lamar University, Beaumont, TX 77710, USADepartment of Chemical Engineering, Lamar University, Beaumont, TX 77710, USAWith increasingly stringent environmental regulations, desulfurization for gasoline oil production has become an important issue. Nowadays, desulfurization technologies have become an integral part of environmental catalysis studies. It is also important for processing of fuel for fuel-cells, which has a strict requirement for sulfur content for internal combustion engines. In this study, we focused on the preparation and characterization of magnesium hydroxide/aluminum supported NiO, ZnO, ZrO<sub>2</sub>, NiO-ZnO, NiO-ZrO<sub>2</sub>, adsorbents for the adsorptive desulfurization of liquid fuels. These hydrotalcite adsorbents were prepared by co-precipitation method and used for adsorption of thiophene (in n-pentane, as model fuel) and dibenzothiophene at ambient temperature and pressure. The physicochemical behaviors of the fresh adsorbents such as structure, composition, and bonding modes were determined using X-ray diffraction (XRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), energy dispersive X-Ray analysis (EDAX), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). The sulfur concentration in the mixture (thiophene and n-pentane) was measured by UV-Vis spectrophotometry. The percentages of thiophene removal and the adsorption capacity (mg of sulfur per g of adsorbent) of the five adsorbents were compared. The adsorption performance confirmed that NiO-ZrO<sub>2</sub> and NiO-ZnO adsorbents are more efficient in removing thiophene/dibenzothiophene than that of three other adsorbents. The qualitative studies using XPS confirmed the efficient adsorption nature of modified hydrotalcite adsorbents on dibenzothiophene.https://www.mdpi.com/2227-7080/8/2/22adsorptionhydrotalcitethiophene/dibenzothiophenen-pentanedesulfurization |
| spellingShingle | Mozammel Mazumder Rajib Das Md Symon Jahan Sajib Andrew Jewel Gomes Mohammad Islam Thinesh Selvaratnam Ashiqur Rahman Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil Technologies adsorption hydrotalcite thiophene/dibenzothiophene n-pentane desulfurization |
| title | Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil |
| title_full | Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil |
| title_fullStr | Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil |
| title_full_unstemmed | Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil |
| title_short | Comparison of Different Hydrotalcite Solid Adsorbents on Adsorptive Desulfurization of Liquid Fuel Oil |
| title_sort | comparison of different hydrotalcite solid adsorbents on adsorptive desulfurization of liquid fuel oil |
| topic | adsorption hydrotalcite thiophene/dibenzothiophene n-pentane desulfurization |
| url | https://www.mdpi.com/2227-7080/8/2/22 |
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