Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur
As the two types of major impurities in FCC slurry oil (SLO), olefins and sulfur seriously deteriorate the preparation and quality of mesophase pitch or needle coke. The development of a hydrotreatment for SLO to remove olefins and sulfur selectively becomes imperative. This work presents the potent...
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2721 |
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| author | He Liu Zhipeng Qiu Huihui Pan Aijun Guo Shouhui Jiao Feng Wang Kun Chen Zongxian Wang |
| author_facet | He Liu Zhipeng Qiu Huihui Pan Aijun Guo Shouhui Jiao Feng Wang Kun Chen Zongxian Wang |
| author_sort | He Liu |
| collection | DOAJ |
| description | As the two types of major impurities in FCC slurry oil (SLO), olefins and sulfur seriously deteriorate the preparation and quality of mesophase pitch or needle coke. The development of a hydrotreatment for SLO to remove olefins and sulfur selectively becomes imperative. This work presents the potentiality of dispersed Mo<sub>2</sub>C and MoS<sub>2</sub> nanoparticles as selective hydrotreating catalysts of SLO. Mo<sub>2</sub>C was synthesized by the carbonization of citric acid, ammonium molybdate and KCl mixtures while MoS<sub>2</sub> was prepared from the decomposition of precursors. These catalysts were characterized by XRD, HRTEM, XPS, BJH, BET, and applied to the hydrotreating of an SLO surrogate with defined components and real SLO. The conversion of olefins, dibenzothiophene and anthracene in the surrogate was detected by GC-MS. Elemental analysis, bromine number, diene value, <sup>1</sup>H-NMR and spot test were used to characterize the changes of the real SLO. The results show that hydrotreating the SLO surrogate with a very small amount of Mo-based nanoparticles could selectively remove olefins and sulfur without the overhydrogenation of polyaromatics. Mo<sub>2</sub>C exhibited much better activity than MoS<sub>2</sub>, with 95% of olefins and dibenzothiophene in the surrogate removed while only 15% anthracene was hydrogenated. The stability of the real SLO was significantly improved. Its structural parameters changed subtly, proving the aromatic macromolecules had been preserved. |
| first_indexed | 2024-03-10T06:19:30Z |
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| last_indexed | 2024-03-10T06:19:30Z |
| publishDate | 2021-10-01 |
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| series | Nanomaterials |
| spelling | doaj.art-b89c28bdd5564f33998ca6cfeed5a4932023-11-22T19:25:39ZengMDPI AGNanomaterials2079-49912021-10-011110272110.3390/nano11102721Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and SulfurHe Liu0Zhipeng Qiu1Huihui Pan2Aijun Guo3Shouhui Jiao4Feng Wang5Kun Chen6Zongxian Wang7State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaState Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum (East China), 66 Changjiang West Road, Huangdao District, Qingdao 266580, ChinaAs the two types of major impurities in FCC slurry oil (SLO), olefins and sulfur seriously deteriorate the preparation and quality of mesophase pitch or needle coke. The development of a hydrotreatment for SLO to remove olefins and sulfur selectively becomes imperative. This work presents the potentiality of dispersed Mo<sub>2</sub>C and MoS<sub>2</sub> nanoparticles as selective hydrotreating catalysts of SLO. Mo<sub>2</sub>C was synthesized by the carbonization of citric acid, ammonium molybdate and KCl mixtures while MoS<sub>2</sub> was prepared from the decomposition of precursors. These catalysts were characterized by XRD, HRTEM, XPS, BJH, BET, and applied to the hydrotreating of an SLO surrogate with defined components and real SLO. The conversion of olefins, dibenzothiophene and anthracene in the surrogate was detected by GC-MS. Elemental analysis, bromine number, diene value, <sup>1</sup>H-NMR and spot test were used to characterize the changes of the real SLO. The results show that hydrotreating the SLO surrogate with a very small amount of Mo-based nanoparticles could selectively remove olefins and sulfur without the overhydrogenation of polyaromatics. Mo<sub>2</sub>C exhibited much better activity than MoS<sub>2</sub>, with 95% of olefins and dibenzothiophene in the surrogate removed while only 15% anthracene was hydrogenated. The stability of the real SLO was significantly improved. Its structural parameters changed subtly, proving the aromatic macromolecules had been preserved.https://www.mdpi.com/2079-4991/11/10/2721molybdenum carbide nanoparticlesmolybdenum sulfide nanoparticlesselective hydrotreatingFCC slurry oilolefins and sulfur removal |
| spellingShingle | He Liu Zhipeng Qiu Huihui Pan Aijun Guo Shouhui Jiao Feng Wang Kun Chen Zongxian Wang Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur Nanomaterials molybdenum carbide nanoparticles molybdenum sulfide nanoparticles selective hydrotreating FCC slurry oil olefins and sulfur removal |
| title | Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur |
| title_full | Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur |
| title_fullStr | Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur |
| title_full_unstemmed | Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur |
| title_short | Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur |
| title_sort | molybdenum carbide and sulfide nanoparticles as selective hydrotreating catalysts for fcc slurry oil to remove olefins and sulfur |
| topic | molybdenum carbide nanoparticles molybdenum sulfide nanoparticles selective hydrotreating FCC slurry oil olefins and sulfur removal |
| url | https://www.mdpi.com/2079-4991/11/10/2721 |
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