Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature
Till date, oxidative ethanol steam reforming use Ni-based catalysts to produce syngas. However, Ni catalysts suffer from easy deactivation due to the coke formation at low temperatures. Therefore, oxidative ethanol dry reforming is a promising method and was investigated over 10 %Co/Al2O3 catalyst d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2023
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| Online Access: | http://umpir.ump.edu.my/id/eprint/37581/1/Oxidative%20ethanol%20dry%20reforming%20for%20production%20of%20syngas%20over%20Co-based%20catalyst.pdf |
| _version_ | 1796995710309105664 |
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| author | Fahim, Fayaz He, Chao Goel, Avishek Rintala, Jukka Konttinen, Jukka |
| author_facet | Fahim, Fayaz He, Chao Goel, Avishek Rintala, Jukka Konttinen, Jukka |
| author_sort | Fahim, Fayaz |
| collection | UMP |
| description | Till date, oxidative ethanol steam reforming use Ni-based catalysts to produce syngas. However, Ni catalysts suffer from easy deactivation due to the coke formation at low temperatures. Therefore, oxidative ethanol dry reforming is a promising method and was investigated over 10 %Co/Al2O3 catalyst due to their high activity and stability to produce high-quality syngas. More importantly, the syngas can be upgraded to produce liquid biofuels and chemicals. The catalyst was evaluated in a quartz fixed-bed reactor under atmospheric pressure at PCO =PO= 5 kPa, PC = 15 kPa, with reaction temperature ranging between 773 and 973 K. The γ-Al2O3 support and 10 %Co/Al2O3 catalyst had BET surface areas of 175.2 m2 g−1 and 143.1 m2 g−1, respectively. Co3O4 and spinel CoAl2O4 phases were detected through X-ray diffraction measurements on the 10 %Co/Al2O3 catalyst surface. H2-TPR measurements indicate that the 10 %Co/Al2O3 catalyst was completely reduced at a temperature beyond 1000 K. NH3-TPD measurements indicated the presence of the weak, medium, and strong acid sites on the γ-Al2O3 support and 10 %Co/Al2O3 catalyst. Due to increased reaction temperature from 773 to 973 K, C2H5OH and CO2 conversions improved from 22.5 % to 93.6 % and 16.9–52.8 %, respectively. Additionally, the optimal yield of H2 and CO obtained at 68.1 % and 58.3 %, respectively. Temperature-programmed oxidation experiments indicated that the amount of carbon deposition was the lowest (28,92 %) at 973 K and increased by 41.48 % at 773 K. |
| first_indexed | 2024-03-06T13:06:17Z |
| format | Article |
| id | UMPir37581 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T13:06:17Z |
| publishDate | 2023 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir375812023-08-29T00:39:35Z http://umpir.ump.edu.my/id/eprint/37581/ Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature Fahim, Fayaz He, Chao Goel, Avishek Rintala, Jukka Konttinen, Jukka QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology Till date, oxidative ethanol steam reforming use Ni-based catalysts to produce syngas. However, Ni catalysts suffer from easy deactivation due to the coke formation at low temperatures. Therefore, oxidative ethanol dry reforming is a promising method and was investigated over 10 %Co/Al2O3 catalyst due to their high activity and stability to produce high-quality syngas. More importantly, the syngas can be upgraded to produce liquid biofuels and chemicals. The catalyst was evaluated in a quartz fixed-bed reactor under atmospheric pressure at PCO =PO= 5 kPa, PC = 15 kPa, with reaction temperature ranging between 773 and 973 K. The γ-Al2O3 support and 10 %Co/Al2O3 catalyst had BET surface areas of 175.2 m2 g−1 and 143.1 m2 g−1, respectively. Co3O4 and spinel CoAl2O4 phases were detected through X-ray diffraction measurements on the 10 %Co/Al2O3 catalyst surface. H2-TPR measurements indicate that the 10 %Co/Al2O3 catalyst was completely reduced at a temperature beyond 1000 K. NH3-TPD measurements indicated the presence of the weak, medium, and strong acid sites on the γ-Al2O3 support and 10 %Co/Al2O3 catalyst. Due to increased reaction temperature from 773 to 973 K, C2H5OH and CO2 conversions improved from 22.5 % to 93.6 % and 16.9–52.8 %, respectively. Additionally, the optimal yield of H2 and CO obtained at 68.1 % and 58.3 %, respectively. Temperature-programmed oxidation experiments indicated that the amount of carbon deposition was the lowest (28,92 %) at 973 K and increased by 41.48 % at 773 K. Elsevier Ltd 2023-06 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/37581/1/Oxidative%20ethanol%20dry%20reforming%20for%20production%20of%20syngas%20over%20Co-based%20catalyst.pdf Fahim, Fayaz and He, Chao and Goel, Avishek and Rintala, Jukka and Konttinen, Jukka (2023) Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature. Materials Today Communications, 35 (105671). pp. 1-7. ISSN 2352-4928. (Published) https://doi.org/10.1016/j.mtcomm.2023.105671 https://doi.org/10.1016/j.mtcomm.2023.105671 |
| spellingShingle | QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology Fahim, Fayaz He, Chao Goel, Avishek Rintala, Jukka Konttinen, Jukka Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title | Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title_full | Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title_fullStr | Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title_full_unstemmed | Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title_short | Oxidative ethanol dry reforming for production of syngas over Co-based catalyst : Effect of reaction temperature |
| title_sort | oxidative ethanol dry reforming for production of syngas over co based catalyst effect of reaction temperature |
| topic | QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/37581/1/Oxidative%20ethanol%20dry%20reforming%20for%20production%20of%20syngas%20over%20Co-based%20catalyst.pdf |
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