Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins
Aluminum compounds; Carbides; Carbon dioxide; Catalyst activity; Hydrogenation; Iron oxides; Light olefins; Paraffins; Zinc; Active site; CO2 hydrogenation; Function of time; Iron carbides; Light olefins yield; Number of active sites; Optimum operating conditions; Zn content; Zinc compounds
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2023
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my.uniten.dspace-262662023-05-29T17:08:27Z Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins Witoon T. Chaipraditgul N. Numpilai T. Lapkeatseree V. Ayodele B.V. Cheng C.K. Siri-Nguan N. Sornchamni T. Limtrakul J. 23487511100 57219253139 56896137000 57221501569 56862160400 57204938666 55770826900 6507994399 7003474789 Aluminum compounds; Carbides; Carbon dioxide; Catalyst activity; Hydrogenation; Iron oxides; Light olefins; Paraffins; Zinc; Active site; CO2 hydrogenation; Function of time; Iron carbides; Light olefins yield; Number of active sites; Optimum operating conditions; Zn content; Zinc compounds CO2 hydrogenation to light olefins over Fe-Co-Zn/K-Al2O3 catalysts with different Zn loading contents (0�1.74 wt%) is studied. The addition of Zn improves the dispersion and the reducibility of iron oxides. The amount of CO adsorbed of the catalysts showed a volcanic trend as a function of Zn content with its maximum of 2.42 ?mol g?1 at 0.58 wt% Zn, suggesting an increase of number of active sites. The 0.58 wt% Zn-promoted Fe-Co/K-Al2O3 catalyst shows superior activity for light olefins yield (19.9%) under the optimum operating conditions of 340 �C, 25 bar, 9,000 mL gcat?1 h?1 and H2 to CO2 ratio = 4. A gradual decrease in olefin to paraffin ratio with an almost constant CO2 conversion as a function of time-on-stream is observed, which is related to a continuous increase of iron carbide content, indicating that the iron carbide can be acted as the active site for paraffins production. � 2021 Elsevier Ltd Final 2023-05-29T09:08:27Z 2023-05-29T09:08:27Z 2021 Article 10.1016/j.ces.2020.116428 2-s2.0-85099283251 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099283251&doi=10.1016%2fj.ces.2020.116428&partnerID=40&md5=1f38249afff07679d3af8e1d421bb79b https://irepository.uniten.edu.my/handle/123456789/26266 233 116428 Elsevier Ltd Scopus |
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Aluminum compounds; Carbides; Carbon dioxide; Catalyst activity; Hydrogenation; Iron oxides; Light olefins; Paraffins; Zinc; Active site; CO2 hydrogenation; Function of time; Iron carbides; Light olefins yield; Number of active sites; Optimum operating conditions; Zn content; Zinc compounds |
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23487511100 |
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23487511100 Witoon T. Chaipraditgul N. Numpilai T. Lapkeatseree V. Ayodele B.V. Cheng C.K. Siri-Nguan N. Sornchamni T. Limtrakul J. |
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Article |
| author |
Witoon T. Chaipraditgul N. Numpilai T. Lapkeatseree V. Ayodele B.V. Cheng C.K. Siri-Nguan N. Sornchamni T. Limtrakul J. |
| spellingShingle |
Witoon T. Chaipraditgul N. Numpilai T. Lapkeatseree V. Ayodele B.V. Cheng C.K. Siri-Nguan N. Sornchamni T. Limtrakul J. Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| author_sort |
Witoon T. |
| title |
Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| title_short |
Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| title_full |
Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| title_fullStr |
Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| title_full_unstemmed |
Highly active Fe-Co-Zn/K-Al2O3 catalysts for CO2 hydrogenation to light olefins |
| title_sort |
highly active fe-co-zn/k-al2o3 catalysts for co2 hydrogenation to light olefins |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
| _version_ |
1806426633681240064 |
| score |
13.214268 |