Totally-green Fuels via CO2 Hydrogenation
Hydrogen is the cleanest energy vector among any fuels, nevertheless, many aspects related to its distribution and storage still raise serious questions concerning costs, infrastructure and safety. On this account, the chemical storage of renewable-hydrogen by conversion into green-fuels, such as: m...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2020-08-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
| Subjects: | |
| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/7168 |
| _version_ | 1797677849983844352 |
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| author | Lorenzo Spadaro Alessandra Palella Francesco Arena |
| author_facet | Lorenzo Spadaro Alessandra Palella Francesco Arena |
| author_sort | Lorenzo Spadaro |
| collection | DOAJ |
| description | Hydrogen is the cleanest energy vector among any fuels, nevertheless, many aspects related to its distribution and storage still raise serious questions concerning costs, infrastructure and safety. On this account, the chemical storage of renewable-hydrogen by conversion into green-fuels, such as: methanol, via CO2 hydrogenation assumes a role of primary importance, also in the light of a cost-to-benefit analysis. Therefore, this paper investigates the effects of chemical composition on the structural properties, surface reactivity and catalytic pathway of ternary CuO-ZnO-CeO2 systems, shedding light on the structure-activity relationships. Thus, a series of CuZnCeO2 catalysts, at different CuO/CeO2 ratio (i.e. 0.2-1.2) were performed in the CO2 hydrogenation reactions at 20 bar and 200-300 °C, (GHSV of 4800 STP L∙kg∙cat-1∙h-1). Catalysts were characterized by several techniques including X-ray Diffraction (XRD), N2-physisorption, single-pulse N2O titrations, X-ray Photoelectron Spectroscopy (XPS), and Temperature-programmed Reduction with H2 (H2-TPR). Depending on preparation method, the results clearly diagnostics the occurrence of synergistic structural-electronic effects of cerium oxide on copper activity, with an optimal 0.5 copper-to-cerium content. The rise of CuO loading up to 30% drives to a considerable increase of hydrogenation activity: C2Z1-C catalyst obtains the best catalytic performance, reaching methanol yield value of 12% at 300 °C. Catalyst activity proceeds according to volcano-shaped relationships, in agreement with a dual sites mechanism. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). |
| first_indexed | 2024-03-11T22:51:07Z |
| format | Article |
| id | doaj.art-d15b8ce2cca64e0a9c63ec96d5ac7a1e |
| institution | Directory Open Access Journal |
| issn | 1978-2993 |
| language | English |
| last_indexed | 2024-03-11T22:51:07Z |
| publishDate | 2020-08-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj.art-d15b8ce2cca64e0a9c63ec96d5ac7a1e2023-09-22T03:39:01ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932020-08-0115239040410.9767/bcrec.15.2.7168.390-4043463Totally-green Fuels via CO2 HydrogenationLorenzo Spadaro0https://orcid.org/0000-0002-5754-9358Alessandra Palella1https://orcid.org/0000-0003-2400-2919Francesco Arena2Dipartimento di Ingegneria, Università degli Studi di Messina, Viale F. Stagno D’Alcontres 31, I-98166, Messina, ItalyIstituto CNR di Tecnologie Avanzate per l’Energia “Nicola Giordano”, Via S. Lucia sopra Contesse n.5, 98126 Messina, ItalyDipartimento di Ingegneria, Università degli Studi di Messina, Viale F. Stagno D’Alcontres 31, I-98166, Messina, ItalyHydrogen is the cleanest energy vector among any fuels, nevertheless, many aspects related to its distribution and storage still raise serious questions concerning costs, infrastructure and safety. On this account, the chemical storage of renewable-hydrogen by conversion into green-fuels, such as: methanol, via CO2 hydrogenation assumes a role of primary importance, also in the light of a cost-to-benefit analysis. Therefore, this paper investigates the effects of chemical composition on the structural properties, surface reactivity and catalytic pathway of ternary CuO-ZnO-CeO2 systems, shedding light on the structure-activity relationships. Thus, a series of CuZnCeO2 catalysts, at different CuO/CeO2 ratio (i.e. 0.2-1.2) were performed in the CO2 hydrogenation reactions at 20 bar and 200-300 °C, (GHSV of 4800 STP L∙kg∙cat-1∙h-1). Catalysts were characterized by several techniques including X-ray Diffraction (XRD), N2-physisorption, single-pulse N2O titrations, X-ray Photoelectron Spectroscopy (XPS), and Temperature-programmed Reduction with H2 (H2-TPR). Depending on preparation method, the results clearly diagnostics the occurrence of synergistic structural-electronic effects of cerium oxide on copper activity, with an optimal 0.5 copper-to-cerium content. The rise of CuO loading up to 30% drives to a considerable increase of hydrogenation activity: C2Z1-C catalyst obtains the best catalytic performance, reaching methanol yield value of 12% at 300 °C. Catalyst activity proceeds according to volcano-shaped relationships, in agreement with a dual sites mechanism. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).https://journal.bcrec.id/index.php/bcrec/article/view/7168renewable energyhydrogen-to-liquid-fuels (htl)carbon dioxide recyclingmethanol synthesis and synfuels |
| spellingShingle | Lorenzo Spadaro Alessandra Palella Francesco Arena Totally-green Fuels via CO2 Hydrogenation Bulletin of Chemical Reaction Engineering & Catalysis renewable energy hydrogen-to-liquid-fuels (htl) carbon dioxide recycling methanol synthesis and synfuels |
| title | Totally-green Fuels via CO2 Hydrogenation |
| title_full | Totally-green Fuels via CO2 Hydrogenation |
| title_fullStr | Totally-green Fuels via CO2 Hydrogenation |
| title_full_unstemmed | Totally-green Fuels via CO2 Hydrogenation |
| title_short | Totally-green Fuels via CO2 Hydrogenation |
| title_sort | totally green fuels via co2 hydrogenation |
| topic | renewable energy hydrogen-to-liquid-fuels (htl) carbon dioxide recycling methanol synthesis and synfuels |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/7168 |
| work_keys_str_mv | AT lorenzospadaro totallygreenfuelsviaco2hydrogenation AT alessandrapalella totallygreenfuelsviaco2hydrogenation AT francescoarena totallygreenfuelsviaco2hydrogenation |