Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2
Ni/Al2O3 and NiFe/Al2O3 catalysts were synthesized by incipient wetness impregnation and tested for oxidative dehydrogenation (ODH) of ethane to ethylene. The effect of Ni loading and Fe as a promoter for bimetallic catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, ultravi...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Chemical Engineering Journal Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821122001648 |
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| author | F. Cancino-Trejo Victor Santes Juan Alberto Alcantara Cardenas Marisol Gallardo Yadira G. Maldonado Lopéz. Miranda A Omar Valdes J.A. de los Reyes C.E. Santolalla-Vargas |
| author_facet | F. Cancino-Trejo Victor Santes Juan Alberto Alcantara Cardenas Marisol Gallardo Yadira G. Maldonado Lopéz. Miranda A Omar Valdes J.A. de los Reyes C.E. Santolalla-Vargas |
| author_sort | F. Cancino-Trejo |
| collection | DOAJ |
| description | Ni/Al2O3 and NiFe/Al2O3 catalysts were synthesized by incipient wetness impregnation and tested for oxidative dehydrogenation (ODH) of ethane to ethylene. The effect of Ni loading and Fe as a promoter for bimetallic catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), scanning electron microscopy (SEM), and temperature-programmed reduction (H2-TPR). The catalyst with 10 wt% Ni and 6.6 wt% Fe (NiFe32) displayed the highest ODH activity. XRD results showed smaller crystalline NiO (˂ 7 nm) for bimetallic catalysts than the monometallic ones. Raman results depicted NiOx species in the monometallic catalysts. The bimetallic catalysts exhibited spinel-type structures as NiFe2O4 and FeAl2O4 related to more active species in ODH of ethane. DRS results revealed that the higher ODH activity for bimetallic catalysts is related to a predominance of Ni and Fe in tetrahedral symmetry (Td) than octahedral symmetry (Oh). These suggest that tetrahedral symmetry species were more effective than octahedral symmetry. TPR profiles showed that the iron addition increased the nickel species with strong interaction with the support. This rearrangement of Ni and Fe species in octahedral and tetrahedral sites of the NiO and alumina lattice could explain the shift reduction temperatures for Ni species and the formation of the spinel-type structure in the bimetallic catalysts. A relation between the metal-support interaction and the selectivity toward ethylene was found. A higher strong metal-support interaction favors a better catalytic activity. |
| first_indexed | 2024-04-11T07:46:54Z |
| format | Article |
| id | doaj.art-2072824a67454733b297d4914c376280 |
| institution | Directory Open Access Journal |
| issn | 2666-8211 |
| language | English |
| last_indexed | 2024-04-11T07:46:54Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Engineering Journal Advances |
| spelling | doaj.art-2072824a67454733b297d4914c3762802022-12-22T04:36:15ZengElsevierChemical Engineering Journal Advances2666-82112022-11-0112100404Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2F. Cancino-Trejo0Victor Santes1Juan Alberto Alcantara Cardenas2Marisol Gallardo3Yadira G. Maldonado4Lopéz. Miranda A5Omar Valdes6J.A. de los Reyes7C.E. Santolalla-Vargas8Departamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional, Ciudad de México C.P. 07340, MexicoDepartamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional, Ciudad de México C.P. 07340, MexicoDepartamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional, Ciudad de México C.P. 07340, MexicoFacultad de Ingenieria, Universidad Autonoma de Coahuila, Blvd. Fundadores Km, 13 Ciudad Universitaria, Arteaga, Coahuila C. P. 25354, MexicoCentro Nacional de Metrología, Ciencia de Materiales, Km 4.5 Carretera a los Cues, El Marques, Querétaro, MexicoCentro Nacional de Metrología, Ciencia de Materiales, Km 4.5 Carretera a los Cues, El Marques, Querétaro, MexicoUniversidad A. Metropolitana-Iztapalapa, Area de Ingeniería Química, Av. FFCC R, Atlixco 186, Vicentina, Distrito Federal 09340, MexicoUniversidad A. Metropolitana-Iztapalapa, Area de Ingeniería Química, Av. FFCC R, Atlixco 186, Vicentina, Distrito Federal 09340, MexicoDepartamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional, Ciudad de México C.P. 07340, Mexico; Corresponding author.Ni/Al2O3 and NiFe/Al2O3 catalysts were synthesized by incipient wetness impregnation and tested for oxidative dehydrogenation (ODH) of ethane to ethylene. The effect of Ni loading and Fe as a promoter for bimetallic catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), scanning electron microscopy (SEM), and temperature-programmed reduction (H2-TPR). The catalyst with 10 wt% Ni and 6.6 wt% Fe (NiFe32) displayed the highest ODH activity. XRD results showed smaller crystalline NiO (˂ 7 nm) for bimetallic catalysts than the monometallic ones. Raman results depicted NiOx species in the monometallic catalysts. The bimetallic catalysts exhibited spinel-type structures as NiFe2O4 and FeAl2O4 related to more active species in ODH of ethane. DRS results revealed that the higher ODH activity for bimetallic catalysts is related to a predominance of Ni and Fe in tetrahedral symmetry (Td) than octahedral symmetry (Oh). These suggest that tetrahedral symmetry species were more effective than octahedral symmetry. TPR profiles showed that the iron addition increased the nickel species with strong interaction with the support. This rearrangement of Ni and Fe species in octahedral and tetrahedral sites of the NiO and alumina lattice could explain the shift reduction temperatures for Ni species and the formation of the spinel-type structure in the bimetallic catalysts. A relation between the metal-support interaction and the selectivity toward ethylene was found. A higher strong metal-support interaction favors a better catalytic activity.http://www.sciencedirect.com/science/article/pii/S2666821122001648Oxidative dehydrogenationEthyleneBimetallic catalystSpinel-type structureOctahedral symmetry (Oh)Tetrahedral symmetry (Td) |
| spellingShingle | F. Cancino-Trejo Victor Santes Juan Alberto Alcantara Cardenas Marisol Gallardo Yadira G. Maldonado Lopéz. Miranda A Omar Valdes J.A. de los Reyes C.E. Santolalla-Vargas Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 Chemical Engineering Journal Advances Oxidative dehydrogenation Ethylene Bimetallic catalyst Spinel-type structure Octahedral symmetry (Oh) Tetrahedral symmetry (Td) |
| title | Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 |
| title_full | Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 |
| title_fullStr | Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 |
| title_full_unstemmed | Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 |
| title_short | Active Ni and Fe species on catalysts Ni/Al2O3 and NiFe/Al2O3 for the oxidative dehydrogenation (ODH) of ethane to ethylene assisted by CO2 |
| title_sort | active ni and fe species on catalysts ni al2o3 and nife al2o3 for the oxidative dehydrogenation odh of ethane to ethylene assisted by co2 |
| topic | Oxidative dehydrogenation Ethylene Bimetallic catalyst Spinel-type structure Octahedral symmetry (Oh) Tetrahedral symmetry (Td) |
| url | http://www.sciencedirect.com/science/article/pii/S2666821122001648 |
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