Escaping undesired gas-phase chemistry: Microwave-driven selectivity enhancement in heterogeneous catalytic reactors
Ramirez, A. ; Hueso, J.L. ; Abian, M. (Universidad de Zaragoza) ; Alzueta, M.U. (Universidad de Zaragoza) ; Mallada, R. (Universidad de Zaragoza) ; Santamaria, J. (Universidad de Zaragoza)
Resumen: Research in solid-gas heterogeneous catalytic processes is typically aimed toward optimization of catalyst composition to achieve a higher conversion and, especially, a higher selectivity. However, even with the most selective catalysts, an upper limit is found: Above a certain temperature, gas-phase reactions become important and their effects cannot be neglected. Here, we apply a microwave field to a catalyst-support ensemble capable of direct microwave heating (MWH). We have taken extra precautions to ensure that (i) the solid phase is free from significant hot spots and (ii) an accurate estimation of both solid and gas temperatures is obtained. MWH allows operating with a catalyst that is significantly hotter than the surrounding gas, achieving a high conversion on the catalyst while reducing undesired homogeneous reactions. We demonstrate the concept with the CO 2 -mediated oxidative dehydrogenation of isobutane, but it can be applied to any system with significant undesired homogeneous contributions.
Idioma: Inglés
DOI: 10.1126/sciadv.aau9000
Año: 2019
Publicado en: Science advances 5, 3 (2019), eaau9000 [7 pp]
ISSN: 2375-2548
Factor impacto JCR: 13.116 (2019)
Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 4 / 71 = 0.056 (2019) - Q1 - T1
Factor impacto SCIMAGO: 6.062 - Multidisciplinary (Q1)
Financiación: info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2015-65226
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1126/sciadv.aau9000
Año: 2019
Publicado en: Science advances 5, 3 (2019), eaau9000 [7 pp]
ISSN: 2375-2548
Factor impacto JCR: 13.116 (2019)
Categ. JCR: MULTIDISCIPLINARY SCIENCES rank: 4 / 71 = 0.056 (2019) - Q1 - T1
Factor impacto SCIMAGO: 6.062 - Multidisciplinary (Q1)
Financiación: info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/CTQ2015-65226
Tipo y forma: Article (Published version)
Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2023-09-26-09:29:41)
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Articles > Artículos por área > Tecnologías del Medio Ambiente
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Record created 2019-04-12, last modified 2023-09-26