Microwave-activated structured reactors to maximize propylene selectivity in the oxidative dehydrogenation of propane

Ramírez, Adrián ; Hueso, José Luis ; Mallada, Reyes (Universidad de Zaragoza) ; Santamaría, Jesús (Universidad de Zaragoza)

Resumen: Microwave (MW) heating has been applied to increase the selectivity to propylene in the oxidative dehydrogenation (ODH) of propane. The preferential heating of the solid monolith (made of SiC, a good microwave susceptor), allows working with a lower gas phase temperature, reducing the formation of undesired by-products in the gas phase via homogeneous reactions. Conversion levels of ~ 21% and selectivity to propylene up to 70% have been achieved with MW-heated straight channel monolithic reactors coated with a VMgO catalyst. These competitive values contrast with the more limited performance delivered by the same catalytic system when it is subjected to conventional heating in a fixed-bed reactor configuration, thereby corroborating the advantage of working under a significant gas–solid temperature gap to minimize the extent of homogeneous reactions.

Idioma: Inglés

DOI: 10.1016/j.cej.2020.124746

Año: 2020

Publicado en: CHEMICAL ENGINEERING JOURNAL 393 (2020), 124746
ISSN: 1385-8947

Factor impacto JCR: 13.273 (2020)

Categ. JCR: ENGINEERING, ENVIRONMENTAL rank: 2 / 53 = 0.038 (2020) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 4 / 143 = 0.028 (2020) - Q1 - T1

Factor impacto SCIMAGO: 2.528 - Chemical Engineering (miscellaneous) (Q1) - Industrial and Manufacturing Engineering (Q1) - Environmental Chemistry (Q1) - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)