In situ temperature measurements in microwave-heated gassolid catalytic systems. Detection of hot spots and solid-fluid temperature gradients in the ethylene epoxidation reaction

Ramírez, A. (Universidad de Zaragoza) ; Hueso, J.L. ; Mallada, R. (Universidad de Zaragoza) ; Santamaria, J. (Universidad de Zaragoza)

Resumen: Infrared thermographic techniques have been used for the first time to determine real-time gas and solid temperatures, as well as gas- solid temperature gradients in microwave heated structured reactors. A special reactor vessel has been developed that allows direct observation of the catalyst under microwave heating, and an operating procedure is presented to obtain gas and solid apparent emissivities as a function of temperature. These values are thereafter used to calculate temperatures at any point in the gas and solid phases under reaction. The method has been used to obtain gas and solid temperatures during the ethylene epoxidation reaction carried out on a silver-copper oxide catalyst. The direct heating of the monolith walls produced a stable, large temperature gradient between the solid and the gas phase.

Idioma: Inglés

DOI: 10.1016/j.cej.2017.01.077

Año: 2017

Publicado en: Chemical Engineering Journal 316 (2017), 50-60
ISSN: 1385-8947

Factor impacto JCR: 6.735 (2017)

Categ. JCR: ENGINEERING, ENVIRONMENTAL rank: 3 / 50 = 0.06 (2017) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 7 / 137 = 0.051 (2017) - Q1 - T1

Factor impacto SCIMAGO: 1.863 - 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: Article (PostPrint)

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