000064433 001__ 64433 000064433 005__ 20190709135512.0 000064433 0247_ $$2doi$$a10.1016/j.cej.2017.01.077 000064433 0248_ $$2sideral$$a97692 000064433 037__ $$aART-2017-97692 000064433 041__ $$aeng 000064433 100__ $$0(orcid)0000-0001-5036-1355$$aRamírez, A.$$uUniversidad de Zaragoza 000064433 245__ $$aIn situ temperature measurements in microwave-heated gassolid catalytic systems. Detection of hot spots and solid-fluid temperature gradients in the ethylene epoxidation reaction 000064433 260__ $$c2017 000064433 5060_ $$aAccess copy available to the general public$$fUnrestricted 000064433 5203_ $$aInfrared 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. 000064433 536__ $$9info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626 000064433 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000064433 590__ $$a6.735$$b2017 000064433 591__ $$aENGINEERING, ENVIRONMENTAL$$b3 / 50 = 0.06$$c2017$$dQ1$$eT1 000064433 591__ $$aENGINEERING, CHEMICAL$$b7 / 137 = 0.051$$c2017$$dQ1$$eT1 000064433 592__ $$a1.863$$b2017 000064433 593__ $$aChemical Engineering (miscellaneous)$$c2017$$dQ1 000064433 593__ $$aIndustrial and Manufacturing Engineering$$c2017$$dQ1 000064433 593__ $$aEnvironmental Chemistry$$c2017$$dQ1 000064433 593__ $$aChemistry (miscellaneous)$$c2017$$dQ1 000064433 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000064433 700__ $$0(orcid)0000-0002-4546-4111$$aHueso, J.L. 000064433 700__ $$0(orcid)0000-0002-4758-9380$$aMallada, R.$$uUniversidad de Zaragoza 000064433 700__ $$0(orcid)0000-0002-8701-9745$$aSantamaria, J.$$uUniversidad de Zaragoza 000064433 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química 000064433 773__ $$g316 (2017), 50-60$$pChem. eng. j.$$tChemical Engineering Journal$$x1385-8947 000064433 8564_ $$s2795224$$uhttps://zaguan.unizar.es/record/64433/files/texto_completo.pdf$$yPostprint 000064433 8564_ $$s70586$$uhttps://zaguan.unizar.es/record/64433/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000064433 909CO $$ooai:zaguan.unizar.es:64433$$particulos$$pdriver 000064433 951__ $$a2019-07-09-11:52:29 000064433 980__ $$aARTICLE