ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT

ABSTRACT The activity of Fe2O3/Al2O3 catalysts prepared by impregnation of Al2O3 with different amounts of Fe and calcination temperatures (650 and 900 °C) in the direct N2O decomposition reaction was studied. High calcination temperature was introduced to study the effect of “aging&#8...

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Autores principales:	ALVAREZ,PABLO, ARAYA,PAULO, ROJAS,RENE, GUERRERO,SICHEM, AGUILA,GONZALO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	iron alumina impregnation method N2O decomposition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403752
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spelling	oai:scielo:S0717-970720170004037522018-04-02ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENTALVAREZ,PABLOARAYA,PAULOROJAS,RENEGUERRERO,SICHEMAGUILA,GONZALO iron alumina impregnation method N2O decomposition ABSTRACT The activity of Fe2O3/Al2O3 catalysts prepared by impregnation of Al2O3 with different amounts of Fe and calcination temperatures (650 and 900 °C) in the direct N2O decomposition reaction was studied. High calcination temperature was introduced to study the effect of “aging”, which are the conditions prevailing in the process-gas option for N2O abatement. The catalysts were characterized by BET, XRD, UV-DRS, and H2-TPR. The incorporation of Fe promotes the alumina phase transition (γ-Al2O3 to α-Al2O3) when the catalysts are calcined at 900 °C, which is accompanied by a decrease in the specific area. The activity of the catalysts and the specific surface area depend on Fe loading and calcination temperature. It was found that highly dispersed Fe species are more active than bulk type Fe2O3 particles. We conclude that Fe2O3/Al2O3 catalysts prepared by impregnation method are active in the decomposition of N2O, to be used at low or high reaction temperatures (tail-gas or process-gas treatments, respectively), as part of nitric acid production plant.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403752en10.4067/s0717-97072017000403752
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	iron alumina impregnation method N2O decomposition
spellingShingle	iron alumina impregnation method N2O decomposition ALVAREZ,PABLO ARAYA,PAULO ROJAS,RENE GUERRERO,SICHEM AGUILA,GONZALO ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
description	ABSTRACT The activity of Fe2O3/Al2O3 catalysts prepared by impregnation of Al2O3 with different amounts of Fe and calcination temperatures (650 and 900 °C) in the direct N2O decomposition reaction was studied. High calcination temperature was introduced to study the effect of “aging”, which are the conditions prevailing in the process-gas option for N2O abatement. The catalysts were characterized by BET, XRD, UV-DRS, and H2-TPR. The incorporation of Fe promotes the alumina phase transition (γ-Al2O3 to α-Al2O3) when the catalysts are calcined at 900 °C, which is accompanied by a decrease in the specific area. The activity of the catalysts and the specific surface area depend on Fe loading and calcination temperature. It was found that highly dispersed Fe species are more active than bulk type Fe2O3 particles. We conclude that Fe2O3/Al2O3 catalysts prepared by impregnation method are active in the decomposition of N2O, to be used at low or high reaction temperatures (tail-gas or process-gas treatments, respectively), as part of nitric acid production plant.
author	ALVAREZ,PABLO ARAYA,PAULO ROJAS,RENE GUERRERO,SICHEM AGUILA,GONZALO
author_facet	ALVAREZ,PABLO ARAYA,PAULO ROJAS,RENE GUERRERO,SICHEM AGUILA,GONZALO
author_sort	ALVAREZ,PABLO
title	ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
title_short	ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
title_full	ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
title_fullStr	ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
title_full_unstemmed	ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT
title_sort	activity of alumina supported fe catalysts for n2o decomposition: effects of the iron content and thermal treatment
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403752
work_keys_str_mv	AT alvarezpablo activityofaluminasupportedfecatalystsforn2odecompositioneffectsoftheironcontentandthermaltreatment AT arayapaulo activityofaluminasupportedfecatalystsforn2odecompositioneffectsoftheironcontentandthermaltreatment AT rojasrene activityofaluminasupportedfecatalystsforn2odecompositioneffectsoftheironcontentandthermaltreatment AT guerrerosichem activityofaluminasupportedfecatalystsforn2odecompositioneffectsoftheironcontentandthermaltreatment AT aguilagonzalo activityofaluminasupportedfecatalystsforn2odecompositioneffectsoftheironcontentandthermaltreatment
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ACTIVITY OF ALUMINA SUPPORTED Fe CATALYSTS FOR N2O DECOMPOSITION: EFFECTS OF THE IRON CONTENT AND THERMAL TREATMENT

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