EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS

Titania-supported iron (1wt%) catalysts were prepared by the sol-gel method using different gelation pH (3 and 9), metal precursors (FeCl2 and FeCl3) and calcination temperatures (873 and 1073K). Characterization data of calcined catalysts revealed that in all samples the dominant iron species is Fe...

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Autores principales:	Pecchi,G., Reyes,P., López,T., Gómez,R., Moreno,A., Fierro,J.L.G.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2002
Materias:	Iron catalysts sol-gel titanium oxide combustion methane
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200017
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spelling	oai:scielo:S0366-164420020002000172002-10-14EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTSPecchi,G.Reyes,P.López,T.Gómez,R.Moreno,A.Fierro,J.L.G. Iron catalysts sol-gel titanium oxide combustion methane Titania-supported iron (1wt%) catalysts were prepared by the sol-gel method using different gelation pH (3 and 9), metal precursors (FeCl2 and FeCl3) and calcination temperatures (873 and 1073K). Characterization data of calcined catalysts revealed that in all samples the dominant iron species is Fe3+ and the crystalline phase of the TiO2 substrate depends on the gelation pH and the metal precursor used. It was found that in the Fe/TiO2 ex-FeCl3 samples an important part of the iron ions became inserted in titania lattice, which makes the anatase phase stable even at high calcination temperatures. The solids were tested in the combustion of methane under stoichiometric conditions at atmospheric pressure. It was observed that the Fe/TiO2 ex-FeCl2 sample displays the highest activity. This behaviour is explained on the basis of the highest fraction of iron oxide deposited on the external surface of the catalyst particlesinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.47 n.2 20022002-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200017en10.4067/S0366-16442002000200017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Iron catalysts sol-gel titanium oxide combustion methane
spellingShingle	Iron catalysts sol-gel titanium oxide combustion methane Pecchi,G. Reyes,P. López,T. Gómez,R. Moreno,A. Fierro,J.L.G. EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
description	Titania-supported iron (1wt%) catalysts were prepared by the sol-gel method using different gelation pH (3 and 9), metal precursors (FeCl2 and FeCl3) and calcination temperatures (873 and 1073K). Characterization data of calcined catalysts revealed that in all samples the dominant iron species is Fe3+ and the crystalline phase of the TiO2 substrate depends on the gelation pH and the metal precursor used. It was found that in the Fe/TiO2 ex-FeCl3 samples an important part of the iron ions became inserted in titania lattice, which makes the anatase phase stable even at high calcination temperatures. The solids were tested in the combustion of methane under stoichiometric conditions at atmospheric pressure. It was observed that the Fe/TiO2 ex-FeCl2 sample displays the highest activity. This behaviour is explained on the basis of the highest fraction of iron oxide deposited on the external surface of the catalyst particles
author	Pecchi,G. Reyes,P. López,T. Gómez,R. Moreno,A. Fierro,J.L.G.
author_facet	Pecchi,G. Reyes,P. López,T. Gómez,R. Moreno,A. Fierro,J.L.G.
author_sort	Pecchi,G.
title	EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
title_short	EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
title_full	EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
title_fullStr	EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
title_full_unstemmed	EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS
title_sort	effect of chlorine precursor in surface and catalytic properties of fe/tio2 catalysts
publisher	Sociedad Chilena de Química
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200017
work_keys_str_mv	AT pecchig effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts AT reyesp effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts AT lopezt effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts AT gomezr effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts AT morenoa effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts AT fierrojlg effectofchlorineprecursorinsurfaceandcatalyticpropertiesoffetio2catalysts
_version_	1718438146126905344

EFFECT OF CHLORINE PRECURSOR IN SURFACE AND CATALYTIC PROPERTIES OF Fe/TiO2 CATALYSTS

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