EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS

The CeO2-MnOx mixed oxides were prepared by deposition-precipitation (DP) and surfactant-templated (CB) methods, and then used as the support of CuO/ CeO2-MnOx catalysts. The samples were characterized by means of XRD, BET, H2-TPR, CO-TPD and XPS. Results show that preparation methods of CeO2-MnOx s...

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Autores principales:	GONG,LEI, LUO,LAI-TAO, WANG,RUI, ZHANG,NING
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2012
Materias:	CuO/CeO2-MnOx catalyst Preparation method of CeO2-MnOx CO oxidation In H2-rich gases
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100020
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spelling	oai:scielo:S0717-970720120001000202012-07-19EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTSGONG,LEILUO,LAI-TAOWANG,RUIZHANG,NING CuO/CeO2-MnOx catalyst Preparation method of CeO2-MnOx CO oxidation In H2-rich gases The CeO2-MnOx mixed oxides were prepared by deposition-precipitation (DP) and surfactant-templated (CB) methods, and then used as the support of CuO/ CeO2-MnOx catalysts. The samples were characterized by means of XRD, BET, H2-TPR, CO-TPD and XPS. Results show that preparation methods of CeO2-MnOx support have a direct effect on the physicochemical properties and catalytic activities of CuO/CeO2-MnOx catalysts for the CO preferential oxidation in H2-rich gases(CO PROX). CuO/CeO2-MnOx (CB) catalyst exhibits higher CO conversion and stability in H2-rich gases than CuO/CeO2-MnOx (DP), with 100% conversion of CO at 140 °C after a temperature cycle, which indicates that CeO2-MnOx (CB) as support of CuO based catalyst is more useful for CO PROX reaction than CeO2-MnOx (DP). Compared with CuO/CeO2-MnOx (DP), there are richer oxygen vacancies and more Mn4+ species on the surface of CuO/CeO2-MnOx (CB), and stronger interaction between CeO2 and MnOx in it. More amounts of active copper species and complicated transfer of electrons density on CuO/CeO2-MnOx (CB) also favour the activity of the catalyst.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.1 20122012-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100020en10.4067/S0717-97072012000100020
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	CuO/CeO2-MnOx catalyst Preparation method of CeO2-MnOx CO oxidation In H2-rich gases
spellingShingle	CuO/CeO2-MnOx catalyst Preparation method of CeO2-MnOx CO oxidation In H2-rich gases GONG,LEI LUO,LAI-TAO WANG,RUI ZHANG,NING EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
description	The CeO2-MnOx mixed oxides were prepared by deposition-precipitation (DP) and surfactant-templated (CB) methods, and then used as the support of CuO/ CeO2-MnOx catalysts. The samples were characterized by means of XRD, BET, H2-TPR, CO-TPD and XPS. Results show that preparation methods of CeO2-MnOx support have a direct effect on the physicochemical properties and catalytic activities of CuO/CeO2-MnOx catalysts for the CO preferential oxidation in H2-rich gases(CO PROX). CuO/CeO2-MnOx (CB) catalyst exhibits higher CO conversion and stability in H2-rich gases than CuO/CeO2-MnOx (DP), with 100% conversion of CO at 140 °C after a temperature cycle, which indicates that CeO2-MnOx (CB) as support of CuO based catalyst is more useful for CO PROX reaction than CeO2-MnOx (DP). Compared with CuO/CeO2-MnOx (DP), there are richer oxygen vacancies and more Mn4+ species on the surface of CuO/CeO2-MnOx (CB), and stronger interaction between CeO2 and MnOx in it. More amounts of active copper species and complicated transfer of electrons density on CuO/CeO2-MnOx (CB) also favour the activity of the catalyst.
author	GONG,LEI LUO,LAI-TAO WANG,RUI ZHANG,NING
author_facet	GONG,LEI LUO,LAI-TAO WANG,RUI ZHANG,NING
author_sort	GONG,LEI
title	EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
title_short	EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
title_full	EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
title_fullStr	EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
title_full_unstemmed	EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS
title_sort	effect of preparation methods of ceo2-mnox mixed oxides on preferential oxidation of co in h2-rich gases over cuo-based catalysts
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000100020
work_keys_str_mv	AT gonglei effectofpreparationmethodsofceo2mnoxmixedoxidesonpreferentialoxidationofcoinh2richgasesovercuobasedcatalysts AT luolaitao effectofpreparationmethodsofceo2mnoxmixedoxidesonpreferentialoxidationofcoinh2richgasesovercuobasedcatalysts AT wangrui effectofpreparationmethodsofceo2mnoxmixedoxidesonpreferentialoxidationofcoinh2richgasesovercuobasedcatalysts AT zhangning effectofpreparationmethodsofceo2mnoxmixedoxidesonpreferentialoxidationofcoinh2richgasesovercuobasedcatalysts
_version_	1718445461824602112

EFFECT OF PREPARATION METHODS OF CeO2-MnOx MIXED OXIDES ON PREFERENTIAL OXIDATION OF CO IN H2-RICH GASES OVER CuO-BASED CATALYSTS

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