IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO

A series of Co3O4-CeO2 supports with different Co/Ce ratio have been synthesized by using polyethyleneglycol (PEG) as a surfactant. The catalytic performance tests indicated the activity of the catalysts is better than the corresponding support. In addition, CuO/(0.7)Co3O4-CeO2 displayed the best ac...

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Autores principales:	WANG,RUI, CHEN,CHAO, DENG,SHENGJUN, SHEN,PAN, GONG,LEI, ZHANG,NING
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2014
Materias:	Co/Ce ratio CuO/Co3O4-CeO2 H2-rich gases Preferential oxidation of CO
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000400017
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id	oai:scielo:S0717-97072014000400017
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spelling	oai:scielo:S0717-970720140004000172015-01-09IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIOWANG,RUICHEN,CHAODENG,SHENGJUNSHEN,PANGONG,LEIZHANG,NING Co/Ce ratio CuO/Co3O4-CeO2 H2-rich gases Preferential oxidation of CO A series of Co3O4-CeO2 supports with different Co/Ce ratio have been synthesized by using polyethyleneglycol (PEG) as a surfactant. The catalytic performance tests indicated the activity of the catalysts is better than the corresponding support. In addition, CuO/(0.7)Co3O4-CeO2 displayed the best activity with 100% CO conversion and 93% O2 selectivity at 120 °C. Furthermore, the stability test of CuO/(0.7)Co3O4-CeO2 expressed the activity can be retained at 80% for 80h at 100 °C. Catalysts and supports were characterized by BET, XRD, TPR and TPD techniques. Discussion of the results showed that the strongest lattice distortion and the best reducibility of Co3O4-CeO2 supports were both negative factors for the catalytic activity. More precisely, an appropriate Co/Ce ratio can restrain the stronger interaction between cobalt oxide and ceria to promote the formation of reducible copper species.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.59 n.4 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000400017en10.4067/S0717-97072014000400017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Co/Ce ratio CuO/Co3O4-CeO2 H2-rich gases Preferential oxidation of CO
spellingShingle	Co/Ce ratio CuO/Co3O4-CeO2 H2-rich gases Preferential oxidation of CO WANG,RUI CHEN,CHAO DENG,SHENGJUN SHEN,PAN GONG,LEI ZHANG,NING IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
description	A series of Co3O4-CeO2 supports with different Co/Ce ratio have been synthesized by using polyethyleneglycol (PEG) as a surfactant. The catalytic performance tests indicated the activity of the catalysts is better than the corresponding support. In addition, CuO/(0.7)Co3O4-CeO2 displayed the best activity with 100% CO conversion and 93% O2 selectivity at 120 °C. Furthermore, the stability test of CuO/(0.7)Co3O4-CeO2 expressed the activity can be retained at 80% for 80h at 100 °C. Catalysts and supports were characterized by BET, XRD, TPR and TPD techniques. Discussion of the results showed that the strongest lattice distortion and the best reducibility of Co3O4-CeO2 supports were both negative factors for the catalytic activity. More precisely, an appropriate Co/Ce ratio can restrain the stronger interaction between cobalt oxide and ceria to promote the formation of reducible copper species.
author	WANG,RUI CHEN,CHAO DENG,SHENGJUN SHEN,PAN GONG,LEI ZHANG,NING
author_facet	WANG,RUI CHEN,CHAO DENG,SHENGJUN SHEN,PAN GONG,LEI ZHANG,NING
author_sort	WANG,RUI
title	IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
title_short	IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
title_full	IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
title_fullStr	IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
title_full_unstemmed	IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO
title_sort	improvement of preferential co oxidation activity over cuo/co3o4-ceo2 catalysts: effect of co/ce ratio
publisher	Sociedad Chilena de Química
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072014000400017
work_keys_str_mv	AT wangrui improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio AT chenchao improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio AT dengshengjun improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio AT shenpan improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio AT gonglei improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio AT zhangning improvementofpreferentialcooxidationactivityovercuoco3o4ceo2catalystseffectofcoceratio
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IMPROVEMENT OF PREFERENTIAL CO OXIDATION ACTIVITY OVER CUO/CO3O4-CEO2 CATALYSTS: EFFECT OF CO/CE RATIO

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