EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES
The effect of lower Cu (≤ 30%) substitution on alkaline earth zirconate (A1-xCu xZrO3; A=Ca; Sr) perovskites prepared via a citrate route and calcined at 700°C has been investigated as catalysts for total acetyl acetate combustion. The thermal behaviour indicates a beneficial effect of Cu...
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Sociedad Chilena de Química
2013
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oai:scielo:S0717-970720130004000062014-09-02EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDESPECCHI,GINAMORALES,RUDDY zirconate calcium strontium copper perovskites acetyl acetate The effect of lower Cu (≤ 30%) substitution on alkaline earth zirconate (A1-xCu xZrO3; A=Ca; Sr) perovskites prepared via a citrate route and calcined at 700°C has been investigated as catalysts for total acetyl acetate combustion. The thermal behaviour indicates a beneficial effect of Cu in order to decrease the decomposition temperature of Ca and Sr zirconates. The characterization of the solids by atomic absorption spectroscopy (AAS), BET area, SEM, XRD, O2-DTP and TPR indicates for the Sr series presence crystalline CuO phase in the copper strontium zirconates, meanwhile almost highly dispersed CuO is detected in the Ca series. Two effects explain the increases in the total acetylacetate combustion of Ca and Sr zirconates upon copper content. For one hand, in the Ca series, highly dispersed CuO phase, easier to be reduced increases the catalytic activity, meanwhile for the Sr series, a large extent of oxygen vacancies explains the catalytic effect.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400006en10.4067/S0717-97072013000400006 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
zirconate calcium strontium copper perovskites acetyl acetate |
| spellingShingle |
zirconate calcium strontium copper perovskites acetyl acetate PECCHI,GINA MORALES,RUDDY EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| description |
The effect of lower Cu (≤ 30%) substitution on alkaline earth zirconate (A1-xCu xZrO3; A=Ca; Sr) perovskites prepared via a citrate route and calcined at 700°C has been investigated as catalysts for total acetyl acetate combustion. The thermal behaviour indicates a beneficial effect of Cu in order to decrease the decomposition temperature of Ca and Sr zirconates. The characterization of the solids by atomic absorption spectroscopy (AAS), BET area, SEM, XRD, O2-DTP and TPR indicates for the Sr series presence crystalline CuO phase in the copper strontium zirconates, meanwhile almost highly dispersed CuO is detected in the Ca series. Two effects explain the increases in the total acetylacetate combustion of Ca and Sr zirconates upon copper content. For one hand, in the Ca series, highly dispersed CuO phase, easier to be reduced increases the catalytic activity, meanwhile for the Sr series, a large extent of oxygen vacancies explains the catalytic effect. |
| author |
PECCHI,GINA MORALES,RUDDY |
| author_facet |
PECCHI,GINA MORALES,RUDDY |
| author_sort |
PECCHI,GINA |
| title |
EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| title_short |
EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| title_full |
EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| title_fullStr |
EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| title_full_unstemmed |
EFFECT OF COOPER ON THE CATALYTIC ACTIVITY FOR ACETYLACETATE COMBUSTION OF Ca1-x Cu xZrO3 AND Sr1-xCu xZrO3 PEROVSKITE-TYPE OXIDES |
| title_sort |
effect of cooper on the catalytic activity for acetylacetate combustion of ca1-x cu xzro3 and sr1-xcu xzro3 perovskite-type oxides |
| publisher |
Sociedad Chilena de Química |
| publishDate |
2013 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400006 |
| work_keys_str_mv |
AT pecchigina effectofcooperonthecatalyticactivityforacetylacetatecombustionofca1xcuxzro3andsr1xcuxzro3perovskitetypeoxides AT moralesruddy effectofcooperonthecatalyticactivityforacetylacetatecombustionofca1xcuxzro3andsr1xcuxzro3perovskitetypeoxides |
| _version_ |
1718445497325191168 |