Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3...
| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2007
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/99917 https://ri.conicet.gov.ar/11336/16655 http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-07932007000400008&lng=es&nrm=iso&tlng=en |
| Aporte de: |
| id |
I19-R120-10915-99917 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química Preferential oxidation Hydrogen purification Ptsn/y-AI2O3 |
| spellingShingle |
Química Preferential oxidation Hydrogen purification Ptsn/y-AI2O3 Siri, Guillermo Jorge Bertolini, Guillermo Ramón Ferretti, Osmar Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| topic_facet |
Química Preferential oxidation Hydrogen purification Ptsn/y-AI2O3 |
| description |
The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts
studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3 with a ratio Sn/Pt=1.6 at/at and two catalysts prepared by modification of the last one with K or Ba. The catalyst that showed maximum activity and selectivity levels is the PtSnK/y -Al2O3. The tin addition increases the activity which allows the reaction to occur at lower temperatures due to the decrease in the CO-Pt interaction. The addition
of K or Ba produces a subsequent improvement with respect to the CO oxidation temperature, which leads to a selectivity increase. The selectivity of the CO oxidation passes through a maximum value as a function of the temperature. This maximum is explained by the importance acquired by the reverse of water gas shift reaction at temperatures near 200ºC |
| format |
Articulo Articulo |
| author |
Siri, Guillermo Jorge Bertolini, Guillermo Ramón Ferretti, Osmar |
| author_facet |
Siri, Guillermo Jorge Bertolini, Guillermo Ramón Ferretti, Osmar |
| author_sort |
Siri, Guillermo Jorge |
| title |
Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| title_short |
Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| title_full |
Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| title_fullStr |
Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| title_full_unstemmed |
Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba |
| title_sort |
preferential oxidation of co in presence of h2: behavior of ptsn/y-al2o3 catalysts modified by k or ba |
| publishDate |
2007 |
| url |
http://sedici.unlp.edu.ar/handle/10915/99917 https://ri.conicet.gov.ar/11336/16655 http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-07932007000400008&lng=es&nrm=iso&tlng=en |
| work_keys_str_mv |
AT siriguillermojorge preferentialoxidationofcoinpresenceofh2behaviorofptsnyal2o3catalystsmodifiedbykorba AT bertoliniguillermoramon preferentialoxidationofcoinpresenceofh2behaviorofptsnyal2o3catalystsmodifiedbykorba AT ferrettiosmar preferentialoxidationofcoinpresenceofh2behaviorofptsnyal2o3catalystsmodifiedbykorba |
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Repositorios |
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1764820493436715011 |