Artículo
Enhancement of the catalytic performance to methanol synthesis from CO2/H2 by gallium addition to palladium/silica catalysts
Fecha de publicación:
12/2000
Editorial:
Elsevier Science
Revista:
Studies In Surface Science And Catalysis
ISSN:
0167-2991
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The hydrogenation of CO2 was investigated on Ga-promoted Pd/SiO2 catalysts. A 500-fold turnover rate enhancement and an increase of the selectivity to methanol synthesis, up to 70%, were found under pseudo stationary state conditions (523 K and 3 MPa) using the promoted materials as compared to Pd/SiO2. Based on apparent activation energy values and product distribution, a reaction pathway to CH3OH involving intermediates which are intrinsically associated to adsorbed CO2 is proposed. It is concluded that the Ga-Pd interaction, proved through DRS and TPR experiments, brings the catalytic performance of these Ga-Pd/silica materials close to that of the traditional Cu/ZnO-based catalyst for methanol synthesis.
Palabras clave:
Methanol Synthesis
,
Carbon Dioxide
,
Palladium
,
Silica
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Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Bonivardi, Adrian Lionel; Chiavassa, Dante Luis; Querini, Carlos Alberto; Baltanas, Miguel Angel; Enhancement of the catalytic performance to methanol synthesis from CO2/H2 by gallium addition to palladium/silica catalysts; Elsevier Science; Studies In Surface Science And Catalysis; 130; 12-2000; 3747-3752
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