Effect of pressure on the mechanisms of the CO2/H2 reaction on a CO-precipitated CuO/ZnO/Al2O3 catalyst

Effect of pressure on the mechanisms of the CO2/H2 reaction on a CO-precipitated CuO/ZnO/Al2O3 catalyst

The influence of working pressure on the mechanisms of the CO 2 /H 2 reaction on a co-precipitated CuO/ZnO/Al 2 O 3 catalyst have been studied at 230 °C and in the pressure range of 1–75 bar. In the CO 2 hydrogenation using CuO/ZnO/Al 2 O 3 , the products were found to be CO, methanol and water almo...

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Veröffentlicht in:Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2011-08, Vol.103 (2), p.391-403
Hauptverfasser: Sahki, Rachid, Benlounes, Ouarda, Chérifi, Ouiza, Thouvenot, René, Bettahar, Mohammed M., Hocine, Smain
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Physical Chemistry
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Zusammenfassung:The influence of working pressure on the mechanisms of the CO 2 /H 2 reaction on a co-precipitated CuO/ZnO/Al 2 O 3 catalyst have been studied at 230 °C and in the pressure range of 1–75 bar. In the CO 2 hydrogenation using CuO/ZnO/Al 2 O 3 , the products were found to be CO, methanol and water almost exclusively. Only a trace of methane formation was observed. Methanol and carbon monoxide are competitively formed. The former is produced directly from CO 2 whatever the pressure whereas carbon monoxide stems either from CO 2 directly at high pressure or both methanol decomposition and CO 2 directly at low pressure.
ISSN:1878-5190
1878-5204
DOI:10.1007/s11144-011-0311-6