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Methanol Synthesis from CO2 and H2 Mixture over 60 per cent Cu/support (FeAlO3, ZnAl2O4) Catalysts

Maniecki T. P., Mierczyński P., Bawolak-Olczak K., Jóźwiak W. K.

Polish Journal of Chemistry

2009

Vol. 83, nr 9

1653-1662

The aim of this work was to determine the correlation between catalytical activity of copper supported catalysts 60 per cent Cu/support (FeAlO3, ZnAl2O4) in methanol synthesis and their physicochemical properties. Surface area measurements (BET), X-ray diffraction (XRD) and temperature-programmed reduction (TPR-H2) techniques were used to study the physicochemical properties of Cu/support catalysts. The activity tests in methanol synthesis were carried out over copper catalysts in the temperature range 180–260 graduate C at elevated pressure (4 MPa) in a fixed bed reactor. Monometallic supported catalyst 60 per cent Cu/FeAlO3 was more active, but less selective in comparison with 60 per cent Cu/ZnAl2O4 catalyst in methanol synthesis. The XRD results confirmed the presence of binary oxide (ZnAl2O4 and FeAlO3), copper oxide, alfa-Fe2O3 and ZnO for appreciate copper supported catalysts. A reduction study of copper catalyst confirmed two step of copper oxide reduction (Cu2+ rightwards arrow Cu+rightwards arrow Cu0).

Methanol Synthesis from Mixture of CO, CO2 and H2 under Atmospheric Pressure over Au, Ag-Cu/FeAlO3 Supported Catalysts

Maniecki T. P., Mierczyński P., Maniukiewicz W., Bawolak K., Gebauer D., Jóźwiak W. K.

Polish Journal of Chemistry

2008

Vol. 82, nr 12

2379-2388

The influence of copper and noble metal (Ag, Au) addition on the physicochemical properties of support FeAlO3 and supported metal catalysts was studied. The reaction of methanol formation in the temperature range 200-380 graduate C under atmospheric pressure over a series of Cu and M-Cu catalysts (where M = Ag, Au) has been investigated. The presence of spinel like type structures FeAlO3, Fe2AlO4 and FeAl2O4 was confirmed by XRD technique. The physicochemical properties of supports and supported copper and bimetallic Ag, Au-Cu/FeAlO3 catalysts were examined by BET, TPR, and XRD methods.