Promoted ternary CuO-ZrO2-Al2O3 catalysts for methanol synthesis

• Authors: Paweł Mierczynski , Piotr Kaczorowski , Agnieszka Ura , Waldemar Maniukiewicz , Marcin Zaborowski , Radoslaw Ciesielski , Adam Kedziora , Tomasz Maniecki
• Languages of publication: EN

Abstracts

EN

Ternary CuO-ZrO2-Al2O3 catalysts promoted by palladium or gold were prepared and tested in CO hydrogenation reaction at 260°C under elevated pressure (4.8 MPa). The promotion effect of palladium or gold addition on the physicochemical and catalytical properties of CuO-ZrO2-Al2O3 catalysts in methanol synthesis (MS) was studied. The catalysts were characterized by BET, XRD, TPR-H2, TPD-NH3 methods. The BET results showed that the ternary system CuO-ZrO2-Al2O3 had the largest specific surface area, cumulative pore volume and average pore size in comparison with the promoted catalysts. The yield of methanol can be given through the following sequence: 5%Pd/CuO-ZrO2-Al2O3 > CuO-ZrO2-Al2O3 > 2%Au/CuO-ZrO2-Al2O3. We also found that the presence of gold or palladium on catalyst surface has strong influence on the reaction selectivity. The high selectivity of gold doped ternary catalyst is explained by the gold-oxide interface sites created on the catalyst surface and the acidity of those systems. The higher selectivity to methanol in the case of the palladium catalyst is explained by the spillover effect between Pd and CuO.

Keywords

EN

Methanol synthesis; Ternary systems; Copper catalyst; CuZrAl; Bimetallic catalysts

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2014
• Volume: 12
• Issue: 2
• Pages: 206-212

Dates

published

1 - 2 - 2014

online

27 - 11 - 2013

Contributors

author

Paweł Mierczynski

• Institute of General and Ecological Chemistry

author

Piotr Kaczorowski

• Institute of General and Ecological Chemistry

author

Agnieszka Ura

• Institute of General and Ecological Chemistry

author

Waldemar Maniukiewicz

• Institute of General and Ecological Chemistry

author

Marcin Zaborowski

• Institute of General and Ecological Chemistry

author

Radoslaw Ciesielski

• Institute of General and Ecological Chemistry

author

Adam Kedziora

• Institute of General and Ecological Chemistry

author

Tomasz Maniecki

• Institute of General and Ecological Chemistry

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Identifiers

DOI

10.2478/s11532-013-0368-3