Maja Pori (Author), Iztok Arčon (Author), Damjan Lašič Jurković (Author), Marjan Marinšek (Author), Goran Dražić (Author), Blaž Likozar (Author), Zorica Crnjak Orel (Author)

Abstract

The process of methanol synthesis based on the hydrogenation of CO2 was investigated over binary Cu/ZnO catalyst materials, prepared by applying a novel electroless plating fabrication method. The activity of the produced catalytic samples was determined at temperature range between 200 and 300 °C and the feedstock conversion data were supplemented with a detailed microstructure analysis using high-resolution transmission electron microscopy (HRTEM), X-ray powder diffraction (XRD) and Cu and Zn K-edge, X-ray absorption near-edge structure (XANES) measurements and extended X-ray absorption fine-structure (EXAFS) measurements. It was confirmed that the disorder in the Cu crystallites created unique geometrical situations, which acted as the additional reactive centres for the adsorption of the reactant molecule species. Copper and zinc structural synergy (spill-over) was also demonstrated as being crucial for the carbon dioxide’s activation. EXAFS and XANES results provide strong evidence for surface alloying between copper and zinc and thus the present results demonstrate new approach applicable for explaining metal–support interactions.

Keywords

EXAFS;CuZn alloy;spillover mechanism;CO2 valorization;electroless deposition method;heterogeneous catalysis;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: KI - National Institute of Chemistry
UDC: 53
COBISS: 5371899 Link will open in a new window
ISSN: 1011-372X
Views: 2866
Downloads: 0
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Other data

URN: URN:SI:UNG
Type (COBISS): Not categorized
Pages: str. 1427-1439
Volume: ǂVol. ǂ149
Issue: ǂiss. ǂ5
Chronology: May 2019
DOI: 10.1007/s10562-019-02717-7
ID: 11109764