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42. Photo-Chemically-Deposited and Industrial Cu/ZnO/Al2O3 Catalyst Material Surface Structures During CO2 Hydrogenation to Methanol: EXAFS, XANES and XPS Analyses of Phases After Oxidation, Reduction, and ReactionMaja Pori, Iztok Arčon, Venkata Dasireddy, Blaž Likozar, 2021, original scientific article Abstract: Industrial Cu/ZnO/Al2O3 or novel rate catalysts, prepared with a photochemical deposition method, were studied under functional CH3OH synthesis conditions at the set temperature (T) range of 240–350 °C, 20 bar pressure, and stoichiometric carbon dioxide/hydrogen composition. Analytical scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray adsorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) methods were systematically utilized to investigate the interfaces, measured local geometry, and chemical state electronics around the structured active sites of commercially available Cu/ZnO/Al2O3 material or synthesized Cu/ZnO. Processed Cu K-edge EXAFS analysis suggested that various Cu atom species, clusters, metallic fcc Cu, Cu oxides (Cu2O or CuO) and the Cu0.7Zn2 alloy with hexagonal crystalline particles are contained after testing. It was proposed that in addition to the model’s Cu surface area, the amount, ratio and dispersion of the mentioned bonded Cu compounds significantly influenced activity. Additionally, XPS revealed that carbon may be deposited on the commercial Cu/ZnO/Al2O3, forming the inactive carbide coating with Cu or/and Zn, which may be the cause of basicity’s severe deactivation during reactions. The selectivity to methanol decreased with increasing T, whereas more Cu0.7Zn2 inhibited the CO formation through reverse water–gas shift (RWGS) CO2 reduction.
Keywords: CH3OH synthesis, Cu/ZnO-based catalyst, XPS, XANES, EXAFS analyses, Catalyst selectivity and activity
Published in RUNG: 03.06.2021; Views: 2254; Downloads: 0
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44. Paragvajske pravljice2021, other monographs and other completed works Abstract: Pogovor o projektu, ki je prevedel do izida knjige Paragvajskih pravljic, kolektivnem načinu prevajanja in moči literature, da nas popelje v neznane svetove, tokrat v Paragvaj.
Prevod je pod mentorstvom Maje Šabec in Urše Geršak pripravilo 21 študentov druge stopnje hispanistike z ljubljanske Filozofske fakultete.
V pogovoru sodelujejo: Ines Metličar, Nina Kraševec, Iva Vogrič, Alex Centa, Urška Perhavec, Ana Zelenko, Zala Kerec, Anamarija Kočevar, Maja Šabec, Urša Geršak in Barbara Pregelj.
Moderiranje: Nace Fock.
Keywords: prevajanje, mladinska književnost, skupinsko prevajanje, paragvajska literatura
Published in RUNG: 12.05.2021; Views: 2219; Downloads: 10
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45. Knjiga kot podaljšek spomina in domišljije : pogovor o sodelovanju na kulturnem področju2021, other monographs and other completed works Abstract: V okviru dni LAC na pogovoru o sodelovanju na kulturnem področju predstavljamo založniški projekt sodelovanja, ki je pripeljal do izida antologije slovenskih mladinskih avtorjev v Paragvaju (Lo que susurraron las nubes) in paragvajskih v Sloveniji (Paragvajske pravljice). V kontekstu obeleževanja stote obletnice rojstva antropologinje Branislave Sušnik smo nekaj pozornosti namenili tudi projektom, povezanim z njo, pa tudi drugim kulturnim in projektom promocije slovenske literature, ki jih izvaja založba Malinc.
Sodelujejo:
moderatorka Irena Gril. Ministrstvo za zunanje zadeve, koordinatorica dni LAC,
Marija Uršula Geršak, Filozofska fakulteta UL,
dr. Maja Šabec, Filozofska fakulteta UL,
Javier Viveros, založba Rosalba (Paragvaj),
dr. Barbara Pregelj, založba Malinc (Slovenija),
Bogdan Batič, Predstavništvo EU v Paragvaju.
Keywords: slovenska književnost, paragvajska književnost, mladinska književnost, prevajanje, projekti, kulturno posredništvo
Published in RUNG: 12.05.2021; Views: 2266; Downloads: 17
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