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Št. zadetkov: 6
Catalytic hydrogenolysis over Cu-based oxide derived from hydrotalcite-like structured materials
Praveen Kumar, Ramanpreet Kaur, Shilpi Verma, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: hidrogenoliza glicerola;kataliza;katalitska aktivnost;glycerol hydrogenolysis;catalysis;catalytic activity;interface studies;surface acidity and metallic phase;ANN modelling;
In this study, the catalytic activity of Cu-derived oxide catalysts in glycerol hydrogenolysis was investigated and the effect on the selectivity of 1,2-propanediol (1,2-PDO) with the different Cu/Al molar ratios was observed. The glycerol conversion/1,2-PDO selectivity was found to be dependent on ...
Leto: 2023 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Tuning the catalytic active sites of TiO [sub] 2/CeO [sub] 2 interactions to improve oxygen vacancy and lattice parameters for CO [sub] 2 conversion to green fuel additive
Praveen Kumar, Ramanpreet Kaur, Shilpi Verma, Seema Singh, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: pretvorba ogljikovega dioksida;katalizatorji;dimetil karbonat;modeliranje z ANN;Gibbsova energija;carbon dioxide conversion;catalysts;dimethyl carbonate;ANN modelling;Gibbs energy;
In recent years, the conversion of carbon dioxide (CO$_2$) to value-added products has become an area of great interest, both from an industrial and environmental perspective. Here we have successfully synthesized TiO$_2$/CeO$_2$-based catalysts by exo- and endo-template and use for direct conversio ...
Leto: 2024 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Enhanced photo-degradation of N-methyl-2-pyrrolidone (NMP)
Praveen Kumar, Shilpi Verma, Ramanpreet Kaur, Josipa Papac, Hrvoje Kušić, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: N-metil-2-pirolidon;PMS;UV;kinetika;N-methyl-2-pyrrolidone;kinetics;artificial neural network modelling;radical quenching;
This study investigates the degradation of N-methyl-2-pyrrolidone (NMP) by UV-C and UV-C/PMS-treatment processes. The degradation of NMP was less than 2% by UV-C photolysis. To enhance the degradation, PMS was used as a source of sulphate (SO$_4$$^•$$^−$) and hydroxyl (HO$^•$) radicals in the UV-C p ...
Leto: 2022 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Increasing the photocatalytic efficiency of ZnWO [sub] 4 by synthesizing a Bi [sub] 2WO [sub] 6/ZnWO [sub] 4 composite photocatalyst
Praveen Kumar, Shilpi Verma, Nataša Čelan Korošin, Boštjan Žener, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: kompozitni fotokatalizatorji;polprevodniki;volfram;composite photocatalyst;semi-conductivity;tungstate;Plasmocorinth B;band gap;
In the present study, a Bi$_2$WO$_6$/ZnWO$_4$ photocatalyst was successfully constructed by a modified hydrothermal synthesis method with different molar concentrations of Bi$_2$WO$_6$ with respect to ZnWO$_4$. The variation in molar concentrations of Bi$_2$WO$_6$ changed the photocatalytic properti ...
Leto: 2022 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Comprehensive study of the kinetics of combustion and pyrolysis of petrochemical sludge
Shilpi Verma, Mamleshwar Kumar, Ramanpreet Kaur, Praveen Kumar, Mika Sillanpää, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: PTA odpadno blato;avtooksidacija;kinetika pirolize;toplotna kapaciteta;ANN modeliranje;PTA wastewater sludge;auto-gasidication/oxidation;pyrolysis kinetics;high caloric-value;ANN modeling;
Energy can be obtained from the pyrolysis and combustion of purified terephthalic acid (PTA) sludge which is produced during the treatment of PTA wastewater. In this study, the combustion and pyrolysis behaviors and kinetics of the sludge produced from the thermochemical treatment of PTA wastewater ...
Leto: 2023 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Synthesis of bio-based materials from agricultural residues for treatment of petrochemical wastewater
Mohammad Nasir, Praveen Kumar, Vimal Chandra Srivastava, Shilpi Verma, Ramanpreet Kaur, Indra Deo Mall, Urška Lavrenčič Štangar
Izvirni znanstveni članek
Oznake: 4-karboksibenzaldehid;centralna kompozitna zasnova;adsorpcija;materiali;odpadne vode;4-carboxybenzaldehyde;central composite design;bagasse fly ash;adsorption;
4-Carboxybenzaldehyde (4-CBA), a major component of purified terephthalic acid wastewater, is toxic to living organisms and required to be removed before the discharge of treated wastewater in a natural water body. In this work, the adsorptive removal of 4-CBA was studied using bagasse fly ash (BFA) ...
Leto: 2023 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Št. zadetkov: 6
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