Tuning the catalytic active sites of TiO$_2$/CeO$_2$ interactions to improve oxygen vacancy and lattice parameters for CO$_2$ conversion to green fuel additive

Kumar, Praveen (avtor), Kaur, Ramanpreet (avtor), Verma, Shilpi (avtor), Singh, Seema (avtor), Lavrenčič Štangar, Urška (avtor)

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 conversion of CO$_2$ to dimethyl carbonate (DMC). It was found that the catalytic activity of TiO$_2$/CeO$_2$ catalysts depends on the acidic and basic sites present in the catalyst. The study also investigated the optimization of reaction conditions in a batch reactor. It was found that the catalytic activity of TiO$_2$/CeO$_2$-based catalysts significantly enhances the CO$_2$ conversion and achieves a high DMC yield compared to the performance of pure CeO$_2$ and TiO$_2$. The reusability of the TiO$_2$/CeO$_2$ catalysts was examined as well. Additionally, the heat of the reaction and Gibbs free energy were calculated using chemical equilibrium models. The experimental response data was validated using artificial neural networks (ANN). The R$^2$ values between the expected and experimental results for DMC yield and CO$_2$ conversion were 0.9953 and 0.9969, respectively. The developed ANN model successfully predicts the percentage of CO$_2$ conversion and DMC yield under the given reaction conditions, with prediction accuracy MSE of 0.0013 and 0.0008, respectively.

• Jezik: Angleški jezik
• Ključne besede: carbon dioxide conversion, catalysts, dimethyl carbonate, ANN modelling, Gibbs energy, CO$_2$ conversion, TiO$_2$/CeO$_2$ catalysts
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 11 str.
• Številčenje: Vol. 433, art. 114652
• PID: 20.500.12556/RUL-155772
• UDK: 546.264-31:544.47
• ISSN pri članku: 0920-5861
• DOI: 10.1016/j.cattod.2024.114652
• COBISS.SI-ID: 191215875
• Datum objave v RUL: 17.04.2024

Gradivo je del revije

• Naslov: Catalysis today
• Skrajšan naslov: Catal. today
• Založnik: Elsevier
• ISSN: 0920-5861
• COBISS.SI-ID: 15324421

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: pretvorba ogljikovega dioksida, katalizatorji, dimetil karbonat, modeliranje z ANN, Gibbsova energija