Innovative approach to the catalytic effects of oxide glasses and glass-ceramics on the thermal decomposition of fatty acids

Marijan, Sara; Mošner, Petr; Koudelka, Ladislav; Skoko, Željko; Pavić, Luka; Pisk, Jana (2025) Innovative approach to the catalytic effects of oxide glasses and glass-ceramics on the thermal decomposition of fatty acids. Journal of Non-Crystalline Solids, 651 . ISSN 0022-3093

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Abstract

In the quest to mitigate greenhouse gas emissions, biofuels, particularly biodiesel, are compelling alternatives to fossil fuels due to their lower toxicity, renewability, biodegradability, lubricity, and cleaner combustion. This study explores cost-effective, innovative catalysts: glasses-(ceramics) derived from the Na2O-V2O5-(Al2O3)-P2O5-Nb2O5 system, for the pyrolytic deoxygenation of long-chain fatty acids into alkanes. Thermogravimetric analysis/differential scanning calorimetry (TG/DSC) assessed catalytic activity, while TG-IR and STA-QMS provided insights into the catalytic mechanisms. Dielectric properties examined through solid-state impedance spectroscopy (SS-IS) revealed that increased V2O5 content enhances dielectric permittivity, dielectric strength, and dielectric loss, correlating with improved catalytic activity. Optimal properties were achieved with the highest V2O5 content, indicating potential applications in memory and switching devices and battery technology. This study highlights the versatility and multifunctionality of oxide glasses-(ceramics), enhanced through simple compositional adjustments.

Item Type:	Article
Uncontrolled Keywords:	phosphate glasses and glass-ceramics; catalytic properties; dielectric properties; coupled TG-IR system and STA-QMS system; impedance spectroscopy (IS)
Subjects:	NATURAL SCIENCES > Physics NATURAL SCIENCES > Chemistry
Divisions:	Division of Materials Chemistry
Projects:	Project title Project leader Project code Project type Detaljan uvid u mehanizme polaronske i ionske vodljivosti u oksidnoj staklo-(keramici)-POLAR-ION-GLASS Ana Šantić IP-2018-01-5425 HRZZ Centar izvrsnosti u kemiji - CIuK-CIuK Josip Požar; Mirta Rubčić; Ivana Biljan KK.01.1.1.02.0016 EK Centar za Napredna Istraživanja Kompleksnih Sustava-CeNIKS Mihael Srđan Grbić; Emil Tafra KK.01.1.1.02.0013 EK
Depositing User:	Lorena Palameta
Date Deposited:	05 Feb 2025 14:28
URI:	http://fulir.irb.hr/id/eprint/9547
DOI:	10.1016/j.jnoncrysol.2025.123386

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