Utilization of spent coffee ground and mussel shell as heterogeneous catalyst for sustainable glycerol carbonate synthesis
Makaleler > Tam Makale · 2025
Yazarlar: Hasan Örtün, Murat Sert, Emine SERT
Biomass and Bioenergy, SCI İndekslerine Giren Dergi, Uluslararası, Wos, 2025, cilt 194, ss 107624-107624
DOI: 10.1016/j.biombioe.2025.107624
Özet
In the present work, biochar from spent coffee grounds (SCG) was used as a heterogeneous catalyst toward glycerol carbonate production. The catalytic activity of biochar catalysts was examined based on the pyrolysis temperatures of 400 °C, 500 °C and 600 °C. Biochar obtained at 600 °C (C600) gave the highest catalytic activity. CaO was incorporated into biochar through the calcination of waste mussel shell (MS), the obtained catalyst (C600MS) was synthesized having higher basic sites and catalytic activity when compared to C600. The synthesized catalysts were analyzed using various techniques to examine the composition, structure, and texture of the catalysts. The parametric study was carried out according to Box Behnken experimental plan to see the effects of temperature, dimethyl carbonate to glycerol molar ratio, and catalyst amount. The optimal conditions were found as dimethyl carbonate to glycerol molar ratio 4, temperature of 75 °C, and catalyst loading of 4 wt%. At optimal conditions, C600MS gave 58.5 % conversion and 84.9 % selectivity of glycerol carbonate. This research offers a potential solution for converting waste, specifically SCG and MS, into catalytically active catalyst. It also presents a cost-effective and sustainable catalyst for producing glycerol carbonate.