Byeon, Jae-Yong Yoon, Sang-Hyeok Lee, Ru-Ri Kim, Beom-Seo Nah, In Wook Jung, Hyun Wook Shim, Jae-Oh 2025-11-21T02:04:59Z 2025-11-21T02:04:59Z 2025-11-11 2026-01 0256-1115 https://pubs.kist.re.kr/handle/201004/153587 Dimethyl carbonate (DMC) is a green chemical with wide industrial applications. It is necessary to develop a method to produce DMC safely, eco-friendly, and economically. In this work, DMC was synthesized via transesterification of ethylene carbonate (EC) and methanol (MeOH) using a heterogeneous base catalyst combining sodium aluminate and cyanoguanidine (SC catalyst). Among the series, the optimized sodium aluminate–cyanoguanidine catalyst (denoted as SC-2, NaAlO2/cyanoguanidine weight ratio = 3:4) exhibited the highest activity, achieving a 73% DMC yield, which outperformed sodium aluminate (25%) and sodium carbonate (46%). This enhanced performance is attributed to synergistic effects that arise from structural and basicity enhancements. Under optimized conditions (40 ℃, 2 h, 0.5 wt% catalyst, EC: MeOH = 1:8), SC-2 achieved an 85% yield and demonstrated excellent reusability, with less than 20% yield loss over five cycles. English 한국화학공학회 Optimization of a Recyclable Sodium-Based Heterogeneous Catalyst for Efficient DMC Synthesis Under Mild Conditions Article 10.1007/s11814-025-00592-0 1 Korean Journal of Chemical Engineering, v.43, no.2, pp.321 - 335 Korean Journal of Chemical Engineering 43 2 321 335 N scie scopus kci ART003295025 001608030600001 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article ETHYLENE CARBONATE PROPYLENE CARBONATE GLYCEROL CARBONATE TRANSESTERIFICATION METHANOL ALUMINATE DIMETHYL CARBONATE CARBOXYMETHYLATION DIOXIDE NAALO2 Base catalyst Heterogeneous catalyst Transesterification Dimethyl carbonate