Sustainable CO 2 Fixation into Cyclic Carbonates via NiO–CuO–ZnO Heterogenous Catalyst at Ambient Temperature

Abstract The utilization of CO 2 as a precursor for products with added value, like cyclic carbonates, has attracted a lot of interest in the context of sustainable development. Cyclic carbonates are used as electrolytes in lithium‐ion batteries, as polar aprotic solvents in organic synthesis, and as precursors for different intermediates and polymer synthesis. Traditional catalytic conversion of CO 2 to cyclic carbonates (yield 60%–80%) often requires high pressure (>10 bar), high temperatures (80–150 °C), and expensive precious metal catalysts (e.g., Ru and Pd), leading to unwanted oligomer side products. In this study, we report a cost‐effective, trimetallic oxide catalyst, NiO–CuO–ZnO (NCZ‐6), for synthesizing chloropropene carbonate at room temperature. An easy and energy‐efficient grinding process was used to synthesize the NCZ‐6 catalyst, which was then characterized using XPS, FTIR, XRD, TGA, FE–SEM, and HR‐TEM methods. While NH 3 ‐TPD and CO 2 ‐TPD assessed its acidity and basicity, BET was used to analyze its surface area and pore size distribution. With an 80% isolated yield value, the NCZ‐6 catalyst could convert epichlorohydrin and CO 2 into chloropropene carbonate without using solvents in ambient conditions. This strategy supports a circular carbon economy and is in line with the principles of green chemistry by providing a sustainable and effective substitute. Furthermore, scalability and ecological friendliness are improved by the room temperature process.