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To enhance SO 2 utilization, improve fertilizer use efficiency, and minimize the negative environmental impact, the novel slow release sulfurcontaining urea fertilizers with good biodegradation performance were developed by coating with the sustainable poly(eugenol sulfone) derived from renewable eugenol and SO 2 . The poly(eugenol sulfone) was synthesized by a simple free radical polymerization under mild conditions, and structural features of the synthesized copolymers were studied by various characterization techniques. Characterization results revealed that the copolymers exhibited the strict alternating copolymerization structures containing OSO. A set of systematically designed experiments were carried out to determine the influences of the amount of initiator, reaction time, and reaction temperature on the molecular structure, release, and biodegradation behavior of the coated fertilizers. The obtained results proved that the coated fertilizers showed excellent release and biodegradation features. Moreover, the release and biodegradation rate of the coated fertilizers can be adjusted by changing the molecular weight of poly(eugenol sulfone). In addition, the kinetic study on the slow release characteristics of poly(eugenol sulfone)-coated fertilizers showed that the best fitting effect was obtained by the Ritger−Peppas equation. This work offers a simple and useful strategy for designing sulfur-containing urea fertilizers with excellent slow release and biodegradation performance and provides a new route for sulfur recycling. In the future, the fertilizer will be deeply tested to evaluate their impact on plant growth, chemical, and biological soil properties.

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Various zinc compounds were used as the catalysts for the synthesis of dimethyl carbonate (DMC) from methyl carbamate (MC) and methanol in a batch reactor. Among them, ZnCl2 showed the highest catalytic activity and led to the DMC yield of 33.6% under the optimal conditions. In addition, a possible reaction mechanism was proposed based on Fourier transform infrared (FTIR) and X-ray diffraction (XRD) characterization results.

Conventional amine scrubbing systems for carbon dioxide capture require a large amount of energy to regenerate the absorbent. Theoretically, if CO2‐captured product can be separated from the liquid counterpart, and only this product need to be heated for desorption, the energy efficiency for CO2 capture can be improved greatly. In the present work, diethylenetriamine (DETA) dissolved in ethanol, diethylene glycol dimethyl ether, N‐methyl‐pyrrolidone, or dimethyl carbonate can absorb CO2 to result in liquid–solid phase‐change in addition to making the reaction to achieve its stoichiometric maximum. The results show that the different organic solvents have no influence on the formation of precipitate. Single‐crystal structure analysis indicates a DETA–carbamate is formed with equimolar CO2 absorption. The absorption–desorption cycles using microwave heating shows that the system has a relatively stable cycling performance.

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