Carbon mineralization into calcium carbonate (CaCO₃) has been widely studied as a promising CO₂ resource utilization pathway. In this work, CO₂ was fixed to alkylcarbonate through phase change absorption in polyethylene glycol 200 (PEG) plus ethanediamine (EDA) system at ambient conditions. This alkylcarbonate was identified by FTIR and ¹³C cross-polarization magic-angle spinning (CP-MAS) NMR spectra. It was used as both CO₃²⁻ source and crystal modifier to induce crystallization of CaCO₃ particles. The CaCO₃ microsphere with uniform morphology and vaterite crystal phase was acquired by adjusting quality of alkylcarbonate, concentration of Ca²⁺ concentration, and crystallization period without any additives. Furthermore, a plausible self-assembly formation mechanism toward inducing crystallization of vaterite CaCO₃ microsphere also was proposed. This synthesis strategy is environmentally friendly and offers an alternative strategy for indirect utilization of CO₂.

作为有前途的CO ₂资源利用途径，碳矿化成碳酸钙（CaCO ₃）已被广泛研究。在这项工作中，通过在环境条件下在聚乙二醇200（PEG）和乙二胺（EDA）系统中进行相变吸收，将CO ₂固定在碳酸烷基酯上。通过FTIR和¹³ C交叉极化魔角旋转（CP-MAS）NMR光谱鉴定出该碳酸烷基酯。它既用作CO ₃ ^2-的来源，又用作结晶改性剂，以诱导CaCO ₃颗粒的结晶。通过调节碳酸烷基酯的质量，Ca的浓度，获得了形貌一致，球v石晶相均匀的CaCO ₃微球。²⁺浓度，无任何添加剂的结晶期。此外，还提出了诱导球v石CaCO ₃微球结晶的合理的自组装形成机理。该合成策略对环境友好，为间接利用CO ₂提供了另一种策略。