The mixtures of propylene carbonate (PC) (1) + poly(propylene glycol) monobutyl ether with a molecular weight of 340 (PPGME340) (2) were studied as physical absorbents for CO₂ absorption with different mass fractions (w₁ = 0.0000, 0.2501, 0.5002, 0.7495, and 1.0000). The physical properties including densities and kinematic viscosities of these absorbents were determined and regressed by linear equation and Vogel–Fulcher–Tammann equation. CO₂ absorption capacities of the absorbents under pressures up to 1300 kPa and at temperatures from 298.15 to 303.15 K were determined by the isothermal synthesis device and fitted by the extended Antoine equation. Adding PC into PPGME340 will result in a slight increase of density, dramatic decrease of kinematic viscosity, and moderate decrease of CO₂ absorption capacity based on per mole absorbent. Compared with common solvents in industrial plants, PPGME340-contained absorbents show relatively high absorption capacity and kinematic viscosity. In addition, absorbent PC + PPGME340 with a mass fraction of w₁ = 0.2501 shows relatively high CO₂ absorption capacity and moderate kinematic viscosity, suggesting its better potential for the industrial application than pure PPGME340.

中文翻译：

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碳酸丙烯酯+聚丙二醇单丁醚体系的物理性质和CO ₂吸收能力

碳酸亚丙酯（PC）（1）的混合物+聚（丙二醇）单丁基用分子量340（PPGME340）（2）进行了研究，作为CO物理吸收剂醚₂吸收具有不同质量分数（瓦特₁ = 0.0000， 0.2501、0.5002、0.7495和1.0000）。通过线性方程和Vogel–Fulcher–Tammann方程确定并回归了这些吸收剂的物理性质，包括密度和运动粘度。一氧化碳₂通过等温合成装置测定吸收剂在高达1300 kPa压力和298.15至303.15 K的温度下的吸收容量，并通过扩展的Antoine方程拟合。基于每摩尔吸收剂，将PC添加到PPGME340中会导致密度略有增加，运动粘度显着降低以及CO ₂吸收能力的适度降低。与工业工厂中的常用溶剂相比，PPGME340吸收剂具有相对较高的吸收能力和运动粘度。此外，吸水剂PC + PPGME340的质量分数w ₁ = 0.2501显示出相对较高的CO ₂ 吸收能力强，运动粘度适中，表明其在工业应用方面比纯PPGME340具有更好的潜力。