由油酸和精油成分组成的优混合物的热物理特性
Elena Pérez-Pueyo1, Héctor Artigas2, Mohammadreza Haftbaradaran Esfahani1
1Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain.
Food research international (Ottawa, Ont.)
|November 21, 2025
概括
研究人员研究了安全的生物基溶剂混合物的热物理特性. 这些含有天然化合物的油酸系统显示出绿色化学应用的潜力,其准确的属性预测得到了验证.
科学领域:
- 绿色化学 绿色化学
- 化学工程是化学工程的重要组成部分.
- 物理化学 物理化学
背景情况:
- 化学工业在用更安全的替代品取代传统溶剂方面面临着挑战.
- 了解各种条件下的流体行为对于开发新的可持续溶剂至关重要.
- 热物理性质对于设计和优化化学过程至关重要.
研究的目的:
- 研究一般公认安全 (GRAS) 化合物的二元混合物的热物理性质.
- 评估这些混合物作为潜在的提取剂和溶剂,用于水溶性较差的物质.
- 为了验证诸如扰乱链统计协会流体理论 (PC-SAFT) 等预测模型的状态方程.
主要方法:
- 实验测定相位平衡,密度,声速,折射率,等离子摩尔热容量,表面张力和动力粘度.
- 在0.1MPa的温度下进行的测量,温度范围为283.15K至338.15K.
- 推导性质的计算和PC-SAFT状态方程的验证.
主要成果:
- 所有研究的基于油酸的混合物 (含提摩尔,l-menthol,eugenol或linalol) 的密度低于水,粘度适度.
- 含有欧原醇的混合物表现出最高的紧度,而含有林纳醇的混合物是最不紧的.
- PC-SAFT EoS 预测密度的平均相对偏差为 0.19%,同位素摩尔热容量偏差小于 5%.
结论:
- 研究的GRAS化合物混合物具有有利的热物理特性,可用于绿色化学的潜在应用.
- PC-SAFT状态方程为这些混合物提供了准确的预测,促进了工艺设计.
- 这些发现支持从自然产品中提取的可持续溶剂系统的开发.
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