ABSTRACT Absolute vapor pressures of 4-hydroxy-3-methoxybenzaldehyde (vanillin), 2-hydroxy-3-methoxybenzaldehyde (ortho-vanillin), 2-hydroxy-5-methoxybenzaldehyde, and 3,5-dimethoxy-benzaldehyde were measured by using transpiration method. Standard molar enthalpies of sublimation and vaporization were derived from vapor pressures temperature dependences. Available primary experimental results on vapour pressures were collected from the literature and evaluated. The consistent set of thermodynamic data can be recommended to optimize the lignin valorization technologies.

中文翻译：

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甲氧基取代苯甲醛的蒸气压

摘要 4-羟基-3-甲氧基苯甲醛（香兰素）、2-羟基-3-甲氧基苯甲醛（邻香兰素）、2-羟基-5-甲氧基苯甲醛和 3,5-二甲氧基苯甲醛的绝对蒸气压是通过蒸腾作用测定的方法。升华和蒸发的标准摩尔焓源自蒸气压温度依赖性。现有的蒸汽压初步实验结果是从文献中收集和评估的。可以推荐一组一致的热力学数据来优化木质素增值技术。