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Vapor Pressures of High Boiling Compounds such as Biogenic Substances

高沸点化合物（例如生物物质）的蒸气压

基本信息

批准号：
60550670
负责人：
ARAI Yasuhiko
金额：
$ 0.96万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550670/
关键词：
Vapor pressure Flow type apparatus Coal liquefaction product Biogenic substance グループ寄与法

项目摘要

The vapor pressures of high boiling compounds such as coal liquefaction products and natural products are essentially important to design separation or purification equipments. Nevertheless, they are scarce and therefore it is required in the related industries to collect their vapor pressure data systematically and to predict them based on a successful method.In the present study, a flow type apparatus has been developed to obtain accurate vapor pressure data of high boiling compounds and it is ascertained, by measuring the vapor pressures of naphthalene, that our apparatus has enough accuracy. Using the present apparatus, the vapor pressures of tetralin and l-naphthol have been carefully measured. The vapor pressure data of l-naphthol were newly determined by the our study in the low temperature region near its melting point. Now, it is continued to measure vapor pressures of high boiling compounds interested in the fine chemistry.It is strongly desired to predict vapor pressures of high boiling compounds by using some successful method. For the engineering purpose, a group contribution method based on the knowledge of molecular structures alone seems to be very useful. Up to data, a few methods have been proposed to predict vapor pressures of high boiling compounds such as coal liquefaction products. However, it is found that they cannot provide good results for complex molecules. Thefore, a new approach is now considered in this study.

煤液化产物和天然产物等高沸点化合物的蒸汽压对分离或提纯设备的设计至关重要。然而，高沸点化合物的蒸气压数据很少，因此相关行业需要系统地收集它们的蒸气压数据，并根据成功的方法进行预测。在本研究中，我们开发了一种流动型装置来获得准确的高沸点化合物的蒸气压数据，并通过测量萘的蒸气压来确定我们的装置具有足够的精度。用该装置对四氢呋喃和L-萘酚的蒸气压进行了细致的测定。我们的研究在L-萘酚熔点附近的低温区重新测定了其蒸气压数据。目前，对高沸点化合物蒸汽压的测量一直是精细化学研究的热点，人们迫切希望用一些成功的方法来预测高沸点化合物的蒸汽压。就工程目的而言，仅基于分子结构知识的基团贡献方法似乎非常有用。到目前为止，已经提出了几种方法来预测煤液化产物等高沸点化合物的蒸汽压。然而，人们发现它们不能为复杂的分子提供良好的结果。因此，本研究考虑了一种新的研究方法。