Dissolving Technique of polar compounds into supercritical COィイD22ィエD2

与ligands was investigated。实验条件为40℃，压力范围从10至18 MPa。配体使用的是冠ethers （18-冠-6，顺式二氯环己烷-18-冠-6和15-冠-5）和glymes （triglyme和tetraglyme）。Extraction of K1 + K1 or Na K1 + K1 + K1 with ligand in scCO K2 Gave negligibly low recoveries that did not vary with pr #。However，在添加剂、五氯氟-n-八烷酸（HPFOA）的存在中，其恢复明显可用于两种钠和钾离子提取物。This is because the HPFOA ionized and apparently supplied its anion which has CO D22-philic fluoro-alkyl chains。根据实验结果，开发了一个化学equilibrium模型来分析提取机制。对于冠以太系统，恢复显示的简单行为，以及提取的复合体（alkali金属离子：配体：反离子）被确认为单体（1：1：1）。对于glymes系统，恢复显示了各种行为，并倾向于在高分子集中进行降解。这似乎是为了在一个明确的阶段建立一个安全复合体。本研究的结果显示，alkali金属可以用scCO-D22-D2使用配体和恢复金属可以被大大增加，因为它可以提供一个CO-D22-philic counter Ion.重新评估微细胞形成，一个用于原位动态激光散射测量的装置。有了这个装置，我们发现了全氟-聚合物，因为它可以是一个很好的活性剂，可以逆转碳二氧化物在Warer的存在中，但是，如何在实验设置中发现微量元素无法获得缺陷，因为它在agitability的力量。

Supercritical carbon dioxide (scCOィイD22ィエD2) extraction of alkali metal ions from aqueous solutions (K+, Na+ : 1.7 x 10ィイD1-4ィエD1 mol dmィイD1-3ィエD1) with ligands was investigated. Conditions of the experiments were 40℃ with pressure ranging from 10 Mpa to 18 Mpa. Ligands used were crown ethers (18-crown-6, cis-dicyclohexyl-18-crown-6 and 15-crown-5) and glymes (triglyme and tetraglyme). Extraction of KィイD1+ィエD1 or NaィイD1+ィエD1 with ligand in scCOィイD22ィエD2 gave negligibly low recoveries that did not vary with pressure. However, in the presence of an additive, pentadecafluoro-n-octanoic acid (HPFOA), the recoveries increased clearly for both sodium and potassium ion extractions. This is because the HPFOA ionized and apparently supplied its anion which has COィイD22ィエD2-philic fluoro-alkyl chains. Based on the experimental results, a chemical equilibrium model was developed to analyze the extraction mechanism. For crown ether systems, the recoveries showed simple behavior, and the extracted complexes (alkali metal ion : ligand : counter ion) were confirmed to be monomeric (1:1:1). For glymes systems, the recoveries showed various behavior and tended to decrease at high ligand concentrations. This seemed to indicate consecutive complex formation in the aqueous phase. The results of this study show that alkali metals can be extracted with scCOィイD22ィエD2 using ligands and recovery of the metals can be greatly increased by adding a substance that can supply a COィイD22ィエD2-philic counter Ion.Rerading the reverse micell formation, an apparatus for in-situ dynamic laser scattering measurement was developed. With this apparatus, it was found that perfluoro-polyether can be a good surfactant for reverse micell in carbon dioxide in the presence of warer, however direct evidence of the micell could not be obtained because of lackness in agitation power of the experimental setup.