【摘要】 在高压可视釜中用等温合成法研究了298.1和303.1K时二氧化碳（CO₂）中7种糖类衍生物的相行为。样品质量分数区间为0⁰.09。以恒温时样品在CO₂中开始溶化的压力值作为判断亲CO₂性高低的标准。葡萄糖衍生物中α-甲基-2,3,4,6-四-O-乙酰-D-吡喃葡萄糖苷和β-甲基-2,3,4,6-四-O-丙酰-D-吡喃葡萄糖苷的潮解点最低,为3.4³.6MPa。二糖衍生物中,蔗糖八乙酸酯很好地溶解于高压CO₂。除D-纤维二糖八乙酸酯外,其余6种样品都可以在较温和的压力（2.5⁶.5MPa）下溶化在CO₂中。α-甲基-2,3,4,6-四-O-乙酰-D-吡喃葡萄糖苷、β-甲基-2,3,4,6-四-O-丙酰-D-吡喃葡萄糖苷和蔗糖八乙酸酯有望发展为高效的CO₂相变物理吸附剂。更多还原

【Abstract】 The phase behaviors of seven sugar derivatives with a mass fraction of 0.0-0.09 in carbon dioxide were investigated by isothermal synthetic method at 298.1Kand 303.1Kin a high pressure view cell.The pressure under which samples deliquesced in isothermal cases suggested the CO₂-philic intensity.The results illustrated that among all the glucopyranose-based CO₂-philes,methyl 2,3,4,6-tetra-O-acetylα-D-glucopyranoside and methyl 2,3,4,6-tetra-O-propionylβ-Dglucopyranosideis deliquesced at the lowest pressure（3.4-3.6MPa）.Sucrose octaacetate and disaccharide derivative were highly soluble in high pressure carbon dioxide.Except D-cellobiose octaacetate,the rest six all solubilized in carbon dioxide under modest pressure（2.5-6.5MPa）.Methyl 2,3,4,6-tetra-O-acetylα-D-glucopyranoside,methyl 2,3,4,6-tetra-O-propionylβ-D-glucopyranoside and sucrose octaacetate were promising candidates for effective phase-change absorbents for CO₂.更多还原