超临界CO2中苯甲酸与乙醇和二甲基亚砜的相互作用

doi:10.3866/PKU.WHXB19961106

Abstract

Abstract:

Infrared spectra of benzoic acid in CO2-ethanol and CO2-dimethyl sulfoxide(DMSO) mixed supercritical fluids have been determined at 35.0℃ and 12.6MPa. It was observed that benzoic acid exists in both forms of monomer and dimer in pure supercritical CO2. Benzoic acid begin to form hydrogen-bonded complexes with ethanol and DMSO even their concentrations are very low and the concentration of the monomer of benzoic acid decreases with increasing of ethanol concentration, provided that the total concentration of the acid is fixed.

Key words: FTIR, Benzoic Acid, Ethanol, Dimethyl Sulfoxide, CO₂, Supercritical fluid

Ke Jie,Jin Shun-Zi,Han Bu-Xing,Yan Hai-Ke,Shen De-Yan. FTIR Study on the Interactions between Benzoic Acid and Ethanol,Benzoic Acid and Dimethyl Sulfoxide in Supercritical CO₂[J]. Acta Phys. -Chim. Sin. 1996, 12(11), 986-989. doi: 10.3866/PKU.WHXB19961106

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FTIR Study on the Interactions between Benzoic Acid and Ethanol,Benzoic Acid and Dimethyl Sulfoxide in Supercritical CO₂

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FTIR Study on the Interactions between Benzoic Acid and Ethanol,Benzoic Acid and Dimethyl Sulfoxide in Supercritical CO2

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FTIR Study on the Interactions between Benzoic Acid and Ethanol,Benzoic Acid and Dimethyl Sulfoxide in Supercritical CO₂