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Citation: 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 Physico-Chimica Sinica, ;1996, 12(11): 986-989. doi: 10.3866/PKU.WHXB19961106 shu

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

1.
Institute of Chemistry,Academia Sinica,Beijing 100080

Received Date: 19 April 1996
Available Online: 15 November 1996

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.
- FTIR,
- Benzoic Acid,
- Ethanol,
- Dimethyl Sulfoxide,
- CO₂,
- Supercritical fluid
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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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通讯作者: 陈斌, bchen63@163.com

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