2-O-Methylperlatolic and 2'-O-Methylperlatolic Acids: Two New Lichen Depsides from Pertusaria

Culberson, Chicita F.; Dibben, Martyn J.

doi:10.2307/3241478

Cited by 5 publications

(3 citation statements)

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“…The quantity of methane was determined from the pressure, volume, and temperature in the expanded state. The pressure after expansion was Vapor-liquid equilibrium apparatus: (1) equilibrium cell; (2) magnetic pump; (3) heater; (4) temperature-controlled bath; (5) measured by a mercury manometer to within ±0.1 mmHg. The moles of methane were determined from the virial equation of state truncated after the second virial coefficient and the pressure-volume-temperature data.…”

Section: Sample Analysismentioning

confidence: 99%

“…In any study of the intrinsic kinetics of gas-liquid reactions, data on the solubility of the gas-phase reactant in the liquid medium are essential. In recent years, the study on the gasliquid reactions involving CO using metal complex catalysts in solution has gained considerable importance (1)(2)(3)(4). Data on the solubility of CO particularly at higher temperatures and pressures are not available in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1.Vapor-liquid equilibrium apparatus:(1) equilibrium cell; (2) magnetic pump;(3) heater;(4) temperature-controlled bath;(5) solution feed tank; (6) stirrer; (7) thermometer; (8) strain gauge pressure transducer; (9) liquid sample train; (10) vapor sample train; (11) vacuum pump; (12) methane cylinder.…”

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confidence: 99%

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Vapor-liquid equilibria in the methane-diethylene glycol-water system at 298.15 and 323.15 K

Yokoyama

Wakana²,

Kaminishi³

et al. 1988

J. Chem. Eng. Data

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The water contents of compressed methane gas In equilibrium with water and diethylene glycol-water solutions of 0.156, 0.472, and 0.662 mole fraction water were measured at 298.15 and 323.15 K and pressures of 3, 5, and 8 MPa. The solubilities of methane In the diethylene glycol, water, and diethylene glycol-water solutions were also measured under the same conditions of the water content measurement. The methane solubility data were analyzed with the Krlchevsky-Kasarnovsky equation to obtain the Henry constant of methane In the diethylene glycol-water solutions.Gas dehydration plays an important part in gas purification processes. Diethylene glycol and triethylene glycol are effective gas dehydrating agents. A knowledge of the vapor-liquid equilibria in the gas-glycol-water system is helpful in designing an effective dehydration system. Takahashi et al. (1) have reported the vapor-liquid equilibrium data in the carbon dioxide-diethylene glycol-water and carbon dioxide-triethylene glycol-water systems. In this study, we measured the vapor-liquid equilibria in the methane-diethylene glycol-water system at 298.15 and 323.15 K and pressures of 3, 5, and 8 MPa.

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