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Russian Chemical Bulletin - Adsorption isotherms of methane for two samples of the metal-organic framework HKUST-1 with copper ions were measured on a precise vacuum high-pressure... 相似文献
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A. A. Pribylov K. O. Murdmaa O. V. Solovtsova M. K. Knyazeva 《Russian Chemical Bulletin》2018,67(10):1807-1813
Adsorption of methane on three samples of metal-organic framework structures (MOF), which contain copper, aluminum or zinc atoms, was measured at temperatures ranging from 303 to 333 K and pressures up to 40 MPa using a precise volumetric-gravimetric unit. The determined values of adsorption volumes and characteristic energies served to evaluate the average heats of adsorption, which were compared to the average isosteric heats of adsorption. 相似文献
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Using a high-precision volumetric—gravimetric experimental unit, the adsorption iso-therms of methane, argon, and nitrogen were measured at pressures of 0.1—40 MPa and at temperatures of 303—373 K on four carbon adsorbents with different porosities. To calculate the characteristic energy and average heat of adsorption of gases in the supercritical region, two parameters, which characterize an adsorptive were introduced: critical temperature T c of the gas and the analog of the saturated vapor pressure “P s”, which is defined assuming that densities of an adsorbate and an adsorptive are equal. The average heats of gas adsorption well agree with the average isosteric heats for the adsorption systems over the entire pressure and temperature intervals under study. 相似文献