Adsorption phenomena at high pressures and temperatures 1. Method of investigation; adsorption of nitrogen on NaA zeolite

Adsorption of gases on adsorbents of various nature and porous structure at high pressures

“…The isotherms of excess adsorption of gases in a wide pressure range, unlike the isotherms of vapor adsorption, pass through the maximum and then reach zero values with the pressure increase, whereas the shape of the iso therms of adsorption of complete content is similar to that of the isotherms of vapor adsorption. 1 It is known that the isotherms of vapor adsorption and the isotherms of ad sorption of complete content of gases on the porous ad sorbents are rather well described by both Eq. (2) and Eq.…”

Adsorption of carbon dioxide on microporous carbon adsorbents

“…They indicate that the adsorption isosters of gases and vapors on the microporous adsorbents are well approxi mated by straight lines, which is a characteristic property of other adsorption systems as well. [15][16][17] Linear approximation of adsorption isosters is practi cally significant and makes it possible to calculate adsorp tion isotherms in the region of parameters beyond experi mental studies.…”

Determination of the adsorption volume and surface of carbon adsorbents with developed mesoporosity

“…In the case when it is necessary, to determine only the surface area of mesopores, which amounts to a part of the adsorbent surface only, we can use, for example, the .f" method 15 based on the correlation r = rmi + "/'S, (7) where r is the excess adsorption of the standard vapor (benzene) on the carbon sample, rmi is the excess vapor adsorption in carbon micropores, and -/" is the excess vapor adsorption calculated per surface area of mesopores S. It was found from analysis of numerous experimental data on benzene adsorption on the carbon adsorbents that the almost complete filling of micropores at 293 K is ceased at P/Ps = 0.40--0.45. Therefore, to determine the mesopore surface by Eq.…”