Determination of some adsorption properties on the porous polymer porapak-Q

Gas separation and purification by polymeric adsorbents: flue gas desulfurization and sulfur dioxide recovery with styrenic polymers

“…From the literature results, it is seen that the equilibrium amounts of water adsorbed on styrenic polymers, at constant relative humidities, decrease significantly with increasing temperature. It can be found, for example, that the equilibrium capacity of Porapak-Q adsorbent, which is similar to XAD-16, for water at 60 °C and 70% relative humidity is about 3 mg/g (Gassiot-Matas and Monrabal-Bas, 1970). Similarly, the equilibrium capacity of Chromosorb-102 for water near 100 % relative humidity drops from 11 mg/g at 30 °C to about 6.5 mg/g at 100 °C (Gvosdovich et al, 1969).…”

“…The hydrophobicity of the sorbent is clearly indicated in Figure 7. Although the water vapor isotherms on XAD-16 were measured only at room temperature, there is sufficient information in the literature regarding the capacity of styrenic polymer sorbents for water at higher temperatures (Gvosdovich et al, 1969; Gassiot-Matas and Monrabal-Bas, 1970). From the literature results, it is seen that the equilibrium amounts of water adsorbed on styrenic polymers, at constant relative humidities, decrease significantly with increasing temperature.…”

Gas chromatography

“…Porapak T exhibited a strong interaction with alcohols, ethers, and ketones, and both materials showed a strong interaction with the hydroxyl hydrogen. The adsorption isotherms for Porapak Q were found to be of the Langmuir III type and the isosteric heats of adsorption decreased with increased sample size (341). Temperatures as low as 76°K were used to separate He3, Ne, and H2 in He4 on a 4.9-m Porapak Q column (989).…”

“…44, NO. 5, APRIL 1972 {259, 341,979). The water vapor sorption isotherm and the diffusion coefficient of water on textile fibers (polyamide-6-6, polyethyleneglycol terephthalate, and polypropylene) were evaluated by French workers {170,171)…”