A NEW APPARATUS FOR THE MEASUREMENT OF PHYSICAL ADSORPTION OF GAS-MIXTURES AT ELEVATED PRESSURES

The new apparatus described enables making simultaneously absolute measurements of physisorption, bulk density, and adsorption kinetics of multicomponent ps mixtures as a function of pressure up to 30 MPa. The method which combines the dynamic and the gravimetric methods is self-sufficient because it does not require complementary data. An in-line high-pressure chromatographic device directly measures the time evolution of the effluent flow composition (breakthrough curves). Results of adsorption, density, and adsorption kinetics at high pressures of the equimolar Ar-CH4 mixture on activated carbon are reported.