Measurement of Adsorption Equilibria of Pure and Mixed Corrosive Gases: The Magnetic Suspension Balance

Abstract

Adsorption equilibria of CH₄, H₂S and gas mixtures H₂S / CH₄ with initial concentrations y(H₂S) = 10%(mole), before adsorption, on activated carbon (AC) Norit R1 have been measured in the pressure range 0 ≤ p ≤ 1,5 MPa at temperature T = 298 K. Both the volumetric and the gravimetric method have been used. They can be combined to the so-called volume-gravimetric method [1], allowing to measure binary coadsorption equilibria without concentration measurements in neither the adsorbate nor the adsorptive. Gravimetric measurements have been performed using a microbalance outside the aggressive gas atmosphere and a magnetic coupling device build by Rubotherm, Bochum Germany [2, 3]. The method of measurement is outlined and data are reported and discussed to certain extend.