Measuring and testing – Gas analysis – Density or specific gravity
Patent
1988-09-08
1989-08-15
Noland, Tom
Measuring and testing
Gas analysis
Density or specific gravity
G01N 900
Patent
active
048563200
ABSTRACT:
A method and apparatus for measuring physical adsorption of a gas by a solid adsorbent are disclosed. Use is made of a capacitance cell in controlled gas flow communication with a sample cell initially under vacuum and containing the solid adsorbent. The capacitance cell is filled with an adsorptive gas at a predetermined pressure and the dielectric constant of the gas at the predetermined pressure is measured to determine a first density value. The gas from the capacitance cell is then allowed to expand into the sample cell for adsorption by the solid adsorbent, whereby an adsorption takes place pressure falls until eqilibrium is established. The dielectric constant of the gas at equilibrium pressure is measured to determine a second density value, and the amount of gas adsorbed by the solid adsorbent is determined from the first and second density values.
Bose Tapan K.
Chahine Richard
Marchildon Louis
St-Arnaud Jean-Marie
Brown Charles A.
Brown Charles E.
Noland Tom
Roskos Josesph W.
Universite du Quebec a Trois-Rivieres, Societe Quebecoise d'Init
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