G - Physics – 01 – N
Patent
G - Physics
01
N
324/42
G01N 9/00 (2006.01)
Patent
CA 1287663
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 pres- sure and the dielectric constant of the gas at the prede- termined pressure is measured to determine a first densi- ty value. The gas from the capacitance cell is then allowed to expand into the sample cell for adsorption by the solid adsorbent, whereby as adsorption takes place pressure falls until equilibrium 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 deter- mined from the first and second density values. The method and apparatus according to the invention enable precise measurement of gas adsorption at high pressures. The method is simple, self-sufficient, easy to use and permits accurate measurement of the density of nonideal gases.
576075
Bose Tapan K.
Chahine Richard
Marchildon Louis
St-Arnaud Jean-Marie
Gaz Metropolitain Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Societe Quebecoise D'initiatives Petrolieres
Universite Du Quebec A. Trois-Rivieres
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