Measuring and testing – Gas analysis – Gas chromatography
Patent
1977-12-28
1979-04-17
Kreitman, Stephen A.
Measuring and testing
Gas analysis
Gas chromatography
G01N 3108
Patent
active
041494024
ABSTRACT:
A method is provided for generating data for use in calculating a desorption isotherm for an adsorbent material as well as a pore size distribution characteristic of the adsorbent material by flowing an adsorbate gas over a sample in a cell until the surface of the sample is saturated with the adsorbate, shutting off the flow of the adsorbate gas and then flowing a carrier gas through the cell to remove the adsorbate material from the surface of the sample while continuously detecting and recording per unit of time the composition of the gas mixture flowing from the cell and the sample temperature until only the carrier gas is detected.
REFERENCES:
patent: 2985007 (1961-05-01), Boeke
patent: 3211006 (1965-10-01), Haley
Blumer: "Thermometric Monitor for Chromatographic Streams," Analytical Chemistry, vol. 32, No. 7, pp. 772-776, 6/1960.
Burke et al., "Computer Acquisition of Frontal Analysis Chrom. Data for Surface Area Determination," Anal. Chem., vol. 43, No. 4, Apr. 1971, pp. 573-578.
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