Automatic volumetric sorption analyzer

Details Automatic volumetric sorption analyzer Automatic volumetric sorption analyzer

1984-07-09

1986-01-28

Levy, Stewart J.

Measuring and testing

Miscellaneous

73 38, G01N 1508

Patent

active

045663262

ABSTRACT:
An automatic adsorption and desorption analyzer for independently performing analyses on a plurality of powder samples includes a manifold connected through a plurality of independently operated valves to a corresponding plurality of sample cells. A pressure transducer measures the manifold pressure and a plurality of pressure transducers are respectively coupled to the sample cells to independently measure the pressure at each of the sample cells. The system measures the volume of gas adsorbed (desorbed) by each of the samples that is required to establish specified equilibrium pressures at the sample cells, thereby to provide pressure-volume points which can be used to prepare adsorption (or desorption) isotherms, BET curves, and other information concerning the properties of the samples.

REFERENCES:
patent: 3464273 (1969-09-01), Hendrix
patent: 3500675 (1970-03-01), Sandstede et al.
patent: 3545281 (1970-12-01), Johnston
patent: 3850040 (1974-11-01), Orr, Jr. et al.
patent: 3915636 (1975-10-01), Ford, Jr. et al.
patent: 3943754 (1976-03-01), Orr, Jr.
patent: 4211116 (1980-07-01), Pilat et al.
patent: 4300386 (1981-11-01), Gupta
patent: 4305291 (1981-12-01), Nelson
patent: 4450723 (1984-05-01), Scott
patent: 4489593 (1984-12-01), Pieters et al.
"Determination of Surface Area by Gas Chromatography"; Analytical Chemistry; vol. 33, No. 7, pp. 966-967; Jun. 1961; Ralph Stock.
"An Efficient Dynamic Method for Surface Area Determinations"; Analytical Chemistry; vol. 34, No. 9, pp. 1150-1155; Aug. 1962; H. W. Daeschner et al.
"A New Approach to Surface Area Determinations by Selective Gas Adsorption in a Nitrogen-Helium System"; (Paper #110 delivered at the Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Mar. 1-5, 1965); 16 pages; Jerome Kremen et al.
"Automatic Control of Pore Size Distribution Measurement in Solids"; J. Sci. Instrum.; vol. 44; pp. 922-925; Nov. 1967; D. G. Stevenson et al.

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