System for dosing and determining saturation pressure in a volum

Measuring and testing – Particle size

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01N 1508

Patent

active

049727303

ABSTRACT:
The invention provides improvements in a system for carrying out volumetric sorption analysis of porous materials. According to one aspect of the invention, the saturation pressure of the adsorbate gas is measured after dosing of the sample during an actual run has brought the adsorbate gas to a saturation condition above the sample, and this measured saturation pressure is then used by the system to determine the relative pressures at which data will be taken during desorption. In accordance with another aspect of the invention, the system automatically adds extra adsorbate gas to the dosing manifold until the analysis proceeds beyond a selected relative pressure, so that far fewer doses are required to reach initial target relative pressures in the case of materials which adsorb large amounts of gas at low relative pressures.

REFERENCES:
patent: 2729969 (1956-01-01), Innes
patent: 2788657 (1957-04-01), Innes
patent: 2960870 (1960-11-01), Nelsen et al.
patent: 3211006 (1965-10-01), Haley
patent: 3211007 (1965-10-01), Atkins
patent: 3262319 (1966-07-01), Orr, Jr. et al.
patent: 3464273 (1969-09-01), Hendrix et al.
patent: 3555912 (1971-01-01), Lowell
patent: 3707870 (1973-01-01), Herve et al.
patent: 3771367 (1973-11-01), Lowell et al.
patent: 3783697 (1974-01-01), Lowell et al.
patent: 3850040 (1974-11-01), Orr, Jr. et al.
patent: 3884083 (1975-05-01), Lowell
patent: 4566326 (1986-01-01), Lowell
patent: 4762010 (1988-09-01), Borghard et al.
Daeschner, H. W. et al., An Effective Dynamic Method for Surface Area Determinations, In Anal. Chem., vol. 34, No. 9, pp. 1150-1155, Aug. 1962.
A Dynamic Nitrogen Adsorption Method for Surface Area Measurements of Paper (by Stone and Nickerson).
Methods and Techniques for the Determination of Specific Surface by Gas Adsorption (by A. S. Joy).
Surface Properties of Porous Solids Low Temperature Nitrogen Adsorption Method (by Shell Method Series 666/49U).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System for dosing and determining saturation pressure in a volum does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for dosing and determining saturation pressure in a volum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for dosing and determining saturation pressure in a volum will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1025534

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.