Compositions – Humidostatic – water removive – bindive – or emissive
Patent
1988-03-17
1990-08-21
Maples, John S.
Compositions
Humidostatic, water removive, bindive, or emissive
252190, 423219, 423230, C10K 100, B01D 5304
Patent
active
049504193
ABSTRACT:
A scavenger for purifying inert gas mixtures to remove Lewis acid and oxidant impurities therefrom, comprising (i) an inert inorganic support, and (ii) an active scavenging species on the support, formed by deposition thereon of an organometallic precursor and pyrolysis thereof at a selected elevated temperature. The organometallic precursor is an alkyl metal compound comprising a metal of Group IA, IIA, and/or IIIA, wherein the pyrolysis temperature may range from about 150.degree. C. to about 250.degree. C., depending on the specific alkyl metal compound employed as the precursor. Also disclosed are: a corresponding method of making the scavenger; a process for purifying inert gases by contacting same with the scavenger; and a vessel containing a bed of the scavenger, useful as an apparatus for purifying inert gases.
REFERENCES:
patent: 3485585 (1969-12-01), Snyder
patent: 3666416 (1972-05-01), Henle et al.
patent: 4450099 (1984-05-01), Lewis et al.
patent: 4603148 (1986-07-01), Tom
patent: 4604270 (1986-08-01), Tom
patent: 4659552 (1987-04-01), Tom
patent: 4761395 (1988-08-01), Tom et al.
patent: 7029632 (1987-03-01), Tom et al.
Tom, G. M., "Removal of Trace Impurities From Critical Process Gases," Millipore Fourth Annual Microelectronics technical Symposium.
Gordon, A. J., "The Chemist's Campanion", John Wiley & Sons, pp. 62-63 (1972).
Hercules Incorporated, "Metal Hydride Scavengers for the Removal of Impurities From Aprotic Fluids," Research Disclosure No. 276105 Apr. 1987.
Rhodes, H. L., "An Apparatus and Procedure for Calibrating A Water Vapor Analyzer in The 0.1 to 15 PPM Range," Report of Investigations No. 8548, U.S. Dept. of the Interior (1981).
Smyrl, N. R. et al, "Monitoring The Heterogenous Reaction of LiH and LiOH With H.sub.2 O and CO.sub.2 By Diffused Reflectance Infrared Fourier Transform Spectroscopy," Applied Spectroscopy, vol. 37, pp. 38-44 (1983).
Ashby, E. C., et al, "Magnesium Dihydride," Inorganic Synthesis, pp. 2-5.
Hurd, D. T., "Chemistry of the Hydrides," John Wiley & Sons, New York, pp. 51-52 (1952).
Brown Duncan W.
Tom Glenn M.
Advanced Technology & Materials Inc.
Fee Valerie D.
Hultquist Steven J.
Maples John S.
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