Process for purification of germane

Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C095S117000, C095S139000, C423S645000

Reexamination Certificate

active

07087102

ABSTRACT:
A process and system for the synthesis and/or purification of crude germane to provide a purified germane product are disclosed herein. In one aspect of the present invention, there is provided a process for making a purified germane product containing less than 1 volume percent of one or more germanium-containing impurities comprising: providing a crude germane fluid; passing at least a portion of the crude germane fluid through a first adsorbent which selectively adsorbs water and carbon dioxide contained therein and withdrawing therefrom a partially purified germane fluid; passing at least a portion of the partially purified germane fluid through a second adsorbent which selectively adsorbs the one or more germanium-containing impurities contained therein and withdrawing therefrom a hydrogen-enriched purified germane fluid; and separating the purified germane product hydrogen from the hydrogen-enriched purified germane fluid.

REFERENCES:
patent: 3577220 (1971-05-01), Kuratomi et al.
patent: 4565677 (1986-01-01), Yusa
patent: 4656013 (1987-04-01), Hiai et al.
patent: 4668502 (1987-05-01), Russotti
patent: 4824657 (1989-04-01), Jadhav
patent: 5158656 (1992-10-01), Ayers
patent: 6716271 (2004-04-01), Arno et al.
patent: 2005/0106090 (2005-05-01), Agarwal et al.
patent: 2005/0120877 (2005-06-01), Wu et al.
patent: 890356 (1982-01-01), None
patent: 60221301 (1985-11-01), None
patent: 60221322 (1985-11-01), None
patent: 62017004 (1987-01-01), None
patent: 10291804 (1998-11-01), None
patent: 1 732 697 (1995-10-01), None
T. S. Piper, et al., “The Preparation of Germane,” J. Inorg. & Nuclear Chem. (1957), 4, 2, p. 22-23.
J. E. Griffiths, “Monogermanes—Their Synthesis and Properties,” J. E. Inorg. Chem. (1963), 2(2), p. 375-377.
A. A. Efremov, et al., “Adsorption of Ultrapure Volatile Inorganic Hydrides on Different Adsorbents,” Plenum Publishing Corporation (1992), p. 468-474.
A. M. Tolmachev, et al., “Deep Purification of Hydrides by the Adsorption Method,” Plenum Publishing Corporation (1988), p. 240-244.
V. Y. Orlov, et al., “Deep Purification of Hydrides by the Adsortion Method,” Plenum Publishing Corporation (1988), p. 245-248.
A. A. Efremov, et al., “Some Questions Concerning the Dynamics and Efficency of Sorption Purification in the Trace Concentration Range,” Plenum Publishing Corporation (1991), p. 255-267.
J. E. Drake, et al., “Hydrides of Germanium,” J. Chem. Soc. (1962), p. 2807-2813.
A. D. Zorin, et al., “Preparation of Monogermane by the Reaction of Germanium (IV) Chloride with Sodium and Potassium Terahydroborates,” Russian Journal of Inorganic Chemistry, 15 (8), (1970), p. 1048-1050.
L. M. Antipin, et al., “Reactions of Germanium Tetrachloride with Potassium and Sodium Tetrahydroborates,” Russian Journal of Inorganic Chemistry, 13 (2), (1968), p. 162-164.
W. L. Jolly, “The Preparation of the Volatile Hydrides of Groups IV-A and V-A by Means of Aqueous Hydroborate,” J. Amer. Chem. Soc. (1961), Vo. 83, p. 335-337.
G. G Devyathykh, et al., “Electrochemical Synthesis of Specifically Pure Germane,” Plenum Publishing Corporation (1988), p. 235-239.
E. D. Macklen, “Preparation of Germane. Part I. Reaction between Lithium Aluminum Hydride and Germanium Tetrachloride,” J. Chem. Soc. (1959), p. 1984-1988.
E. D. Macklen, “Preparation of Germane. Part II. Reaction between Sodium Borohydride and Germanium Tetrachloride,” J. Chem. Soc. (1959), p. 1989-92.
S. Sujishi, et al., “Reactions of Germanium Tetrachloride with Lithium Aluminohydrides. Lithium Tri-t-butoxyaluminohydride as an Efficient Reagent for the Preparation of Germane,” J. Amer. Chem. Soc. (1958), vol. 80, p. 4138-4140.

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

Process for purification of germane does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for purification of germane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purification of germane will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3678107

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