Processes for preparing hydrogen gas and determining ratio of ma

Details Processes for preparing hydrogen gas and determining ratio of ma Processes for preparing hydrogen gas and determining ratio of ma

1992-04-03

1994-04-05

Langel, Wayne

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

C01B 308

Patent

active

053002768

ABSTRACT:
The present invention relates to a process for preparing hydrogen gas from the reduction of water, and also relates to a process for determining the ratio of the masses between hydrogen isotopes in the obtained hydrogen gas. The invention provides a process of preparing hydrogen gas comprising steps of: (i) preparing zinc metal particles having a size approximately in the range of 1 mm-2 mm by dropping a mixture of a selected amount of liquified zinc metal and 10 to 10000 ppm of nickel elements into a water bath; and (ii) reacting a sample of water with zinc metal particles at a selected reaction temperature to perform the reduction reaction of the water. The invention also provides a process of determining the ratio of the masses between hydrogen isotopes, .sup.1 H and .sup.2 H, in a sample of water. This process comprises a step of preparing hydrogen gas from the sample by the novel method described above.

REFERENCES:
patent: 3348919 (1967-10-01), Shumway
patent: 3928550 (1975-12-01), Seitzer
patent: 4005185 (1977-01-01), Ishizaka
patent: 4371500 (1983-02-01), Papinaeau
patent: 4588577 (1986-05-01), Cardinal
Anal. Chem., vol. 54, 1982, pp. 993-995, M. L. Coleman, et al., "Reduction of Water With Zinc For Hydrogen Isotope Analysis".
Anal. Chem., vol. 57, 1985, pp. 1437-1440, C. Kendall, et al., "Multisample Conversion of Water to Hydrogen by Zinc for Stable Isotope Determination".
Anal. Chem., vol. 24, No. 8, Aug. 1952, 3 pages, J. Bigeleisen, et al., "Conversion of Hydrogenic Materials to Hydrogen for Isotopic Analysis".

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