Methods of generating hydrogen with nitrogen-containing hydrogen storage materials

A hydrogen storage, non-hydrogen technology, applied in the production of hydrogen, chemical instruments and methods, hydrogen, etc.

Inactive Publication Date: 2008-11-05
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, many current materials absorb or desorb hydrogen only at extremely high temperatures and pressures

Method used

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  • Methods of generating hydrogen with nitrogen-containing hydrogen storage materials
  • Methods of generating hydrogen with nitrogen-containing hydrogen storage materials
  • Methods of generating hydrogen with nitrogen-containing hydrogen storage materials

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0101] In the first experiment, the raw powder was mixed with 1 LiBH 4 : 2 LiNH 2 : n The equivalent molar ratio of LiH is mixed such that 1 mole of LiBH 4 with 2 molar LiNH 2 combined with variable molar amounts of LiH (as a third composition). These starting compounds react to release hydrogen according to the above-mentioned chemical reaction mechanism. LiBH 4 Commercially available (and specified ≥95% purity) from Lancaster Synthesis, Inc., Windham, New Hampshire, LiNH 2 Commercially available from Aldrich Chemical Co., St. Louis, Missouri (also designated > 95% purity).

[0102] LiH is commercially available from Alfa-Aesar, Ward Hill, Massachusetts. Typical purity is 98% based on metal, and it has an overall purity of 99.4%.

[0103] The raw material powders were sealed in a hardened steel ball mill jar and put into a glove box with an argon (Ar) inert atmosphere. One large and two small steel balls were placed into the jar along with the powder. The powder was ...

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Abstract

Methods of generating hydrogen-containing streams having a minimal concentration of gaseous reactive nitrogen-containing compounds, e.g., ammonia, are provided. Hydrogen storage material systems are also provided that generate such hydrogen-containing streams. A first composition comprising a nitride, a second composition comprising a hydride, and a third composition having a cation selected from the group consisting of: alkali metals, alkaline earth metals, and mixtures thereof are combined together. The hydrogen-containing stream thus generated has a minimal concentration of gaseous reactive nitrogen-containing compounds.

Description

technical field [0001] The present invention relates to hydrogen storage compositions, and more particularly, to methods of using the hydrogen storage compositions to produce a hydrogen-containing stream. Background technique [0002] Since hydrogen reacts cleanly with air to produce water as a by-product, it is desirable as an energy source. To enhance the utility of hydrogen as a fuel source, especially for use in mobile applications, it is desirable to increase the usable energy content per unit storage volume. Currently, this is accomplished through conventional means, such as cooling to a liquid state at high pressures of several thousand pounds per square inch (psi), or storing hydrogen bound up in a solid such as a metal hydride. Pressurization and liquefaction require expensive processing and storage equipment. [0003] Storing hydrogen in solid materials offers relatively high-capacity hydrogen densities and compact storage media. Hydrogen stored in a solid is de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02
CPCC01C1/026C01B6/21Y02E60/362Y02E60/327C01B3/065Y02E60/364C01B6/04Y02E60/32Y02E60/36C01B3/00C01G1/00
Inventor G·P·梅斯纳A·G·拜利M·P·巴洛格F·E·平克顿M·S·迈耶
Owner GM GLOBAL TECH OPERATIONS LLC
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