The activation of Mg2Ni with water

Abstract

For many years there has been great effort invested in finding alternative sources of energy for internal combustion engines. Since hydrogen com busts so well it is considered to be an attractive candidate for the eventual replacement of gasoline. An alloy well suited for storing hydrogen is Mg2 Ni, magnesium nickel. Mg2Ni is light and absorbs hydrogen to form the metal hydride compound Mg2 NiH4 When a metal or alloy is activated it can absorb hydrogen gas. The method currently in use for the activation of Mg2 Ni requires temperatures of 300-350-C and pressures of 300-450 psi for two to three days with occasional cycling1 This is an energy intensive approach to the activation of MgNi. The activation method is also time consuming and expensive.

ion of t-.lg2Ni. The activation method is also time consuming and expensive. A solution to this problem is presented in this treatise. Previous methods of Mg2Ni activation can be discarded since a more benign treatment has been discovered. Mg2 Ni can be quickly, safely, and inexpensively rendered suitable for hydrogen absorption. It has been discovered in the laboratory that when magnesium nickel is exposed liquid water or water vapor at ambient conditions, it becomes activated. The effects of water exposure duration have been ascertained, and this laboratory has shown that Mg2 Ni can be activated in an ambient humid environment, such as the humid atmosphere of Central Florida. Mg2Ni can also be activated with liquid water in as little as 10 seconds. DSC thermal analysis was used to help quantify Mg2 Ni activation. The extent of activation was evaluated by how much hydrogen a metal or alloy absorbed, and this was partly quantified by how closely the hydride approached NgNiH in stoichiometry.

Notes

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Graduation Date

1996

Semester

Spring

Advisor

Hampton, Michael D.

Degree

Master of Science (M.S.)

College

College of Arts and Sciences

Department

Chemistry

Format

PDF

Pages

66 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0028689

Subjects

Arts and Sciences -- Dissertations, Academic; Dissertations, Academic -- Arts and Sciences

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