Hollow porous-wall glass microspheres and composition and process for controlling pore size and pore volume
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Dec 4, 2008
filing date -
Dec 4, 2008
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Abandoned
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Abstract
A porous wall hollow glass microsphere is provided having a diameter range of between 1 to 200 microns, a density of between 1.0 to 2.0 gm/cc, a porous-wall structure having wall openings defining an average pore size of between 10 to 1000 angstroms, and which contains therein a hydrogen storage material. The porous-wall structure may be modified by precise control of heat treatment temperatures of precursor hollow glass microspheres such that the pore diameter and percentage of pore formation may be regulated. The ability to control characteristics of porosity allow customization of specific applications for the PWHGM in a variety of biomedical, sensor, hydrogen storage, and other microencapsulation technologies.
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