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High-density adsorbent and method of producing same

  • US 4,999,330 A
  • Filed: 02/21/1989
  • Issued: 03/12/1991
  • Est. Priority Date: 03/22/1988
  • Status: Expired due to Term
First Claim
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1. A method of producing a dimensionally stable, high-density adsorbent, comprising the steps of:

  • a) mixing high surface area carbon particles with a solution of a binder in a solvent to form a slurry and thereby wet each particle of carbon with the solution of binder, said binder being selected from the group consisting of methylcellulose and a polyvinyl alcohol;

    b) removing the solvent from the slurry prepared in step (a) to obtain particles of carbon coated with a film of the binder; and

    c) compacting the binder-coated particles of carbon under pressure of about 140 to about 600 MPA to provide a compacted mass of high surface area carbon particles bound together and defining a network of substantially to cause a reduction of about 50 to about 200% in bulk volume of the mass and a corresponding increase of about 50 to about 200% in density, thereby obtaining an adsorbent capable of withstanding powdering when subjected to vibration and exhibiting a gas storage capacity increase of about 20 to about 100% over that of the high surface area carbon particles in loose form.

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