Technique for surface oxidation of activated carbon
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United States of America Patent
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Oct 27, 1987
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N/A
app pub date -
Jun 24, 1986
filing date -
Jun 24, 1986
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Expired
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Abstract
A mild oxidizing acid wash of activated carbon in the presence of an oxidation catalyst produces an adsorbent, with a large carboxyl IR spectra peak, having a favorable water adsorption isotherm that can be used for both pressure swing adsorption, PSA, or thermal swing adsorption, TSA, drying of gases. The oxidation catalyst is a metal salt wherein the metal is selected from the group consisting of copper, chromium and nickel.
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