Bromine-impregnated activated carbon and process for preparing the same
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United States of America Patent
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Feb 4, 2003
Grant Date -
May 31, 2001
app pub date -
Jul 24, 1998
filing date -
Jul 25, 1997
priority date (Note) -
Expired
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Abstract
A bromine-impregnated activated carbon wherein the contents of any alkali metal, any alkali earth metal and iron are not higher than 0.3 wt % and the content of bromine is not lower than 3 wt %, with respect to the weight of a material activated carbon. The bromine-impregnated activated carbon has improved adsorption characteristics to the alkyl sulfides, which have not been sufficiently removed by activated carbons prepared by the conventional techniques. Further, variations in the absorption characteristics can be reduced and the activated carbon can exhibit a stable performance in removing the alkyl sulfides.
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