US Patent 7446078 Adsorbent for water removal from ammonia
Patent 7446078 was granted and assigned to AIR PRODUCTS AND CHEMICALS, INC. on November, 2008 by the United States Patent and Trademark Office.
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The present invention provides an adsorbent for removing water and/or other oxygen-containing impurities from a fluid comprising ammonia to the ppb level and methods for making and using same. The adsorbent preferably comprises a substrate having a plurality of pores and a surface area that ranges from about 100 to about 2,500 m2/g and a compound disposed within a least a portion of the substrate. In certain preferred embodiments, the compound comprises at least one cation from the group consisting of ammonium (I), lithium (I), sodium (I), potassium (I), cesium (I); magnesium (II), calcium (II), strontium (II), barium (II), manganese (II), nickel (II), iron (II), zinc (II); aluminum (III), indium (III), iron (III), and zirconium (IV) or combinations thereof that is ionically associated with an anion from the group consisting of halide, sulfide, sulfite, or sulfate.
US Patent 07446078 Adsorbent for water removal from ammonia US Patent 7446078 Adsorbent for water removal from ammonia
US Patent 07446078 Adsorbent for water removal from ammonia
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