Abstract: Sorbent material sheets are wound around a center core of material that includes additional sorbent. This configuration further increases the packaging efficiency and performance of the sorbent material sheets as part of an overall housing or apparatus. In some embodiments, the sorbent material sheets are arranged in a stacked configuration. Configurations of the sorbent material sheets as part of a canister are also described.

Abstract: Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

Abstract: Sorbent material sheets are wound around a center core of material that includes additional sorbent. This configuration further increases the packaging efficiency and performance of the sorbent material sheets as part of an overall housing or apparatus. In some embodiments, the sorbent material sheets are arranged in a stacked configuration. Configurations of the sorbent material sheets as part of a canister are also described.

Abstract: Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

Abstract: Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

Abstract: Adsorbents including a sorbent, at least one metal additive and greater than about 5 wt. % triethylenediamine are described herein. Methods for making such adsorbents and filters comprising the adsorbents are also described.

Abstract: An apparatus is provided for the detection of changes in concentrations or amounts of components of a fluid mixture by measuring changes in an electrical or a mechanical property of a sensing element when the sensing element is exposed to the fluid mixture. The preferred property of the sensing element to be measured is its electrical resistance which changes when the sensing element adsorbs at least one component of the fluid mixture.

Abstract: A method and apparatus for removing contaminates from an air stream in which an adsorbent activated carbon cloth is positioned in said air stream. The method and apparatus provide for impressing an electric current through the cloth adsorbent to desorb any contaminates adsorbed thereon.

Abstract: The present invention discloses an improved method for filtration of air within enclosed spaces. Improvement is achieved by the use of a high-temperature carbonaceous char that is catalytically active for the removal of certain undesirable constituents from contaminated air under ambient temperature conditions. This carbonaceous char is used as an air filtration medium and incorporated into an air filtration device by any of a number of technologies. Such devices may be used for removal of contaminants such as NO.sub.x, NO.sub.2, SO.sub.x, SO.sub.2, H.sub.2 S, mercaptans, light aliphatic gases such as butane and propane and other compounds such as benzene, hexane, toluene, xylene, amines and the like from enclosed or confined structures such as buildings or vehicles including automobiles, aircraft, trucks, farm equipment, and the like.

Abstract: The present invention discloses an improved method for filtration of air within enclosed spaces. Improvement is achieved by the use of a high-temperature carbonaceous char that is catalytically active for the removal of certain undesirable constituents from contaminated air under ambient temperature conditions. This carbonaceous char is used as an air filtration medium and incorporated into an air filtration device by any of a number of technologies. Such devices may be used for removal of contaminants such as NO.sub.x, NO.sub.2, SO.sub.x, SO.sub.2, H.sub.2 S, mercaptans, light aliphatic gases such as butane and propane and other compounds such as benzene, hexane, toluene, xylene, amines and the like from enclosed or confined structures such as buildings or vehicles including automobiles, aircraft, trucks, farm equipment, and the like.

Abstract: An activated carbon adsorbent for removing nosioux gases and vapors from a contaminated air stream, and method of making same. The activated carbon has impregnated therein at least one compound selected from each of three groups of compounds. The three groups of compounds comprise sulfuric acid and sulfuric acid salts; molybdenum compounds, and copper compounds and zinc compounds. The amount of at least one sulfuric acid or salt thereof compound present is up to 10% by sulfate, by weight, the one molybdenum compounds is present in amounts up to 10% by weight, as molybdenum, and the total amount of copper or zinc compounds present is a total amount not greater than 20% by weight as total copper and zinc. The disclose adsorbents are desirably used in universal filters.

Abstract: Impregnated activated carbon adsorbents for the removal of toxic materials from gas streams are used in a variety of respiration and collective filter applications. The activated carbon impregnated adsorbents in the present invention remain effective in removing toxic gases and/or vapors in military, industrial and other applications, and are free of chromium and its potential health hazards. Generally, these activated carbons are comprised of an activated carbon adsorbent impregnated so as to result in an activated carbon containing 0 to 14% copper and 2 to 16% zinc, optionally supplemented according to the desired characteristics with silver, triethylenediamine, and prepared with or without the use of organic acid. The adsorbent carbons of the present invention have been found to be effective for removing a variety of toxic gases and/or vapors.

Abstract: This invention is a process for the preparation of a symmetrical or unsymmetrical dihydrocarbyl carbonate which comprises contacting an aliphatic, cycloaliphatic or di(aryl-substituted aliphatic) alcohol or mixtures thereof with carbon monoxide and oxygen in the presence of a catalytic amount of bis((2,4-pentanedianato)copper (II) methoxide) and a cocatalytic amount of a basic nitrogen-containing coordination compound under conditions such that a symmetrical or unsymmetrical dihydrocarbyl carbonate is prepared.