| Patent Number |
Title Of Patent |
Date Issued |
| 5614000 |
Purification of gases using solid adsorbents |
March 25, 1997 |
| A method for the removal from a feed gas stream such as air of at least two contaminating gas components such as water and CO.sub.2 features repeated cycles of operation the improvement which comprise: feeding a regenerating gas such as dry nitrogen at a higher temperature, e.g. 70.degre |
| 5540759 |
Transition metal salt impregnated carbon |
July 30, 1996 |
| The present invention is a synthesis, product and process for activated carbon and preferably carbon molecular sieve separation of air to produce a nitrogen product wherein a carbon is partially pyrolyzed, impregnated with a transition metal salt and further pyrolyzed to develop enhanced |
| 5536302 |
Adsorbent for removal of trace oxygen from inert gases |
July 16, 1996 |
| An adsorbent and a process for its use in removing trace oxygen from an inert gas. The adsorbent comprises a porous reducing support such as activated carbon, carbon black, coal, petroleum coke and titania which is impregnated with about 10% to about 90% by weight of an alkali metal oxid |
| 5531809 |
Pretreatment layer for CO-VSA |
July 2, 1996 |
| The present invention is an apparatus and method for preferentially adsorbing carbon monoxide from a gas stream containing carbon monoxide in the presence of water and potentially ammonia while not adsorbing methane, hydrogen or carbon dioxide which may be present in the gas stream using |
| 5529763 |
CO adsorbents with hysteresis |
June 25, 1996 |
| The Present Invention is directed to a composition, its synthesis and a process for adsorptive separation of carbon monoxide from gas mixtures using adsorbents, which comprise cuprous compounds on amorphous oxide macroporous supports. The compositions are prepared by impregnating cupric |
| 5507860 |
Composite porous carbonaceous membranes |
April 16, 1996 |
| Improved composite semipermeable membranes including microporous carbonaceous adsorptive material supported by a porous substrate for use in separating multicomponent gas mixtures in which certain components in the mixture adsorb within the pores of the adsorptive material and diffuse |
| 5482915 |
Transition metal salt impregnated carbon |
January 9, 1996 |
| The present invention is a synthesis, product and process for activated carbon and preferably carbon molecular sieve separation of air to produce a nitrogen product wherein a carbon is partially pyrolyzed, impregnated with a transition metal salt and further pyrolyzed to develop enhanced |
| 5447557 |
Oxygen selective adsorbents |
September 5, 1995 |
| An oxygen selective adsorbent and a method for making an oxygen selective adsorbent wherein a porous carbon substrate such as a carbon molecular sieve, activated carbon, carbon black, coal, or petroleum coke, is impregnated with a solution of an acidic species and the impregnated sub |
| 5431864 |
Method of making composite porous carbonaceous membranes |
July 11, 1995 |
| Improved composite semipermeable membranes including microporous carbonaceous adsorptive material supported by a porous substrate for use in separating multicomponent gas mixtures in which certain components in the mixture adsorb within the pores of the adsorptive material and diffuse |
| 5360467 |
Method of separating and detecting impurities using a fractional concentration detector |
November 1, 1994 |
| A method for detection of impurities at very low levels in hydrogen, oxygen or specialty gases comprises the metered mixture with high purity helium and subsequent selective separation of hydrogen, oxygen or specialty gas with the detection of impurities remaining in the helium by ioniza |
| 5300271 |
Method for separation of carbon monoxide by highly dispersed cuprous compositions |
April 5, 1994 |
| The present invention is directed to active compositions, such as adsorbents and catalysts, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on pretreated supports with the aid |
| 5258571 |
Separations using highly dispersed cuprous compositions |
November 2, 1993 |
| The present invention is directed to a process for adsorptive separation of carbon monoxide or olefins from gas mixtures using adsorbents, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric |
| 5175137 |
Highly dispersed cuprous compositions |
December 29, 1992 |
| The present invention is directed to a process for adsorptive separation of carbon monoxide or olefins from gas mixtures using adsorbents, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric |
| 5135548 |
Oxygen selective desiccants |
August 4, 1992 |
| Composite oxygen selective desiccants comprising a carbon molecular sieve which is kinetically selective for the adsorption of oxygen over nitrogen and an agent for the sorption of water such as lithium chloride, lithium bromide, calcium chloride, magnesium chloride, calcium nitrate, pot |
| 5126310 |
Highly dispersed cuprous compositions |
June 30, 1992 |
| The present invention is directed to active compositions, such as adsorbents and catalysts, which comprise cuprous compounds dispersed on amorphous oxide or carbon macroporous supports. The compositions are prepared by impregnating cupric compounds on pretreated supports with the aid |
| 5104425 |
Gas separation by adsorbent membranes |
April 14, 1992 |
| Composite semipermeable membranes comprising porous adsorptive material supported by a porous substrate are disclosed for use in a process for the separation of multicomponent gas mixtures. In the process, one or more primary components adsorb within the pores of the adsorptive material |
| 4957514 |
Hydrogen purification |
September 18, 1990 |
| Dilute impurities are removed from a hydrogen stream by selective adsorption in a bed of an X-type zeolite comprising barium cation. |
| 4702749 |
Technique for surface oxidation of activated carbon |
October 27, 1987 |
| 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, |
