Abstract: Composites and methods useful for oxygen sorption and other uses are presented, the composites comprising: (A) one or more crystalline ceramic oxides selected from compounds within general formula (1): AxA?x?ByB?y?O3-? and ??(1) (B) one or more crystalline ceramic oxides selected from compounds within general formulas (2), (3), (4), (5), (6), (7), and (8): A2BO4-???(2) A2B2O5-???(3) AO(ABO3-?)n??(4) AM2Cu3O7-???(5) Bi4V2(1-x)Me2xO11-3x,??(6) A?B?O3??(7) A2B2O7-?.

Abstract: Compositions and methods useful for oxygen sorption and other uses are presented, the compositions A composite material comprising components (A) and (B), wherein component (A) is selected from crystalline ceramic materials capable of forming a stable, reversible perovskite crystal phase at elevated temperatures (T>500° C.), and combinations thereof, and component (B) comprises a metal selected from rhodium (Rh), platinum (Pt), palladium (Pd), nickel (Ni) and silver (Ag), and combinations and alloys of these metals.

Abstract: An air shot or priming mechanism for an injection pen. The injection pen comprises a cartridge-holder and a housing. The cartridge-holder interacts with a nut-member capable of driving the piston rod forward when relatively rotated. The cartridge-holder is rotational coupled to the housing such that rotation of the cartridge-holder relatively to the housing causes the nut-member and the piston rod to rotate relatively, thus the relative angular rotation between the cartridge-holder and the housing determines the size of the air shot so performed.

Abstract: Supported perovskite-type oxides are described. The perovskite-type oxides have the general formula of AxA?x?ByB?y?O3??, wherein A is an ion of a metal of Group IIIa or IIIb of the periodic table of elements or mixtures thereof; A? is an ion of a metal of Groups Ia or IIa of the periodic table or mixtures thereof; B and B? are ions of a d-block transition metal of the periodic table or mixtures thereof; x, x?, y and y? vary from 0 to 1; 0.95<x+x?<1.05; 0.95<y+y?<1.05; ? is the deviation from ideal oxygen stoichiometry. This invention also provides for the selection of support materials and the shapes of supported perovskite-type oxides as well as the methods for making them.

Abstract: Compositions and methods useful for oxygen sorption and other uses are presented, the compositions being within the general formulas (1), (2), (3), and (4): AxByO3-?, ??(1) AxA?x?ByB?y?O3-?, and ??(2) AxA?x?A?x?ByB?y?B?y?O3-?, ??(3) MOn ??(4) and combinations thereof, especially those where the B sites are independently selected from cations of the d block transition metals Cr, Mn, Fe, Co, Ni, and Cu. One desirable set of compositions of the invention are combinations of any one or more of the compounds of generals formulas (1), (2), or (3) with one or more compounds of the general formula (4). In combination with an active support or matrix oxide within general formulas (1), (2), and (3), stability of the binary metal oxides within general formula (4) can be enhanced, while extending the oxygen sorption/desorption capacities of the matrix oxide.

Abstract: The present invention provides for a process of separating hydrocarbons such as short chain paraffins and olefins from non-hydrocarbon gases using short-cycle time concentration swing adsorption processes. The hydrocarbons are adsorbed from the gaseous stream on highly siliceous nanoporous materials, e.g., such as of aluminum-deficient faujasite-type zeolites, by way of a pressure, vacuum or temperature swing adsorption, then desorbed from the adsorbent in the presence of steam. Optionally, the steam is desorbed from the adsorbent through the use of air or inert gas or a recycle of the waste gas effluent. The invention also provides for a new method of preparing novel shapes such as beads and monolithic structures of the highly sileceous nanoporous materials.

Abstract: Compositions and methods useful for oxygen sorption and other uses are presented within the general formulas (1), (2), (3), (4), (5), (6), and (7): A2BO4?? (1) A2B2O5?? (2) AO(ABO3??)n (3) AM2Cu3O7?? (4) Bi4V2(1?x)Me2xO11?3x, (5) A?B?O3 where B? is W or Mo; (6) A2B2O7??, (7) and combinations thereof, wherein: A is a cation of atoms having atomic numbers ranging from 57-71, inclusive, a cation of yttrium, cations of Groups 1 and 2 atoms, and combination thereof; B is a cation of a d-block transition metal; A? is a cation of Na or Li; M is a metal cation selected from cations of Group 2 atoms; Me is a metal cation of Cu, Bi, and Co atoms; x ranges from 0.01 to 1.00; and ? ranges from 0.05 to 0.30. The compounds (1)-(7) may function as active supports for binary metal oxides to enhance the oxygen sorption/desorption capacity of the composites.

Abstract: Composites and methods useful for oxygen sorption and other uses are presented, the composites comprising: (A) one or more crystalline ceramic oxides selected from compounds within general formula (1): AxA?x?ByB?y?O3-???(1) and (B) one or more crystalline ceramic oxides selected from compounds within general formulas (2), (3), (4), (5), (6), (7), and (8): A2BO4-???(2) A2B2O5-???(3) AO(ABO3-?)n ??(4) AM2Cu3O7-???(5) Bi4V2(1-x)Me2xO11-3x, ??(6) A?B?O3 ??(7) A2B2O7-???(8)

Abstract: Compositions and methods useful for oxygen sorption and other uses are presented, the compositions A composite material comprising components (A) and (B), wherein component (A) is selected from crystalline ceramic materials capable of forming a stable, reversible perovskite crystal phase at elevated temperatures (T>500° C.), and combinations thereof, and component (B) comprises a metal selected from rhodium (Rh), platinum (Pt), palladium (Pd), nickel (Ni) and silver (Ag), and combinations and alloys of these metals.

Abstract: Supported perovskite-type oxides are described. The perovskite-type oxides have the general formula of AxA?x?ByB?y?O3-?, wherein A is an ion of a metal of Group IIIa or IIIb of the periodic table of elements or mixtures thereof; A? is an ion of a metal of Groups Ia or IIa of the periodic table or mixtures thereof; B and B? are ions of a d-block transition metal of the periodic table or mixtures thereof; x, x?, y and y? vary from 0 to 1; 0.95<x+x?<1.05; 0.95<y+y?<1.05; ? is the deviation from ideal oxygen stoichiometry. This invention also provides for the selection of support materials and the shapes of supported perovskite-type oxides as well as the methods for making them.

Abstract: An ostomy appliance comprising a front wall and a rear wall of flexible material forming a bag, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls has one or more vents through which gas may escape from the bag and having a filter covering said vent wherein gas inlet and outlet openings and provided in communication with a filter body, the arrangement being so that in use gas flows through the filter from the inlet opening to the outlet opening, such gas flow being confined to said filter body, wherein the gas inlet opening to the filter is provided with at least two separate and independent closed pathways having separated inlet openings communicating with the bag and separate and independent outlet openings communicating with the inlet opening of the filter, and wherein each of the outlet openings of the separate pathways are covered by a microporous membrane shows improved resistance against blocking of the inlet opening of filter.

Abstract: Method of forming a (CFX)n containing adsorbent composition by combining a fine particle (CFX)n starting material with a non-fluorinated carbonaceous material prior to the formation of a solid body and intermediate materials employed in conducting the method.

Abstract: Low silicon sodium X zeolite containing little or no sodium A zeolite as by-product, is prepared by direct synthesis from sodium ion-containing hydrogels, the crystallization step being carried out by maintaining the hydrogels at a temperature below about 70° C., and preferably in the range of about 50 to about 70° C. for the duration of the crystallization step. Preferably, the ratios of components in the solutions used to make the hydrogel are such that in the hydrogel the silica/alumina molar ratio will be in the range of about 2.25:1 to about 2.4:1; the sodium oxide to silica molar ratio will be in the range 1.6:1 to about 1.9:1; and the water to sodium oxide molar ratio will be greater than about 60:1.

Abstract: Zeolites exchanged with lithium, rubidium, cesium cations and trivalent cations are prepared by first partially, fully or excessively ion-exchanging a sodium-containing zeolite, a potassium-containing zeolite or a sodium- and potassium-containing zeolite with trivalent cations, then calcining the partially, fully or excessively trivalent cation-exchanged zeolite, and then ion exchanging the calcined zeolite with lithium rubidium, cesium cations, thereby replacing hydrogen and any sodium and/or potassium cations remaining in the zeolite with lithium, rubidium, cesium cations, whereby trivalent cations present in the zeolite will not be substantially replaced by the lithium ions.

Abstract: The present invention provides for methods and compositions for gas separation and purification utilizing a metallo-organic polymer adsorbent in processes for separating carbon dioxide, water, nitrogen oxides and hydrocarbons from gas streams.

Abstract: Supported perovskite-type oxides are described. The perovskite-type oxides have the general formula of AxA′x′ByB′y′O3-&dgr;, wherein A is an ion of a metal of Group IIIa or IIIb of the periodic table of elements or mixtures thereof; A′ is an ion of a metal of Groups Ia or IIa of the periodic table or mixtures thereof; B and B′ are ions of a d-block transition metal of the periodic table or mixtures thereof; x, x′, y and y′ vary from 0 to 1; 0.95<x+x′<1.05; 0.95<y+y′<1.05; &dgr; is the deviation from ideal oxygen stoichiometry. This invention also provides for the selection of support materials and the shapes of supported perovskite-type oxides as well as the methods for making them.

Abstract: The present invention provides for novel solid state O2-selective metal complex-based adsorbents and their utility for separating oxygen from a gas stream. In particular, the invention provides for an adsorption complex which contains four-coordinate O2-selective metal complexes including oligomeric/polymeric metal complexes, and organic base-containing polymers supported on porous materials.

Abstract: The present invention provides for a thermal swing adsorption process for the removal of trace impurities such as oxides of nitrogen and hydrocarbons from air prior to its separation by cryogenic distillation. The process may utilize three adsorbent layers, the first primarily removes water; the second primarily removes carbon dioxide; and the third layer is a composite adsorbent layer which removes the oxides of nitrogen and hydrocarbons from the air stream. Another embodiment employs a two layer adsorbent system to remove the impurities. Additionally, a single layer of composite adsorbent may be used to remove water, carbon dioxide, oxides of nitrogen, and hydrocarbons from the air stream.

Abstract: Nitrogen oxides and low molecular weight hydrocarbons are removed from air by subjecting the air to a temperature swing adsorption process using as the adsorbent a composite zeolite product containing both zeolite type A and zeolite type X. The composite zeolite product is prepared by crystallizing a sodium ion- or sodium ion- and potassium ion-containing alumina-silica hydrogel under conditions which result in the production of a zeolitic composite which contains both zeolite type A and zeolite type X crystal domains. In a preferred embodiment, calcium ions constitute a substantial number of the composite's exchangeable cations and the type X portion of the composite zeolite product has a silicon-to-aluminum atomic ratio in the range of 0.9 to less than 1.15. The nitrogen oxide- and hydrocarbon-selective adsorbent can be incorporated into an atmospheric air prepurification plant downstream of a water vapor-selective adsorbent and a carbon dioxide-selective adsorbent.

Abstract: Nitrogen oxides and low molecular weight hydrocarbons are removed from air by subjecting the air to a temperature swing adsorption process using as the adsorbent a composite zeolite product containing both zeolite A and zeolite X. The composite zeolite product is preferably prepared by forming a mixture of an agglomerate of silica and sodium zeolite X having a Si/Al atomic ratio in the range of about 0.9 to less than about 1.2 and a water-soluble sodium aluminate salt; maintaining the mixture at a temperature in the range of about 25 to about 100° C. for a period of time sufficient to convert at least 50% of the silica to sodium zeolite A; and at least partially exchanging the zeolite A-containing product with divalent cations, preferably calcium ions.