Abstract:
An affinity filter and method of using same, effective in capturing and thereby removing particles characterized by surface exposure of anionic phospholipids present in a biological fluid, particularly blood or blood-derived products. Examples of other biological fluids include semen, cerebrospinal fluid, urine and mucous. The affinity filter includes a body formed with an inlet and an outlet, including a solid support and an anionic-phospholipid binding compound linked to the solid support. The positively charged anionic-phospholipid binding compound serves for specifically binding the particles characterized by surface exposure of anionic phospholipids and thereby removing the particles from the biological fluid, and particularly from blood or blood-derived products, for example in order to prepare the blood or blood-derived product for transfusion into a subject.
Abstract:
A fuel cell system comprises a fuel cell including an anode and cathode, a fuel reformer, and a water gas shift reactor. The fuel cell system is shutdown by shutting down electrical generation and then supplying air to the water gas shift reactor to oxidize CO and H2 remaining in the water gas shift reactor after shutdown of electrical generation. The introduction of air to the water gas shift reactor controls CO poisoning of the fuel cell and the emission of flammable and poisonous gases from the fuel cell system after the shutdown of electrical generation.
Abstract:
A thin-walled carbonaceous honeycomb structure having a large surface to weight ratio and consisting of thin-walled carbonaceous cells; and a process for making the same.
Abstract:
Improved platinum catalyst with high life period, activity and selectivity for the production of hydroxylammonium salts by the reduction of nitric oxide with hydrogen, the catalyst being obtained by hydrolyzing the water soluble platinum compound at a pH of 4.5 to 9.0 and at a temperature of 20* to 100* C. in the presence of a carrier which is insoluble in strong acids, thereby precipitating platinum oxide hydrate onto said carrier in finely divided form and thereafter reducing the platinum oxide hydrate to metallic platinum.
Abstract:
Hydrogen cyanide is oxidized to cyanogen by contacting hydrogen cyanide and oxygen with a substantially anhydrous liquid medium containing a Group VIII noble metal, preferably in complex with a biphyllic ligand at a temperature between 20* and 300* C. and at a pressure sufficient to maintain liquid phase conditions. A preferred embodiment is contacting hydrogen cyanide and oxygen with a carboxylic acid containing a complex of rhodium chloride and triphenylphosphine at a temperature between 20* and 150* C. The process is advantageous in that use of an inorganic nitrogen oxide promoter is not required.
Abstract:
CYCLIC POLYMERS OF THE FORMULA (PNCLL2)N WHEREIN N IS AN INTEGER OF AT LEAST 3 ARE PREPARED BY REACTING PHOSPHORUS PENTACHLORIDE WITH AMMONIUM CHLORIDE IN THE PRESENCE OF A CATALYST OF THE FORMULA PAX, WHEREIN $ IS OXYGEN OR SULPHUR AND X IS CHLORINE OR BROMINE, THE PHOSPHORUS PENTACHLORIDE, AMMONIUM CHLORIDE AND TH CATALYST BEING IN SPECIFIED MOLAR PROPORTIONS.
Abstract:
A process is described for preparing anchored, transition metal catalysts by a displacement reaction in which the diphenylphosphino group on a cross-linked polystyrene of the general formula:
IRREVERSIBLY DISPLACES A MORE WEAKLY BOUND LIGAND IN THE COORDINATION SPHERE OF AN HOMOGENEOUS TRANSITION METAL CATALYST COMPLEX. The preferred transition metals are rhodium, ruthenium and iridium. The anchored catalysts, are generally useful in promoting H-D exchange between hydrogen-containing gas streams and liquid water or alcohols. These catalysts are also active in hydrogenation, hydroformylation and polymerization reactions.
Abstract:
THIS INVENTION RELATES TO A METHOD FOR MANUFACUTRING A CATALYST AND ITS CARRIER HAVING A VACANT CENTER OR A DENSE CENTER. SUCH A CARRIER IS MADE INTO PELLET FORM BY COVERING A DESIRED CORE WITH A FINELY DIVIDED MATERIAL, DRYING AND CALCINING THE RESULTANT PELLET. SUCH A CATALYST IS MADE OF A CARRIER TO WHICH A SOLUTION CONTAINING A CATALYTIC COMPOUND IS IMPREGNATED, AFTER WHICH THE IMPREGNATED CARRIER IS CALCINED.