Abstract:
THE PRESENT INVENTION RELATES TO A PROCESS OF HYDROGENATING OIL AT ELEVATED TEMPERATURE, BY MEANS OF A CATALYST CONTAINING ELEMENTARY COPPER AND NICKEL ON A THERMOSTABLE CARRIER MATERIAL. THE CATALYST IS OBTAINED IN THREE SEPARATE STEPS; IN THE FIRST STEP A HOMOGENEOUS LAYER OF HYDRATED NICKEL OXIDE IS PRECIPITATED ONTO THE THERMOSTABLE CARRIER MATERIAL, IN THE SECOND STEP AN INSOLUBLE COPPER COMPOUND IS PRECIPATED IN HOMOGENEOUS DISTRIBUTION ONTO TE LAYER OF HYDRATED NICKEL OXIDE, AND IN THE THIRD STEP THE LOADED CARRIER MATERIAL IS SUBJECTED TO A REDUCTIVE TREATMENT AT A TEMPERATURE ABOVE 150*C.
Abstract:
THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PREPRATION OF A CATALYST MASS FROM DILUTE AQUEOUS SOLUTIONS OF COPPER AND NICKEL SALTS, PARTICULARLY PRECIPITATION OF A COPPER COMPOUND OUT OF AN AQUEOUS SOLUTION ONTO A THERMALLY STABLE CARRIER MATERIAL SUSPENDED THEREIN. THE COPPER COMPOUND IS SECURED TO THE CARRIER MATERIAL VIA A NICKEL COMPOUND AND IS REDUCED TO METALLIC COPPER AFTER BEING SO SECURED. COPPER CATALYSTS HAVE A WIDE FIELD OF APPLIATION IN DEHYDROGENATION REACTIONS, E.G., THE DEHYDROGENATION OF CYCLOHEXANOL TO CYCLOHEXANONE AND OF ISOPROPYL ALCOHOL TO ACETONE. COPPER CATALYSTS ARE ALSO VERY SUITABLE FOR CARRYING OUT SELECTIVE HYDROGENATION PROCESSES, THERE ARE INDICATIONS THAT METALLIC COPPER SURFACES MAY GREATLY ACCELERATE THE OXIDATION OF HYDROCARBONS E.G. CUMENE VIA RADICAL MECHANISMS.
Abstract:
A method and apparatus for applying a thin, protective coating to individual granules by generating a liquid screen of the coating material at one end of a vertical shaft, passing the granules down through the screen and onto baffles disposed in the lower portion of the shaft. The liquid will pass down the walls of the shaft and onto the baffles and become entrained with the granules impinging thereon. A rotary drum is provided adjacent the discharge end of the shaft to intimately mix the materials passing out of the shaft.
Abstract:
A process relating to the separation of melamine from hot synthesis gas mixtures is described, wherein such gases are contacted directly with a urea melt containing ammonium carbamate, so that the desublimation heat released as the melamine is converted from the vapor to the solid state is utilized for the decomposition of the ammonium carbamate to release ammonia and carbon dioxide.
Abstract:
A METHOD FOR THE PRODUCTION OF CARBON MONOXIDE AND HYDROGEN BY THE INCOMPLETE COMBUSTION OF METHANE WITH OXYGEN AND OPTIONALLY IN THE PRESENCE OF NITROGEN IS DISCLOSED. THE COMBUSTION IS CONDUCTED IN AN INTERNAL ENGINE SUPPLIED WITH A MIXTUREOF THE THREE GASES, PREFERABLY WITHIN THE PROPORTIONS OF ABCB OF FIG. 1.
Abstract:
A PROCESS FOR THE PREPARATION OF (2-CYANOETHYL) KETONES BY THE HYDROLYSIS OF THE CORRESPONDING (2-CYANOETHYL)-N-SUBSITUTED KETOIMINE WITH THE SUBSEQUENT RECOVERY OF A PRIMARY AMINE, THE PRIMARY AMINE BOILING AT A LOWER TEMPERATURE THAN WATER AND/OR FORMING WITH WATER AN AZEOTROPE BOILING AT A LOWER TEMPERATURE THAN WATER AND CARRYING ON ITS NITROGEN ATOM THE SAME GROUP AS THAT OF THE NITROGEN ATOM OF THE CORRESPONDING KETOIMINE IS DISCLOSED. WHEN THE RESULTING KETONE IS 5-CYANOPENTANONE-2 THIS MAY BE USED AS A STARTING PRODUCT FOR THE PREPARATION OF A-PIPECOLINE.
Abstract:
THE PREPARATION OF ACICULAR COBALT-CONTAINING PERMANENTLY MAGNETIZABLE MATERIAL IS DESCRIBED WHEREIN THE PH VALUE OF A SOLUTION CONTAINING A COBALT SALT AND A FERROUS SALT, OR A COBALT SALT AND A NICKEL SALT OR A COMBINATION OF SAID THREE SALTS, IS HOMOGENEOUSLY INCREASED AT A CONTROLLED TEMPERATURE AND WITH AGITATION, FOLLOWING WHICH THE RESULTING PRECIPITATE IS THEN SUBJECTED TO A REDUCTIVE TREATMENT IN A SEPARATE LIQUID PHASE.
Abstract:
A process for the production of urea from ammonia and carbon dioxide, combined with the preparation of ammonia, is disclosed wherein ammonium carbamate in the urea solution produced is removed from said urea solution by subjecting the urea solution to two stripping stages. The first stripping stage uses the urea synthesis starting gas, which contains hydrogen, nitrogen and carbon dioxide. The second stripping stage, which is at substantially the same pressure as the first stripping stage, uses a gas containing at least one of the components needed in the ammonia synthesis. This second stripping gas is substantially free of ammonia and carbon dioxide. The disclosed process has the advantage, compared to prior processes, that the stripping gases need not be compressed at relatively high temperatures.
Abstract:
Objects composed of a metal-coated polyamide plastic, and a process for making same are disclosed in which a polyamide plastic substrate material is made by the hydrolytic polymerization of an omego lactam carried out at a temperature at least at the melting point of the polyamide material in the presence of one or more compounds soluble in the molten lactams, such as polyethers, alcohols of fatty acids having a boiling point above the lactam, organic sulphones, alkali metal halides, paraffins and silicone oils. After appropriate surface treatment of this plastic material, metal coating is deposited by precipitation and by further treatment as by electro deposition, to obtain the metal-coated polyamide plastic object.
Abstract:
COPOLYMER CONTAINING AT LEAST 35 WEIGHT PERCENT OF ACRYLONITRILE AND THE CYCLIC ANHYDRIDE OF A-METHYLENE GLUTARIC ACID, PREFERABLY RANGING FROM 0.1 TO 10 WEIGHT PERCENT, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.1 AND 20; AND PROCESS FOR PREPARING SAME.