Abstract:
IN SYNTHESIZING AMMONIA THROUGH REACTION BETWEEN NITROGEN AND HYDROGEN, IT IS POSSIBLE TO EFFECT SAID SYNTHESIS AT A LOWER TEMPERATURE BY THE USE OF A CATALYST COMPRISING AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF TRANSITION METALS BELONGING TO VI-B GROUP, VII-B GROUP AND VIII GROUP OF PERIOD TABLE AND AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, BOTH OF SAID ELEMENTS BEING SUBSTANTIALLY IN METALLIC STATE, TOGETHER WITH A PROMOTER OR A SUPPORT IN ADDITION THERETO AS OCCASION DEMANDS.
Abstract:
A CATALYST IS DESCRIBED WHICH WILL SELECTIVELY REDUCE THE LINOLENATE MOIETY OF POLYUNSATURATED VEGETABLE OILS. THE CATALYST IS PARTICULARLY CHARACTERIZED AS HAVING EXCELLENT REUSE PROPERTIES. A PROCEDURE FOR THE PREPARATION OF THIS HIGHLY ACTIVE CATALYST BY CHEMISORPTION OF COPPERAMMONIUM COMPLEX ON SILICA GEL IS ALSO DESCRIBED.
Abstract:
AN IMPROVED PROCESS FOR THE MANUFACTURE OF A CATALYST PARTICULARLY SUITABLE FOR USE IN A "FLUIDIZED" BED REACTOR AND COMPRISING AN OXIDE OF MOLYBDENUM AND A SUPPORTING MATERIAL DERIVED FROM A COLLOIDAL SOL OF AN OXIDE OF SILICON, ALUMINUM, TITANIUM OR ZIROCONIUM AS ESSENTIAL INGREDIENTS AND OPTIONALLY THE OXIDE OR OXIDES OF ONE OR MORE ADDITIONAL ELEMENTS, SAID PROCESS COMPRISING THE STEPS OF PREPARING A SLURRY OF THE CATALYST COMPONENTS BY ADDING TO AN AQUEOUS SUSPENSION OF A MOLYBDATE COMPOUND THE NECESSARY INGREDIENTS IN THE FOLLOWING ORDER: (A) THE REQUIRED AMOUNT OF COLLOIDAL SOL OF THE SUPPORTING OXIDE, (B) ACIDIC COMPONENTS IN THE FORM OF THEIR CORRESPONDING ACIDS, (C) THE REMAINING METAL COMPONENTS AS A SOLUTION OF THE COMBINED METAL SALTS; SPRAY DRYING THE RESULTANT CATALYST SLURRY, AND CALCINING THE SPRAY DRIED PARTICLES AT AN ELEVATED TEMPERATURE.
Abstract:
IN THE PRODUCTION OF ACRYLONITRILE BY A VAPOR PHASE REACTION OF PROPYLENE, AMMONIA AND OXYGEN AT AN ELEVATED TEMPERATURE, A PROCESS WHICH COMPRISES CONTACTING PROPYLENE, AMMONIA AND OXYGEN WITH A CATALYST COMPOSITION COMPRISING A CATALYST SYSTEM OF THE FORMULA:
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WHEREIN X REPRESENTS ONE OR MORE OF THE METALS, NI, MG AND CO AND A, B, C, D, E, F, G AND H REPRESENT, RESPECTIVELY, THE RELATIVE NUMBER OF ATOMS OF EACH COMPONENT, PROVIDED THAT, WHEN C IS 12, A IS 2 OR LESS, BUT NOT 0, B IS 0 5, E IS 0.1 TO 5, F IS NOT MORE THAN 15 BUT NOT 0, G IS 0 TO 15, F+G IS 2 TO 15, AND H IS DECIDED OR DETERMINED DEPENDING ON THE NUMBER OF THE OTHER ATOMS AND IS USUALLY FROM 38.3 TO 81.5.
Abstract:
HYDROCARBON CONVERSION CATALYSTS HAVING MARKEDLY IMPROVED CHARACTERISTICS ARE PREPARED FROM INTIMATE ADMIXTURES OF FORAMINOUS ALUMINA-CONTAINING REFRACTORY OXIDES AND ION EXCHANGEABLE CRYSTALLINE ALUMINOSILICATE ZEOLITES BY IMPREGNATION WITH A STRONG ACIDIC SOLUTION CONTAINING GROUP VIII AND GROUP VI METAL COMPOUNDS AND AN ACID OF PHOSPHORUS AT A PH BELOW 3, TO SUBSTANTIALLY DESTROY THE ZEOLITE CRYSTALLINITY.
Abstract:
NOVEL CATALYSTS ARE PREPARED BY CHELATING IONS OF A GROUP VIII NOBLE METAL, E.G., PLATINUM, WITH A POLYPHOSPHORIC ACID AND DEPOSITING THE CHELATE ON A POROUS SUPPORT. THE CATALYST IS ESPECIALLY USEFUL FOR ISOMERIZING HYDROCARBONS.
Abstract:
CATALYTIC HYDRATION OF OLEFINS TO ALCOHOLS AT ELEVATED TEMPERATURES AND PRESSURES WITH WATER IN GASEOUS PHASE IN THE PRESENCE OF A MINERAL CATALYST PREPARED BY IMPREGNATING A POROUS MINERAL ALUMINA-SILICATE, E.G. BENTONITE, HAVING AN AL2O3 CONTENT BELOW ABOUT 10% BY WEIGHT WITH PHOSPHORIC ACID.
Abstract:
OXIDATIVE DEHYDROGENATION CATALYSTS CONSISTING ESSENTIALLY OF PHOSPHORUS, TIN, A METAL SELECTD FROM THE GROUP CONSISTING OF GROUP IA METALS AND GROUP IIA METALS, AND OXYGEN, WHEREIN THE PHOSPHORUS IS PRESENT IN THE RANGE OF 0.1 TO 16 WEIGHT PERCENT, THE TIN IS PRESENT IN THE RANGE OF 15 TO 75 WEIGHT PERCENT, THE GROUP IA OR GROUP IIA METAL IS PRESENT IN THE RANGE OF 0.1 TO 10 WEIGHT PERCENT AND THE OXYGEN IS PRESENT IN SUFFICENT QUANTITY TO PRODUCE THE REMAINING TOTAL CATALYST COMPOSITION, ARE ACTIVATED BY CONTACTING THE FORMED PARTICLES OF CATALYST WITH WATER.
Abstract:
A CATALYST FOR OXIDATION OF OLEFINS, BASED ON BISMUTH, MOLYBDENUM AND OXYGEN, AS WELL AS SILICON, OR SILICON AND AN ALKALI METAL, OR SILICON AND BORON, OR SILICON, AN ALKALI METAL AND BARON, THE EMPIRICAL FORMULA OF THE CATALYST BEING
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WHERE
M IS AN ALKALI METAL; A=5-20 B=0.02-1 C=12 D=0-2.3 E=0.0.1 F=43-72
THE CATALYST MAY ALSO COMPRISE A CARRIER WITH THE SPECIFIC SURFACE OF 0.3-3 M.20G. IN AN AMOUNT OF 20-90% OF THE TOTAL WEIGHT OF THE CATALYST.
Abstract:
IMPROVEMENTS IN HYDROCARBON DEHYDROGENATION ARE REALIZED BY THE USE OF A CATALYST COMPRISING TIN AND/OR A TIN COMPOUND SUPPORTED ON AN ALUMINUM PHOSPHATE.