摘要:
This invention relates to a catalyst, to a process for the manufacture thereof and to a process for manufacturing hydrogen by reacting carbon monoxide with water at 150*-550*C in the presence of the above catalyst. This catalyst comprises an active phase consisting of the mixed oxides of (a) copper and (b) a trivalent metal selected from aluminum, chromium, manganese, iron and cobalt, at least 60% by weight of said mixed oxides having a spinel structure. The catalyst is manufactured by admixing the catalyst components in solution with a heat-decomposable complexing organic compound or with a heat-decomposable gelforming compound, the solvent being evaporated thereafter and the mixture being finally roasted at a temperature of at least 200*C.
摘要:
METHOD FOR THE OXIDATIVE DEHYDROGENATION OF PARAFFINS TO PRODUCE OLEFINS BY CONTACTING THE PARAFFINS WITH MOLECULAR OXYGEN IN THE PRESENCE OF MOLTEN ALKALI METAL HYDROXIDES, ALUMINUM, AND A SOLUBLE TRANSITION METAL OXYANION INCLUDED IN THE MOLTEN ALKALI METAL HYDROXIDE.
摘要:
A CATALYST FOR THE HYDROGENATION OF NITRO-COMPOUNDS WHICH IS COMPRISED OF A NICKEL-ALUMINUM ALLOY PROMOTED WITH A METAL OR MIXTURES OF METALS OF GROUP VIII AND CONTAINING AN ADDITION OF A METAL OF THE GROUP II. A METHOD OF PRODUCING SAID CATALYST COMPRISING ALLOYING NICKEL AND ALUMINUM WITH A METAL OR MIXTURES OF METALS OF GROUP VIII AND A METAL OF GROUP II WITH THE SUBSEQUENT LEACHING OF 3-5 WT. PERCENT OF ALUMINUM FROM THE ALLOY OBTAINED. THE PRESENT CATALYST EXHIBITS HIGH STABILITY, IS CAPABLE OF A PROLONGED AND CONTINUOUS SERVICE LIFE, PROVIDING AN 80-100% YIELD OF THE DESIRED PRODUCTS.
摘要:
Catalyst for the oxidation of an Alpha , Beta -unsaturated aldehyde to an Alpha , Beta -unsaturated carboxylic acid, said catalyst comprising (A) a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen, and (B) at least one oxide or oxygen containing compound of the elements lead, silver, copper, tin, titanium or bismuth, said catalyst having an atomic ratio of antimony to molybdenum to vanadium to tungsten to Group (B) elements of about 1 - 60 : 12 : 0.5 - 25 : 0.1 - 12 : 0.1 - 12. Processes for the use and preparation of the catalysts are provided.
摘要:
GRANULAR OR PELLETED CATALYSTS SUITABLE FOR USE IN THE VAPOUR PHASE OXIDATION OF ORGANIC COMPOUNDS CONTAINING ANTIMONY AND TIN AS OXIDE COMPOSITIONS WHICH HAVE BEEN PRETREATED IN POWDER FORM BY HEATING IN AN INERT ATMOSPHERE TO 200 TO 500*C. AND THEREAFTER PELLETED AND REHEATED IN MOLECULAR OXYGEN TO 550 TO 1000*C.
摘要:
A resid hydrocarbon is converted to lower boiling hydrocarbons and/or desulfurized by contacting, in the presence of hydrogen, said resid with a bed of catalyst particles, substantially all of said particles having a surface-to-volume ratio ranging between about 100 and about 250 l/inches, and wherein substantially all points within each of said particles are less than about 0.015 inch from the particle''s surface. When one of these particles is circumscribed by a right circular cylinder having an altitude equal to that of the particle, the particle contacts the sidewall of the cylinder at at least three elements and occupies from about 70 to about 90 percent of the cylinder''s volume. Preferred particle shapes are clover-leaf, cross, ring and C-shape.
摘要:
A CATALYST OR CATALYST CARRIER FOR SIDE REACTIONS OF CATALYTIC CRACKING OF HYDROCARBONS ESSENTIALLY CONSISTING OF AN ALKALI POLYALUMINATE SELECTED FROM THE GROUP CONSISTING OF B-ALUMINA (R2O.11AL2O3), B''-ALUMINA (R2O.7-8AL2O3), AND B"-ALUMINA R2O.5-6AL2O3) WHEREIN R IS NA OR K, RESPECTIVELY, AND A CATALYST OR A CATALYST CARRIER OF A MIXTURE FOR SIDE REACTIONS OF CATALYTIC CRAKING OF HYDROCARBONS WHICH ESSENTIALLY CONSISTS OF A LEAST 1% BY WEIGHT OF SAID ALKALI POLYALUMINATE AND A REFRACTORY INORGANIC MATERIAL.
摘要:
CATALYST COMPOSITIONS ARE PROVIDED CONTAINING ALUMINIUM OXIDE AND FROM 50% TO 90% BY WEIGHT OF OXIDE OF COPPER, CHROMIUM AND NICKEL, WHICH MAY OPTIONALLY BE DOPED WITH GROUP II-A METAL COMPOUNDS, THE OXIDE OF NICKEL AMOUNTING FROM 2% TO 20% BY WEIGHT OF THE CATALYST. THE CATALYSTS ARE MANUFACTURED BY MIXING POWDERED CALCINED OXIDE OF COPPER AND CHROMIUM WITH ALUMINIUM OXIDE OR ALUMINIUM OXIDE HYDRATE, FORMING CATALYST GRANULES FROM THE MIXTURE AND THEN IMPREGNATING THE GRANULES WITH A NICKEL COMPOUND WHICH ON CALCINATION WILL FORM THE CATALYST. THE CATALYSTS ARE USED IN THE OXIDATIVE PURIFICATION OF WASTE GASES PARTICULARLY MOTOR VEHICLE EXHAUST GASES.
摘要:
A CATALYST FOR THE OLOGOMERISATIION OF OLEFINS E.G. BUTENES TO OCTENES AND DODECENES, IS PREPARED BY CONTACTING SILICA GEL SEQUENTIALLY WITH AQUEOUS SOLUTIONS CONTAINING (I) ALUMINIUM IONS (II) ALKALI METAL IONS (III) NICKEL IONS IN THAT ORDER, AND THEN ACTIVATING THE CATALYST BY HEATING IN AIR OR AN INERT GAS TO 400-1000* C. THE OLIGOMERS HAVE A LOW DEGREE OF BRANCHING, AND ARE PRODUCED BY CONTACTING THE CATALYST WITH THE OLEFIN AT A TEMPERATURE FROM 0 TO 300* C. AND A PRESSURE FROM 0 TO 5000 P.S.I.G.