摘要:
Double bond isomerization of olefins utilizing a catalyst comprising cobalt and sulfur on a porous carrier; the catalyst being prepared by forming an initial composite of the cobalt with the carrier material, sulfiding the initial composite to provide a sulfur/cobalt atomic ratio of at least about 1 in the sulfided composite, and then stripping sufficient sulfur from the sulfided composite with hydrogen to provide a final isomerization catalyst composition having a sulfur/cobalt atomic ratio of less than about 1 and more than about 0.55.
摘要:
A catalyst composition, particularly adapted for use in the production of dichloropropionic acid is provided. The catalyst composition comprises elemental iodine, which may be combined with a phosphorous trihalide or with bis (dimethyl thio carbamoyl) disulfide or with both. The catalyst composition makes possible the production of 2,2-dichloropropionic acid by direct chlorination of propionic acid, with substantially higher yields not heretofore obtainable in the production of 2,2dichloropropionic acid by direct chlorination of propionic acid.
摘要:
1. IN A PROCESS FOR MANUFACTURING A CATALYST CONSISTING ESSENTIALLY OF AN ALUMINA CARRIER HAVING A SPECIFIC SURFACE OF 120-500 M2/G. AND A PORE VOLUME OF 0.2-0.9 CC./G. NICKEL SULFIDE OR COBALT SULFIDE, AND A SULFIDE OF A GROUP VIA METAL, SAID SULFIDES BEING PRESENT IN A CATALYTIC AMOUNTS, WHICH PROCESS COMPRISES IMPREGNATING THE ALUMINA CARRIER WITH A SOLUTION OF COMPOUNDS OF SAID METALS WHICH FORM METALLIC OXIDES UPON CALCINING; CALCINING THE IMPREGNATED CARRIER; AND SULFIDING RESULTANT CALCINED CATALYST WITH A GAS CONTAINING HYDROGEN SULFIDE, THE IMPROVEMENT IN SAID IMPREGNATING AND CALCINING STEPS OF: (1) IMPREGNATING SAID CATALYST WITH A SOLUTION CONSISTING ESSENTIALLY OF A NICKEL OR COBALT COMPOUND CAPABLE OF FORMING AN OXIDE UPON CALCINING, DRYING AND THEN CALCINING THE IMPREGNATED PRODUCT IN THE PRESENCE OF AIR AT 700-850*C.; AND (2) IMPREGNATING RESULTANT CALCINED PRODUCT FROM STEP (1) WITH A SOLUTION CONSISTING ESSENTIALLY OF CATALYTIC QUANTITIES OF (A) A NICKEL OF COBALT COMPOUND CAPBALE OF FORMING AN OXIDE UPON CALCINING AND (B) A COMPOUND OF A GROUP VIA METAL CAPABLE OF FORMING AN OXIDE UPON CALCINING, DRYING AND THEN CALCINING THE RESULTANT IMPREGNATED PRODUCT IN AIR AT 400-600*C.; THE AMOUNT OF NICKEL OR COBALT OXIDE INCORPORATED IN THE CARRIER IN THE FIRST STEP BEING SUFFICIENT TO IMPROVE THE STABILITY OF THE CATALYST SO THAT THE COMBINATION OF STEPS (1) AND (2) YIELDS A CATALYST HAVING A HIGHER STABILITY DURING HYDROGENATION OF DIOLEFINS THAN A CORRESPONDING CATALYST PREPARED WITHOUT THE FIRST HIGH TEMPERATURE CALCINING STEP.
摘要:
A METHOD OF PREPARING A HYDROREFINING CATALYST FOR THE CONVERSION OF C7-INSOLUBLE ASPHALTENES AND SULFUROUS COMPONENTS IN A RESIDUAL OIL. THE CATALYST COMPRISES A REFRACTORY INORGANIC OXIDE CARRIER MATERIAL IMPREGNATED WITH A METAL OR GROUPS VI-B AND VIII. IMPROVED ACTIVITY AND STABILITY RESULTS FROM NOVEL OXIDIZING AND REDUCING PROCEDURES PRIOR TO SULFIDING OF THE CATALYST.
摘要:
A CATALYTIC STRUCTURE AND PROCESS FOR CATALYZING CHEMICAL REACTIONS. THE CATALYST STRUCTURE COMPRISES: (A) A METALLIC SUBSTRATE; AND (B) A FINELY DIVIDED CATALYTIC MATERIAL PARTIALLY EMBEDDED IN THE SUBSTRATE AND PROJECTING THEREFROM.
摘要:
A process for dehydrogenating an alkane to form an olefin by passing it over a catalyst comprising nickel or cobalt sulfide and cerium oxide alone or in combination with barium oxide, preferably on an alumina support, at a temperature of from about 550* to 625* C. and recovering the olefin.
摘要:
A NOVEL CATALYST COMPOSITION A CRYSTALLINE ZEOLITIC ALUMINOSILICATE IN ASSOCIATION WITH FROM 2 TO 15 WEIGHT PERCENT NICKEL, OR COMPOUNDS THEREOF, AND FROM 0.5 TO 10 WEIGHT PERCENT ARSENIC, OR COMPOUNDS THEREOF.
摘要:
A catalytic slurry process for effecting the conversion of a hydrocarbonaceous charge stock containing asphaltenes and metallic contaminants. The slurry constitutes the charge stock, hydrogen, a portion of the previously produced product effluent and from about 1.0 to about 25.0 percent by weight of finely divided catalyst particles. Preferred catalysts are the unsupported sulfides of the metals from Groups V-B, VI-B and VIII. A series of product separation steps facilitates catalyst circulation, catalyst withdrawal, and recovery of a substantially catalyst-free product.
摘要:
A catalytic slurry process for hydrorefining a hydrocarbonaceous charge stock containing hydrocarbon insoluble asphaltenes. The process is effected in slurry fashion with the charge stock being admixed with an aqueous solution of a double salt of the catalytically active metal sulfite and ammonium sulfite. The slurry is reacted at conditions including a temperature above about 225* C. and a pressure greater than about 500 p.s.i.g., and in the presence of hydrogen and hydrogen sulfide. The particularly preferred double salt is vanadyl sulfite-ammonium sulfite, and is employed in an amount of 1.0 percent to about 25.0 percent by weight, computed as elemental vanadium.
摘要:
ISOMERIZABLE HYDROCARBONS ARE ISOMERIZED USING A CATALYTIC COMPOSITE COMPRISING A COMBINATION OF A PLATINUM GROUP COMPONENT, A TIN COMPONENT, AND A RHENIUM COMPONENT WITH A POROUS CARRIER MATERIAL. A CATALYTIC COMPOSITE COMPRISING A PLATINUM GROUP COMPONENT, A TIN COMPONENT, A RHENIUM COMPONENT, AND A FIEDEL-CRAFTS METAL HALIDE COMPONENT COMBINED WITH A REFRACTORY INORGANIC OXIDE IS ALSO DISCLOSED.