Abstract: The catalytic cobalt compound used in the reaction of olefins with carbon monoxide and water or alkanols which employs an oxidizing treatment is reprocessed according to the present invention. This reprocessing includes in a first embodiment treating the cobaltic residue obtained as the distillation sump product with water and a carboxylic acid having 1 to 4 C atoms. The phases generated are separated and cobalt is recovered from the carboxylic acid/water phase in the form of the corresponding carboxylic acid salt. Where appropriate, the corresponding carboxylic acid salt is transformed into another carboxylic-acid salt.A second embodiment includes the steps of hydrogenating the cobalt containing residue obtained as the distillation sump product, separating the metallic cobalt which is obtained, reacting the metallic cobalt with an acid and where appropriate converting the cobalt salt so obtained into another cobalt salt.

Abstract: Catalysts for the preparation of carboxylates from an aldehyde and an alkanol in the presence of oxygen, which contain palladium and lead as active components, these being present on a carrier containing zinc oxide, and the palladium being applied as a palladium salt in a solution containing hydrochloric acid and then being liberated by reduction, and whose carrier consists solely of zinc oxide, are particularly active and selective.

Abstract: A catalyst composition consisting essentially of a molded article comprising an anhydrous inorganic potassium compound and metallic sodium and metallic potassium dispersed on the surface of the molded article, said molded article further containing 0.7 to 3% by weight, based on the weight of the inorganic potassium compound, of elemental carbon, the atomic ratio of metallic sodium to metallic potassium being in the range of from 20:80 to 90:10. This catalyst composition is useful for the dimerization or codimerization of alpha-olefins.

Abstract: A method is provided for producing a catalytic structure in the form of sheet or honeycomb for the gas phase reduction of nitrogen oxides. The method comprises: beating an inorganic fiber in water to form a slurry; forming the slurry into a sheet by paper-making means and drying the sheet; impregnating the sheet or a honeycomb structure manufactured therefrom which has a porosity of 60-85% with an impregnating slurry which contains titanium dioxide or its precursor in a concentration at least of 100 g/l and has a viscosity of 5-250 cps. at normal temperatures, drying, and when necessary calcining the structure; and then immersing the structure in a solution containing a catalytically active agent or its precursor, drying and calcining the structure, thereby to provide a porous catalytic structure having titanium dioxide and the catalytically active agent substantially uniformly dispersed and supported therein.

Abstract: A broad variety of modified inorganic oxides may be prepared by surface-metallating the oxide with a metal tetrahalide followed by displacement of a halogen bonded to the metal by a nucleophilic organic functional group. The results are organic moieties coating the surface of the oxide by being covalently bonded to a metal which, in turn, is covalently bonded to an oxygen originally associated with a surface hydroxyl of the inorganic oxide.

Abstract: This disclosure relates to a formed body having activated carbon granules bondedly carried by an inorganic substance body consisting of a sintered body or fused body of inorganic substance powder. The formed body preferably is of a honeycombed structure. The formed body is not only high in strength, excellent in absorbing ability, long in service life, but also permits of molding into various shapes fit for uses. The invention also relates to a method of producing the formed body of the type described above. The method essentially follows the conventional ceramic firing art or ceramic production art.

Abstract: A high surface area, porous active carbon matrix containing a substantially uniform dispersion of a metal or metal-containing material and methods for making and using the same are disclosed.

Abstract: In a process for treatment of a fresh iridium-containing catalyst, the improvement consists of a three step procedure in sequence including treatment with oxygen, treatment with hydrogen chloride, and treatment with a reducing agent such as hydrogen.

Abstract: The useful life of vanadium-phosphorus-oxygen (PVO) catalyst in fixed bed reactors can be substantially extended by treatment with a phosphorus compound followed by steam treatment. The PVO catalysts may be treated with steam after long periods (months) of only phosphorus compound treatment and the benefit of the present invention obtained or the phosphorus and steam treatments may be of only a few hours duration and sequential. In extending the useful life of the PVO catalyst according to the present invention, the temperature profile in the catalyst bed is restored to substantially the same profile as the fresh catalyst.

Abstract: A process for removing nickel, cobalt, molybdenum, and vanadium from spent hydroprocessing catalyst particles by roasting the catalyst at between 400.degree. C. and 600.degree. C. and leaching the catalyst particles with an aqueous solution of ammonia and an ammonium salt.

Abstract: A method of reacting carbon monoxide and hydrogen to form light hydrocarbons and alcohols in a slurry phase and in the presence of iron-containing active carbon catalyst is disclosed.

Abstract: The disclosed electrode includes an electroconductive substrate and an electron-transfer catalyst immobilized on the conductive support surface by being covalently bonded thereto via a linking ligand. The link (ligand) used to covalently bond the catalyst to the support surface can be either electrically conductive or non-conductive.

Abstract: In the process of converting an aromatic feedstock to an alkyl-substituted mono-nuclear aromatic product by contacting the feedstock with a coke-selectivated ZSM-5 type catalyst at elevated temperature under conversion process coking conditions to produce said alkyl-1-substituted mononuclear aromatic product selectively, the improvement which comprises:regenerating the process coked catalyst in contact with a non-oxidizing atmosphere comprising an effective amount of hydrogen at a temperature of about 800.degree. F. to 1200.degree. F. to restore activity of the catalyst while retaining selectivity. Advantageously, the conversion involves alkylation, disproportionation and/or isomerization to produce at least one lower alkyl or dialkyl benzene product.

Abstract: The process of oxidatively regenerating in situ a fixed bed hydrocarbon catalyst which is sensitive to reactive sulfur compounds in a conversion system having sulfur-contaminated vessels and/or conduits in the flow path upstream from said catalyst is improved by passing regenerating oxygen-containing gas first through the sulfur-contaminated vessels and/or conduits and then through the fixed catalyst bed while limiting the water content of the regenerating gas to a concentration of not more than 0.1 mol percent throughout the flow path and at a temperature in the range of 750.degree.-1100.degree. F. to oxidize the sulfur contaminants in the vessels and/or conduits upstream from the catalyst. Thereby the evolved sulfur oxides flow through the fixed bed catalyst in the absence of sufficient water which would promote reaction of sulfur oxides with the catalyst.

Abstract: An electrode substrate for a fuel cell having a high porosity, a good mechanical strength and electroconductivity and a sharp distribution of pore radii is prepared by a process comprising mixing 30 to 50% by weight of carbon fiber, 20 to 50% by weight of a binder and 20 to 50% by weight of an organic granule, press-shaping the resultant mixture, curing the shaped product and calcinating the cured product.

Abstract: An improved fluorinated siliceous catalyst, well adapted for the catalytic synthesis of aromatic/aliphatic nitriles from their corresponding formamides, formanilides or amides, is comprised of a plurality of silica particulates, the specific surface of which ranging from about 200 to about 300 m.sup.2 /g, having a total pore volume ranging from about 1 to about 1.5 cm.sup.3 /g, with an average pore diameter ranging from about 100 to about 200 .ANG., having an exchange pH of less than about 3, and with the fluorine content thereof bonded to the silica, expressed in F.sup.-, ranging from about 0.05 to about 2% by weight based upon the silica, and the sodium content thereof, expressed as Na.sub.2 O, being less than about 1% by weight, also based upon the silica.

Abstract: Microcapsules with liquid fills containing Lewis acid catalysts, catalyst concentrates comprising slurries of the microcapsules in liquid media, and a method for preparing the microcapsules and concentrates. The catalyst concentrates of the present invention are storage stable both alone and when incorporated in a one-part epoxy formulation.

Abstract: A hydrosilation catalyst is provided having platinum atoms anchored onto a hydroxylated oxide of silicon or aluminum by Pt-S linkages through sulfur organo siloxy groups. A hydrosilation method and a method for making such platinum catalyst is also provided.

Abstract: A tungsten-containing catalyst associated with coke containing vanadium and nickel is recovered by a method which includes steam gasification, low temperature burning to remove at least a portion of the coke and selective extraction of the nickel and vanadium.

Abstract: The heat capacity of activated carbon adsorbent pellets is enhanced by the mixing of activated carbon powder with a higher heat capacity, inert inorganic material, such as dense alumina, prior to pelletizing. The resulting doped adsorbent enhances the operation of adiabatic pressure swing adsorption processes by decreasing the cyclic temperature change in the adsorbent bed during each processing cycle of the process.