Abstract: A process for producing a supported catalyst for the synthesis of methacrolein and methacrylic acid in which a catalytic active substance comprising a composite oxide containing molybdenum and bismuth as essential components is supported on the inside surface and/or the outside surface of an inert carrier, which comprises the steps of drying a mixed solution or an aqueous slurry containing the compounds of the elements constituting the catalytic active substance, subjecting the dried product to a primary calcination at a temperature in a range of 200.degree.-400.degree. C. to form a catalytic active substance precursor, comminuting the obtained catalytic active substance precursor to such an extent that the medium particle size in the volume-based particle size distribution becomes 10 .mu.m or less, supporting the comminution product on an inert carrier, and subjecting it to a secondary calcination at a temperature which is 100.degree. C. or more higher than the primary calcination temperature.

Abstract: A process for the alkylation of alkenes having from 2 to 6 carbon atoms with an alkane having from 4 to 6 carbon atoms to afford an alkylate comprises reacting in the liquid phase the alkene and alkane under alkylation conditions in the presence of a novel catalyst comprising: a) a refractory inorganic oxide, b) the reaction product of a first metal halide and bound surface hydroxyl groups of the refractory inorganic oxide, c) a second metal cation, and d) optionally a zerovalent third metal. The refractory inorganic oxide is selected form the group consisting of alumina, titania, zirconia, chromia, silica, boria, silica-alumina, and combinations thereof and the first metal halide is a fluoride, chloride, or bromide of aluminum or boron. The second metal cation is selected from the group consisting of: monovalent metal cations in an amount from 0.0026 up to about 0.20 gram atoms per 100 grams refractory inorganic oxide for lithium, potassium, cesium, rubidium, silver, and copper, and from 0.012 to about 0.

Abstract: Provided is a heat-resistant oxide exhibiting excellent oxygen storage capacity under a high temperature oxidation-reduction fluctuating atmosphere regardless of reduction of its specific surface area, and this heat-resistant oxide is expressed in the following general formula:Ce.sub.1-(x+y) Zr.sub.x R.sub.y O.sub.2-zwhere R represents a rare earth metal, z represents an oxygen deficiency, x represents an atomic ratio of 0.15 to 0.70, y represents an atomic ratio of 0.05 to 0.25, and x+y represents a range of 0.20 to 0.95 respectively.

Abstract: The present invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating component used in solid-state oxygen separation devices. The compositions of the present invention are represented by the formula Ln.sub.x A'.sub.x ' Co.sub.y Fe.sub.y' Cu.sub.y" O.sub.3-z wherein Ln is an element selected from the f block lanthanides as represented by the IUPAC periodic table of the elements, A' is selected from strontium or calcium, x>0, y>0, y'>0, x +x'=1, y +y'+y"=1, 0.ltoreq.y"<0.4 and z is a number which renders the composition of matter charge neutral. These compositions provide a favorable balance of oxygen permeance, resistance of degradation when employed in such devices under high oxygen partial pressures and possess coefficients of thermal expansion which are compatible with other materials used to fabricate such devices.

Abstract: A process for opening C.sub.5 and C.sub.6 rings without substantial cracking. A feedstream containing compounds comprised of at least one C.sub.5 -ring, at least one C.sub.6 -ring, or both, is contacted, in the presence of hydrogen, with a transition metal catalyst selected from the group consisting of carbides, nitrides, oxycarbides, oxynitrides, and oxycarbonitrides. The transition metal is selected from the group consisting of metals from Groups IVa, Va, and VIa of the Periodic Table of the Elements.

Abstract: A process is disclosed for the catalytic norbornylation of aromatics comprising the steps of contacting norborene and an aromatic hydrocarbon with an acidic solid catalyst containing a Group IVB metal oxide modified with an oxyanion of a Group VIB metal under norbornylation conditions to evolve a product containing norbornylated aromatics.

Abstract: Disclosed are aqueous dispersions of dibutyltin oxide which contain water, dibutyltin oxide in substantial amounts on the order of 50 to 75 wt. %, as well as a fatty acid ethoxylate surfactant, a suspending agent, and a viscosity modifier component of one or more C.sub.12 -C.sub.24 fatty acids and/or alkali metal salts thereof.

Abstract: A mono-methylation process for the production of methylated aromatics by reacting aromatics with dimethylcarbonate in the presence of a metal oxide or binary metal oxide catalyst. A process for preparing toluene from benzene by reacting with dimethylcarbonate and a process for preparing xylene from toluene by reacting with dimethylcarbonate are described.

Abstract: An exhaust gas emission control catalyst includes an under catalyst layer containing catalyst particles of platinum and rhodium and a crystalline metal silicate support for supporting the catalyst particles and an over catalyst layer, coated on the under catalyst layer, containing catalyst particles of palladium.

Abstract: The invention concerns a supported catalyst in the form of packing and constructed on an open-pore support material on whose external and internal surfaces a macro-porous ion exchange resin is mechanically and/or chemically affixed.

Abstract: The present invention generally relates to supported mono charged cation delta manganese dioxide hydrate having a noble metal on the surface thereof, and to the use thereof for low temperature oxidation of volatile organic compounds (VOCs), particularly oxygen-containing VOCs. The present invention further relates to the use of the supported catalysts to reduce the amount of VOCs present in waste gases produced by processes such as baking, brewing, and flexographic printing. Catalysts prepared from the supported manganese-containing catalysts have increased resistance to poisoning in the presence of catalyst contaminants, e.g., sulfur containing compounds.

Abstract: Hydroconversion of paraffin containing hydrocarbon feeds is effected over a supported Group VIII and Group VI metal containing catalyst also containing a hydrocracking suppressant such as a Group IB metal, wherein the catalyst is preferably prepared by fixing the Group IB metal on to the support prior to incorporating the Group VI metal on to the support.

Abstract: A solid acid catalyst for paraffin conversion which consists of an acid salt of a heteropoly acid being represented by the following general formula:A.sub.x H.sub.(3-x) PY.sub.12 O.sub.40wherein A represents one ion selected from the group consisting of alkali metal ion and ammonium ion; Y represents at least one atom selected from the group consisting of W and Mo; x represents a number of 2.2 to 2.8, and a metal Group VIII, wherein the acid salt of heteroply acid has been impregnated in the metal of Group VIII, and paraffin conversion process using the same.

Abstract: A catalyst suitable for hydrogenating organic compounds, essentially containing from 65 to 80% of nickel, calculated as nickel oxide, from 10 to 25% of silicon, calculated as silicon dioxide, from 2 to 10% of zirconium, calculated as zirconium oxide, and from 0 to 10% of aluminum, calculated as aluminum oxide, with the proviso that the sum of the content of silicon dioxide and aluminum oxide is at least 15% (percentages in % by weight, based on the total weight of the catalyst), obtainable by addition of an acidic aqueous solution of nickel, zirconium and, if desired, aluminum salts to a basic aqueous solution or suspension of silicon compounds and if desired aluminum compounds, the pH of the mixture thus obtained being decreased to at least 6.

Abstract: Described is catalyst that is active and selective for reducing to molecular nitrous oxides contained in a superstoichiometric medium of oxidizing agents, said reduction being conducted with agents such as carbon monoxide, hydrogen, hydrocarbons, alcohols, ethers, and other oxidized organic compounds and also with ordinary fuels such as gasolines, gas oils, liquefied gases, and compressed natural gases, whereby said catalyst comprises:at least one refractory inorganic oxide, including alumina;at least one element (A) that belongs to the group of rare earths;at least one element (B) that belongs to groups VIB, VIIB, VIII and IB of transition metals;at least one metal (C) that belongs to the group of precious metals of the platinum family, and optionallyat least one element (D) that belongs to group IIA of alkaline-earths;at least a portion of elements (A) is combined with alumina to form at the surface of the latter a microlayer of rare-earth aluminate.

Abstract: Activated carbon is bonded to a thermally conductive solid support as a porous sorbent body by forming a carbon slip containing activated carbon particles and a low-temperature-curing binder in an oil-in-water emulsion, and curing the carbon slip in place against the solid support. Furthermore, a microporous monolithic carbonaceous body of fused or otherwise bonded activated carbon particles, which can consists strictly of activated carbon or of a mass of activated carbon particles bonded to a shaped open lattice-type or finned substrate structure, is bonded to a surface of a substrate which is generally complementary in contour to the carbonaceous body by applying a liquid-form heat-curable binder formulation to the contact surfaces. The binder formulation contains an inert liquid carrier or solvent.

Abstract: A process for the conversion of a halogenated organic feedstock to produce a stream of hydrocarbonaceous compounds having an exceedingly low concentration of halogenated organic compounds and an aqueous stream containing hydrogen halide.

Abstract: A process for obtaining a substantial amount of olefinic products from a residua feedstock by use of a short vapor contact time thermal process unit comprised of a horizontal moving bed of fluidized hot particles.

Abstract: The present invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating components used in solid-state oxygen separation devices. The compositions of the present invention are represented by the formula Ln.sub.x A'.sub.x' A".sub.x" B.sub.y B'.sub.y' B".sub.y" O.sub.3-z, wherein Ln is an element selected from the f block lanthanides, A' is selected from Group 2, A" is selected from Groups 1, 2 and 3 and the f block lanthanides, and B,B',B" are independently selected from the d block transition metals, excluding titanium and chromium, wherein 0.ltoreq.x<1, 0<x'<1, 0.ltoreq.x"<1, 0<y<1.1, 0<y'<1.1, 0<y"<1.1, x+x'+x"=1.0, 1.1>y+y'+y">1.0 and z is a number which renders the compound charge neutral wherein such elements are represented according to the Periodic Table of the Elements adopted by IUPAC.

Abstract: Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins present in the process. Two separate modes of regeneration are performed simultaneously on different portions of the catalyst: a partial liquid-phase hydrogenative regeneration at reaction conditions and a high temperature (complete) liquid-phase hydrogenative regeneration.