catalytic (Total 43265 Patents Found)

A feedstock containing one or more C 9 + aromatic compounds, and optionally benzene and/or toluene, undergoes conversion over a catalyst comprising a zeolite possessing a Constraint Index of from 1 to about 3 to provide a product containing a substantial amount of C 6 -C 8 aromatic compounds, e.g. benzene and xylene...
A catalytic combustor unit for a stationary combustion turbine includes a substrate composed of a plurality of intersecting walls defining a series of generally parallel passages aligned in rows and columns, open at their opposite ends and exposed to a heated flow of fuel and air mixture therethrough. The walls have se...
A process for catalytic reforming and for producing aromatics is carried out in the presence of a catalyst comprising at least one support, at least one metal from group VIII of the periodic table and at least one additional element M selected from the group formed by germanium, tin, lead, rhenium, gallium, indium, and...
A metal cooling tube of a water-cooled nuclear reactor, having an inner surface thereof exposed to an aqueous cooling medium containing hydrogen peroxide. The cooling tube has its inner surface coated with matter selected from the group consisting of the element manganese, molybdenum, zinc, copper, cadmium for absorbin...
An improved catalytic process for selectively ortho-alkylating a phenolic compound which comprises reacting a phenolic compound with an alcohol, optionally in the presence of water, and a catalyst composite consisting essentially of the calcination residue obtained from heating an admixture of magnesium carbonate and/o...
A CYCLIC FLUIDIZED CATALYTIC CRACKING PROCESS IS OPERATED WITH A CATALYST COMPRISING MOLECULAR SIEVE IN A SILICAALUMINA MATRIX, IMPREGNATED WITH ONE OR MORE GROUP IIA METAL OXIDES, TO PROVIDE FROM ABOUT 0.25 TO ABOUT 5.0 WT. PERCENT OF GROUP IIA METAL OR METALS. THE EMISSION OF SULFUR OXIDES IN THE REGENERATOR STACK GA...
Production of diesel oil from hydrocarbon-containing residues in an oil circuit with solids separation and product distillation for the diesel product with energy input by means of pumps and counterrotating agitators and by the use of fully crystallized catalysts of potassium, sodium, calcium, and magnesium-aluminum si...
The invention refers to a method for low-emission, non-catalytic combustion of a liquid fuel consisting of the following steps: separate introduction of the liquid fuel in a non-ignitable state into a mixing zone, vaporization of the liquid fuel in the mixing zone, separate introduction of a gaseous oxidizing agent int...
A catalytic heating system for heating a beverage or food that comprises: a container for containing the beverage or food and a catalytic combustion assembly for heating the container, with the catalytic combustion assembly comprising a fuel supply assembly having a fuel canister for supplying a fuel gas having a stoic...
Provided are an electrode including a nanostructure and a method of preparing the same, and more particularly, an electrode including a substrate, and a plurality of metal nanocups or nanorings spaced apart from one another and disposed on the substrate, and openings thereof are aligned above the substrate, and a metho...
Catalytic composition for producing an alpha-olefin and methods of making same. The catalytic composition includes a gamma-alumina substrate dopes with at least one element consisting of bismuth, copper, gallium, phosphorus, tin, and zinc, an amount of each element being within a range of from 150 parts per million to ...
A gas sensor for determining gas components in gas mixtures, e.g., for exhaust gases of internal combustion engines, includes a housing and a sensor element configured as a field effect transistor which has source, drain, and gate electrodes applied on a semiconductor substrate. A porous, catalytically active material ...
The invention relates to systems and methods for catalytic down-hole upgrading of heavy oil and oil sand bitumens. The method enables upgrading heavy oil in a production well within a hydroprocessing zone including the steps of: introducing a controlled amount of heat to the hydroprocessing zone; introducing a selected...
Improved reactors for catalytic, exothermic gas phase reactions with, as seen in the flow direction of a feed gas, which contains at least one oxidant and at least one component to be oxidized, an entry zone ( 1 ), a reaction zone ( 2 ) comprising at least one catalyst ( 4 ) and an exit zone ( 3 ) for the product gas a...
Catalytic processes have been developed for direct chemical conversion of amides to methyl ether polymers or methyl ether ladder polymers. Amides formed by reacting acetic acid with monoethanol amine (MEA) or acetic acid with butylamine were polymerized in the presence of transition metal catalysts in air to form linea...
The present invention relates to a process for improving the catalytic activity of a copper-promoted zeolitic catalyst with chabazite structure, to a copper-promoted zeolitic catalyst with chabazite structure and to a process for reducing nitrogen oxides in an offgas stream....
Described is a method to make liquid chemicals. The method includes deconstructing cellulose to yield a product mixture comprising levulinic acid and formic acid, converting the levulinic acid to γ-valerolactone, and converting the γ-valerolactone to pentanoic acid. Alternatively, the γ-valerolactone can be converte...
Provided is a beta-type zeolite which has a high catalytic activity and is not easily deactivated. The beta-type zeolite of the invention has a substantially octahedral shape, has a Si/Al ratio of 5 or more, and is a proton-type zeolite. The Si/Al ratio is preferably 40 or more. This beta-type zeolite is preferably obt...
The present invention relates to an active substance release system containing two compounds. The first compound comprises a nanoparticle, combined with an oligonucleotide inhibition strand that is hybridized with a catalytically active nucleic acid. The second compound comprises a carrier, combined with a substrate mo...
This invention provides methods and kits useful for determining whether a subject is afflicted with a disorder characterized by the presence of one or more known nucleic acid mutations. The instant methods comprise steps of nucleic acid molecule isolation, amplification, contact with one or more catalytic nucleic acid ...