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Class 585/625 - Ferrite


Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter in which the agent is a compound of trivalent
No. of patents: 21
Last issue date: 07/24/2007


NumberTitleIssue Date
7247598Nano-scale magnetic solid base catalyst and its preparation method
This invention describes a nano-scale magnetic solid base catalyst and its preparation method. The catalyst involves a magnetic core coated with a solid base active layer. The synthesis of the nano-scale magnetic cores was first carried out using a rapid nucleation ...
07/24/2007
7164053Process for the production of olefins
Process for the production of an olefin from a hydrocarbon, which process comprises contacting the hydrocarbon and a molecular oxygen-containing gas with a catalyst under auto-thermal conditions sufficient to produce the olefin. The catalyst comprises a component (a...
01/16/2007
6566573Autothermal process for the production of olefins
A process and catalyst for the partial oxidation of paraffinic hydrocarbons, such as ethane, propane, naphtha, and natural gas condensates, to olefins, such as ethylene and propylene. The process involves contacting a paraffinic hydrocarbon with oxygen in...
05/20/2003
5877377Metal oxide catalyst and use thereof in chemical reactions
A method for conducting a chemical reaction with a catalyst composed of metal oxide particles among which are uniformly incorporated, in order to reduce the operating temperature of the catalyst, palladium particles....
03/02/1999
5866737Oxidation and oxydehydrogenation of hydrocarbons in the fluidized bed
A process for the oxidation and oxidative dehydrogenation of hydrocarbons, in particular ethylbenzene, to form corresponding oxidized or olefinically unsaturated compounds, in particular styrene, over an oxygen-conferring, oxygen-regenerable catalyst invo...
02/02/1999
4973793Oxidative dehydrogenation of amylenes
Cofeeding butylenes with amylenes in a catalytic oxidative dehydrogenation reaction substantially improves the conversion of the amylenes. The approved amylene conversion is obtained by the oxidative dehydrogenation of mixtures of amylenes and from 10 to ...
11/27/1990
4644088Acetylene removal process
A catalyst for removing acetylenic impurities from gaseous organic product streams, comprising at least Fe and Ni, other elements from Groups 8, 1b, 2b, 4b, 6b and 7b of the Periodic Table, an alkaline earth metal and an alkali metal....
02/17/1987
4547615Process for producing conjugated diolefins
A process for producing a conjugated diolefin, which comprises oxidatively dehydrogenating a monoolefin having at least 4 carbon atoms in the vapor phase with molecular oxygen to form the corresponding conjugated diolefin, said reaction being carried out ...
10/15/1985
4513159Acetylene removal process
A catalyst for removing acetylenic impurities from gaseous organic product streams, comprising at least Fe and Ni, other elements from Groups 8, 1b, 2b, 4b, 6b and 7b of the Periodic Table, an alkaline earth metal and an alkali metal....
04/23/1985
4413155Ammoxidation of olefins with novel antimonate catalysts
Oxide complex catalysts comprising Fe-Sb-Bi-Ox promoted with a wide variety of different elements have been found to be especially useful in the ammoxidation of olefins to nitriles such as acrylonitrile and methacrylonitrile. Not only are the d...
11/01/1983
4332972Modified zinc ferrite oxidative dehydrogenation catalysts in oxidative dehydrogenation
Improved oxidative dehydrogenation catalysts are prepared by modifying a preformed zinc ferrite oxidative dehydrogenation catalyst with zinc oxide. The resulting catalyst compositions exhibit higher conversions and yields....
06/01/1982
4150064Activating zinc ferrite oxidative dehydrogenation catalysts
Zinc ferrite oxidative dehydrogenation catalyst are activated by the use of only steam....
04/17/1979
4083884Calcium oxide modified zinc ferrite oxidative dehydrogenation catalysts and use
Improved oxidative dehydrogenation catalysts are prepared by modifying zinc ferrite oxidative dehydrogenation catalysts with calcium oxide. The resulting catalysts exhibit reduced carbonyl compound production when used in oxidative dehydrogenation....
04/11/1978
4067922Lithium ferrite catalysed oxidative dehydrogenation process
Oxidative dehydrogenation catalysts containing lithium, iron and oxygen, with or without aluminum or chromium, and containing the corresponding ferrite, give superior results and operate at generally lower temperatures than many other ferrite oxidative de...
01/10/1978
4058577Modified zinc ferrite oxidative dehydrogenation catalysts
Improved oxidative dehydrogenation catalysts are prepared by modifying a zinc ferrite oxidative dehydrogenation catalyst with manganese oxide. The resulting catalyst compositions exhibit higher conversions and yields....
11/15/1977
4020120Modified zinc ferrite oxidative dehydrogenation catalysts
Improved oxidative dehydrogenation catalysts are prepared by modifying a zinc ferrite oxidative dehydrogenation catalyst with magnesium oxide. The resulting catalyst compositions exhibit higher conversions and yields....
04/26/1977
3998760Modified zinc ferrite oxidative dehydrogenation catalysts
Improved oxidative dehydrogenation catalysts are prepared by modifying a zinc ferrite oxidative dehydrogenation catalyst with magnesium oxide. The resulting catalyst compositions exhibit higher conversions and yields....
12/21/1976
3953370Method of activating zinc ferrite oxidative dehydrogenation catalysts
Zinc ferrite oxidative dehydrogenation catalyst are activated by the use of only steam....
04/27/1976
3951869Modified zinc ferrite oxidative dehydrogenation catalysts
Improved oxidative dehydrogenation catalysts are prepared by modifying a zinc ferrite oxidative dehydrogenation catalyst with manganese oxide. The resulting catalyst compositions exhibit higher conversions and yields....
04/20/1976
3937748Oxidative dehydrogenation using gel precipitated catalyst preparation
Improved zinc ferrite oxidative dehydrogenation catalyst can be prepared by co-precipitating the catalysts from a solution of zinc and iron ions in the presence of a high molecular weight polyhydric material such as dextran in a 2 to 4 normal alkali metal...
02/10/1976
3937746Sulfur promoted oxidative dehydrogenation
The yield in oxidative dehydrogenation of organic compounds is improved by having a surfur promoter present either as part of the catalyst or added to the reaction with the reactants....
02/10/1976
 
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