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WO/1987/005232A1 |
A mixture of same diameter, cylindrical catalyst particles are length graded into a first group having a a length L1 and a value of L/D greater than one, and a second group having a length greater than L1, by: feeding the mixture into a ...
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WO/1987/002272A1 |
Method for catalytic purification of exhaust fumes and is characterised in that catalytically active substances (promoters) are supplied in gaseous form from a container (4) to the catalyst in an exhaust purifier (3), thus reactivating t...
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WO/1987/001303A1 |
Spent catalysts containing metal impurities are treated by a process comprising treating the spent catalyst with a solution containing oxidizing ferric ion and/or oxidizing bacteria, thereby freeing said spent catalyst of said metal impu...
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WO/1986/006750A1 |
A process for the recovery of noble metals from a catalyst-tar formed in a process in which acetic anhydride is prepared by carbonylating methyl acetate in the presence of a noble metal containing catalyst such as rhodium, lithium and me...
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WO/1986/003188A1 |
A method of recovering vanadium from an aqueous ammonium bicarbonate solvent strip solution. The method includes heating the aqueous ammonium bicarbonate solution at a temperature of from 70oC to 100oC, followed by addition of sulfuric a...
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WO/1984/003057A1 |
A method for the recovery and reuse of an expensive palladium-tin catalyst whereby alkali hydroxide or carbonate is added to the exhausted catalytic solution and/or the spent rinse water solution to precipitate out a catalyst residue, wh...
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WO/1982/001829A1 |
A process for recovering rhodium catalyst from a liquid composition comprising rhodium catalyst and tar by liquid-liquid extraction. The liquid composition is formed during the preparation of acetic anhydride in a carbonylation process b...
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WO/1982/000961A1 |
A method for reactivating a catalyst, which comprises previously heat-treating a used catalyst containing molybdenum as an active ingredient having a reduced activity under specific temperature conditions in a reducing gas atmosphere wit...
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WO/1980/002809A1 |
A method of regeneration of rhodium-containing catalysts, deactivated and poisoned with sulphur in the course of dealkylation of alkylbenzols or their technical mixtures with steam or hydrogen, comprising stages of coke firing in an oxyg...
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JP2024058422A |
The present invention provides a technology for recovering platinum group metals from raw materials containing platinum group metals at low temperatures. [Solution] The platinum group metal recovery method of the present invention includ...
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JP7472733B2 |
To provide a method for stably producing alcohol for a long time, capable of reusing a degraded catalyst for alcohol production with reduced activity or alcohol selectivity in the production of alcohol by hydration reaction of an olefin ...
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JP7471863B2 |
To provide a cleaning method that can recover DOC purification performance.The present disclosure provides a method for cleaning an oxidation catalyst device for diesel automobiles. The oxidation catalyst device for diesel automobiles ha...
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JP7470793B2 |
Disclosed is a method for reducing carbon deposits on a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-ch...
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JP7464523B2 |
The purpose of the present invention is to provide a denitration catalyst abrasion method and a denitration catalyst abrasion device which are capable of improving denitration catalyst abrasion efficiency. Provided is a denitration cat...
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JP7451195B2 |
The purpose of the present invention is to provide: a regenerated denitration catalyst having restored denitration performance compared to a denitration catalyst before use, by using a used denitration catalyst; and a production method t...
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JP2024511854A |
The present invention relates to a 1,3-butadiene production process comprising reacting feeds comprising ethanol and acetaldehyde in a 1,3-butadiene production reactor having at least one adiabatic reaction zone. Further, the present inv...
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JP2024511665A |
The present invention is a process for producing 1,3-butadiene from ethanol and acetaldehyde with catalyst regeneration comprising: a) a feed comprising ethanol and acetaldehyde in a reactor having at least one adiabatic reaction zone co...
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JP2024034429A |
[Problem to be solved] To provide a sulfur-free catalyst system capable of carrying out a hydrolysis reaction of esters, etc. at normal pressure and low temperature, and causing no carbon loss. [Solution] (i) a composite metal oxide comp...
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JP7449415B2 |
The present application discloses a fluidized bed regenerator, a device for preparing low-carbon olefins, and a use thereof. The fluidized bed regenerator includes a second activation zone, a first activation zone, and a gas-solid separa...
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JP7449414B2 |
The present application discloses a coke control reactor, a device for preparing low-carbon olefins from an oxygen-containing compound, and a use thereof. The coke control reactor includes a riser reactor and a bed reactor; the bed react...
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JP2024510185A |
Systems, methods, and computer-readable media are disclosed for providing catalyst maintenance recommendations based on trained machine learning models. The method includes extracting training data including one or more parameters from e...
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JP2024510113A |
The present invention is characterized in that - the base material and - the reduction in unit cell volume during sulfidation and desulfurization is determined by X-ray powder diffraction to be 10 Å.3A copper-containing small pore zeoli...
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JP2024509358A |
The present invention is a process for the preparation of 1-(1,3-benzodioxol-5-yl)-1-propanone from anhydrous 3,4-dimethylenedioxybenzene in the presence of a bulk or supported catalyst. a sulfonated crosslinked divinylbenzene resin, a s...
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JP7433234B2 |
A fluid treatment device includes a photocatalytic filter for deodorizing and sterilizing a fluid; a frame for fixing the photocatalytic filter; and a light source unit coupled to the frame. The light source unit includes a light source ...
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JP2024016087A |
The present invention provides a dehydrogenation catalyst with improved activity and stability in propane dehydrogenation, a catalyst composition, and a method for preparing the same. The primary species P1 is selected from the group con...
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JP2024504821A |
This application discloses methyl methoxyacetate and a method for producing glycolic acid and methyl glycolate by hydrolysis of methoxyacetic acid. The method includes the step of contacting a raw material containing methyl methoxyacetat...
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JP2024012800A |
[Problems] Regarding conventionally known catalysts, there is a problem that heat regeneration treatment at relatively low temperatures is difficult, and a catalyst base material is essential. There was an issue of poor gender. [Solution...
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JP2024504089A |
performing catalytic conversion of an olefin-rich feedstock in a first reaction area of a fluidized catalytic conversion reactor; and then converting the heavy feedstock into a reaction stream from the first reaction zone in a second rea...
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JP7422895B2 |
A method for controlling a reductant generation device 100, the reductant generation device 100 including: a sprayer 10 capable of spraying a reductant precursor 50; and a heater 20 comprising a ceramic substrate 21, the heater 20 being ...
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JP2024502551A |
According to one or more embodiments of the present disclosure, a method for producing olefins includes contacting a hydrocarbon-containing feedstock with a catalyst in a reactor portion of a reactor system to form an olefin-containing e...
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JP7416824B2 |
Processes and systems for dehydrogenating ethylbenzene may include mixing a steam stream and an ethylbenzene stream to form a feed mixture. The ethylbenzene / steam feed mixture may then be fed to a dehydrogenation reactor containing an ...
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JP2024502194A |
1) contacting the heavy feedstock with a catalytic conversion catalyst having a temperature of 650°C or higher for the reaction; 2) contacting the hydrocarbon oil feedstock with an olefin content of 50% by weight or higher for the react...
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JP2024502193A |
A fluidized catalytic conversion method for preparing low carbon olefins, the method comprising the following steps: 1) introducing an olefin-rich feed into a fluidized catalytic conversion reactor and converting it to 650° for reaction...
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JP7410192B2 |
The present disclosure provides a regeneration method of a nitrogen-containing carbon catalyst, including the following steps: roasting the nitrogen-containing carbon catalyst in a nitrogen-containing atmosphere to obtain a regenerated n...
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JP2023554549A |
The present invention is in the field of bio-LPG production methods and catalysts for use in the methods.
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JP7404098B2 |
To provide a catalyst (a catalyst for reductive reaction) which can obtain a 3,4-dihydroxytetrahydrofuran reduced product at a high selectivity using a raw material derived from biomass and can be recycled and used.There is provided a ca...
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JP7402343B2 |
Disclosed is a method for improving the stability of a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-chl...
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JP2023553148A |
The present invention relates to a method for recovering and reusing a selective homogeneous hydrogenation catalyst. The present invention synthesizes cyclododecene by selectively hydrogenating a first reaction solution containing cyclod...
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JP2023552856A |
The invention comprises a support based on at least one group VIB metal M1 and/or at least one group VIII metal M2, optionally phosphorus and/or sulfur, and oxide(s). The present invention relates to a method for producing recycled catal...
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JP2023176220A |
To clean a catalyst unit of a honeycomb monolith-type urea SCR system while maintaining the performance as a catalyst.A cleaning system is a cleaning system of a catalyst unit of a honeycomb monolith-type urea SCR system equipped with *B...
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JP7394080B2 |
The invention relates to a catalyst comprising a support based on alumina or silica or silica-alumina, at least one group VIII element, at least one group VIB element and at least one organic compound of formula (I)in which R1 is a hydro...
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JP7393113B2 |
The present application discloses a coke control reactor, and a device and method for preparing low-carbon olefins from an oxygen-containing compound. The coke control reactor includes a coke control reactor shell, a reaction zone I, and...
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JP7393114B2 |
The present application discloses a fluidized bed reactor, a device, and a production method. The fluidized bed reactor includes a main shell and a coke control zone shell; the main shell includes an upper shell and a lower shell; the up...
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JP7393115B2 |
The present application discloses a regeneration device, a device for preparing low-carbon olefins, and a use thereof. The regeneration device includes a first regenerator and a second regenerator; a first activation zone of the first re...
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JP2023550824A |
The present invention is a process for hydrodesulfurization of petroleum fractions, comprising contacting the petroleum fraction with hydrogen and a catalyst, the catalyst comprising an oxide support, sulfur and an active phase, the acti...
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JP7386519B2 |
To provide a method for extracting platinum group metal in a disposed catalyst and scrap by aqueous solvent efficiently.A pre-treatment method includes: a step of obtaining a heating product by heating a mixture of a raw material contain...
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JP7386226B2 |
A process for the catalytic cracking of hydrocarbon oils includes the step of contacting a hydrocarbon oil feedstock with a catalytic cracking catalyst in a reactor having one or more fast fluidized reaction zones for reaction. At least ...
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JP2023165618A |
To provide a method and a device for removing an unwanted catalyst coating.A method for partially removing a catalyst coating of an electric heating element includes the steps of: providing an electric heating element 1 coated with a cat...
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JP2023546068A |
Systems and methods are provided for using size reversing materials in vessels where direct heating is used to at least partially provide the heat for the reforming reaction under cyclic reforming conditions. Examples of size reversing m...
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JP2023544623A |
A method of equipment decontamination includes the steps of introducing into the equipment a wash stream comprising hydrogen and a solvent comprising a fatty acid methyl ester and an oxygenated solvent, or a carrier fluid and a hydrocarb...
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