Способ калибровки радиоизотопного измерительного прибора

PRODUCTION OF HYDROGEN PEROXIDE

PRODUCTION OF HYDROGEN PEROXIDE

Process and device for separating liquid from a multiphase mixture

Process and device for separating liquid from a multiphase mixture contained in a vessel and comprising solid particles and at least one liquid phase forming together at least one suspension, and a gas phase in which at least part of the mixture is circulated through at least one cross-flow filter located outside the vessel, therefore separating said part of the mixture into a filtered liquid and a concentrate.

METHOD FOR CONCENTRATING AN AQUEOUS HYDROGEN PEROXIDE SOLUTION

In a process for concentrating aqueous hydrogen peroxide solution to give two hydrogen peroxide streams of different concentration in an apparatus comprising a preevaporator (), a distillation column () and a vapour compressor (), in which the aqueous hydrogen peroxide solution to be concentrated () is continuously fed into the preevaporator, vapour () produced by evaporation in the preevaporator is fed to the distillation column, bottom product () obtained in the preevaporator is withdrawn as a first concentrated hydrogen peroxide stream (), vapour () produced in the distillation column is withdrawn from the distillation column at the top of the column, compressed by means of the vapour compressor and used for heating the preevaporator and the bottom product () obtained in the distillation column is withdrawn as a second concentrated hydrogen peroxide stream (), two concentrated hydrogen peroxide solutions having differing concentrations in the range from 50 to 70% by weight of hydrogen peroxide can be produced at the same time in a freely selectable ratio by feeding part of the bottom product obtained in the preevaporator in liquid form to the distillation column. 19-. (canceled)10. A process for concentrating an aqueous hydrogen peroxide solution in an apparatus comprising a preevaporator , a distillation column and a vapour compressor to give two hydrogen peroxide streams of different concentration , said process comprising feeding an aqueous hydrogen peroxide solution to be concentrated continuously to the preevaporator , feeding vapour produced by evaporation in the preevaporator to the distillation column , withdrawing bottom product from the preevaporator as a first concentrated hydrogen peroxide stream , withdrawing vapour from the distillation column at the top of the column and compressing it with the vapour compressor for heating the preevaporator , and withdrawing bottom product from the distillation column as a second concentrated hydrogen peroxide ...

PRODUCTION OF GRAPHENE AND NANOPARTICLE CATALYSTS SUPPORTED ON GRAPHENE USING MICROWAVE RADIATION

Microwave irradiation is used to synthesize graphene and metallic nanocatalysts supported on graphene either by solid or solution phase. In solid phase methods, no solvents or additional reducing agents are required so the methods are “environmentally friendly” and economical, and the graphene and nanocatalysts are substantially free of residual contaminants. Recyclable, high efficiency Pd nanocatylysts are prepared by these methods.

METHOD OF FORMING A CATALYST WITH AN ATOMIC LAYER OF PLATINUM ATOMS

A method of forming a catalyst material includes hindering the reaction rate of a displacement reaction and controlling the formation of platinum clusters, where an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms. 1. A method of forming a catalyst material , the method comprising:hindering the reaction rate of a displacement reaction to control the formation of platinum clusters, wherein an atomic layer of metal atoms is displaced with platinum atoms, to produce a catalyst material that includes an atomic layer of the platinum atoms.2. The method as recited in claim 1 , wherein the metal atoms comprise copper.3. The method as recited in claim 1 , wherein the hindering includes using a surfactant.4. The method as recited in claim 1 , wherein the hindering includes using citric acid.5. The method as recited in claim 1 , wherein the hindering includes using ethylenediamine tetraacetic acid (EDTA).6. The method as recited in claim 1 , wherein the hindering includes forming a coordination complex between a surfactant and at least one of the metal atoms and the platinum atoms.7. The method as recited in claim 1 , wherein the atomic layer of metal atoms is on a noble metal core.8. A method of forming a catalyst material claim 1 , the method comprising:displacing an atomic layer of metal atoms with platinum atoms in the presence of a surfactant to produce a catalyst material that includes an atomic layer of the platinum atoms.9. The method as recited in claim 8 , wherein the surfactant is selected from a group consisting of citric acid claim 8 , EDTA and mixtures thereof.10. The method as recited in claim 8 , wherein the surfactant is in solution with an acid and a platinum salt.11. A method of forming a catalyst material claim 8 , the method comprising:providing a particle that includes a metal core that is covered with an atomic layer of metal atoms;providing a solution that ...

Exhaust gas purifying catalyst device

An exhaust gas purifying catalyst device, which can have high durability against vibration and high temperatures, can be configured to suppress the peeling of the catalyst layer from the catalyst carrier member during use. Additionally, the metallic catalyst can be easily recovered after use. According to the present disclosure, an exhaust gas purifying catalyst device can comprise a catalyst carrier member on which metallic catalyst for exhaust gas purification can be carried characterized in that the catalyst carrier member can be formed of a sheet-like catalyst carrier made by a wet paper-making method, and that the metallic catalyst can be carried as a catalyst layer on surfaces of the sheet-like catalyst carrier after the sheet-like catalyst carrier has been baked.

EXHAUST GAS PURIFICATION OXIDATION CATALYST

The oxidation catalyst for exhaust gas purification provided by the present invention includes a support supporting a noble metal that catalyzes the oxidation of carbon monoxide (CO). The support is mainly constituted by a composite metal oxide including, in terms of oxides, Al and Zr, or Al, Zr and Ti at the following mass ratios: AlO40 to 99% by mass, ZrO1 to 45% by mass, and TiO0 to 15% by mass. 2. (canceled)4. (canceled)5. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an average particle diameter of the noble metal particles determined by a CO pulse adsorption method is equal to or less than 5 nm.6. The oxidation catalyst for exhaust gas purification according to claim 1 , further comprising a hydrocarbon adsorbent in at least part of the catalyst coat layer.7. The oxidation catalyst for exhaust gas purification according to claim 6 , comprising zeolite particles as the hydrocarbon adsorbent.8. The oxidation catalyst for exhaust gas purification according to claim 1 , wherein an initial specific surface area of the support measured by a BET 1 point method is equal to or greater than 110 m/g.9. (canceled)10. The oxidation catalyst for exhaust gas purification according to claim 1 , that is used for purifying exhaust gas of a diesel engine.11. An exhaust gas purification device that purifies exhaust gas discharged from an engine claim 1 , comprising:an exhaust passage communicating with the engine; andan exhaust gas purification unit disposed in the exhaust gas passage, wherein{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the exhaust gas purification unit includes the oxidation catalyst for exhaust gas purification according to .'} The present invention relates to an oxidation catalyst for exhaust gas purification. More particularly, the present invention relates to an oxidation catalyst suitable for exhaust gas purification in a diesel engine and to a support constituting the catalyst. The present application claims ...

CATALYSTS FOR THE PREPARATION OF METHYLPYRIDINE

Subject of the invention is a dehydrogenation catalyst for dehydrogenating methylpiperidine to methylpyridine. Subject of the invention are also methods for preparing the catalysts obtained thereby and methods, in which the catalysts are used. 1. A process for the production of a catalyst for the dehydrogenation of methylpiperidine to methylpyridine comprising in the order (a) to (d) the steps of(a) providing a carrier comprising 65-100 weight % silicon oxide and 0-35 weight % aluminium oxide,(b) impregnating the carrier with palladium, whereby the carrier is brought into contact with an aqueous solution of a palladium-ammonia-complex to obtain a catalyst,(c) drying the catalyst with air at a temperature below 80° C. and(d) calcinating the catalyst at a temperature below 200° C.2. The process of claim 1 , further comprising after step (d)(e) activating the catalyst with hydrogen.3. The process of claim 1 , wherein the drying step (c) is carried out at a temperature between 20° C. and 60° C.4. The process of claim 1 , wherein the calcinating step (d) is carried out with air and/or at a temperature between 80° C. and 200° C.5. The process of claim 1 , wherein the activating step (e) is carried out under active depletion of oxygen.6. The process of claim 1 , wherein the catalyst comprises 0.5 to 8 weight % palladium.7. A dehydrogenation catalyst for the conversion of methylpiperidine to methylpyridine claim 1 , obtainable by a process of .8. A process for the production of methylpyridine from methylpiperidine claim 7 , wherein methylpiperidine is contacted with a dehydrogenation catalyst according to .9. The process of claim 8 , wherein the methylpiperidine is 3-methylpiperidine.10. The process of claim 8 , wherein the reaction is carried out under a hydrogen and/or nitrogen atmosphere.11. The process of claim 8 , wherein the reaction is carried out in the gaseous phase at a temperature between 180° C. and 400° C.12. The process of claim 8 , wherein the catalyst is ...

Particles Containing One Or More Multi-Layered Dots On Their Surface, Their Use, and Preparation of Such Particles

Described is a product comprising an amount of particles having one or more multi-layered dots on their surface, each multi-layered dot consisting of two or more layers and having an innermost layer contacting the surface of the particle, and an outermost layer, wherein the innermost layer of the multi-layered dots consists of a first metal and the outermost layer of the multi-layered dots consists of a second metal, different from the first metal. 1. A product comprising an amount of particles having one or more multi-layered dots on their surface , each multi-layered dot consisting of two or more layers and having an innermost layer contacting the surface of the particle , and an outermost layer ,wherein the innermost layer of the multi-layered dots consists of a first metal and the outermost layer of the multi-layered dots consists of a second metal, different from the first metal.2. The product according to claim 1 , wherein the particles having one or more multi-layered dots on their surface without consideration of the multi-layered dots have a mean Feret diameter in the range of from 12 to 300 nm.3. The product according to claim 1 , wherein the multi-layered dots have a mean Feret diameter below 10 nm.4. The product according to claim 1 , wherein claim 1 , in processes for depositing metal on the surface of said particles by MOCVD claim 1 , the first metal has a lower tendency to form larger dots than the second metal.5. The product according to claim 1 , wherein the second metal has a higher catalytic activity than the first metal claim 1 , for the reaction of ethane with oxygen to carbondioxide and water.6. The product according to claim 1 , wherein the first metal is palladium.7. The product according to claim 1 , wherein the second metal is platinum.8. The product according to claim 1 , wherein at least 90% of the multi-layered dots having a minimum diameter of 0.1 nm have a diameter in the range of from 0.5 to 4 nm.9. The product according to claim 1 , ...

Method of removing hydrogen peroxide from sulfuric acid

A method of removing hydrogen peroxide from sulfuric acid includes pouring sulfuric acid (HSO) having 0.1% to 10% of hydrogen peroxide (HO) into a vessel; adding a catalyst containing metal or metal compound to the vessel to undergo a reaction with the sulfuric acid (HSO) to remove hydrogen peroxide (HO) from the sulfuric acid (HSO), to generate heat, and to generate metal ions in the sulfuric acid (HSO); activating a cooling device to cool the vessel to a predetermined temperature range; adding sulfur (S) to the vessel to undergo a reaction with the metal ions to generate metallic sulfide; and purifying the metal free sulfuric acid (HSO) to obtain the metallic sulfide and highly purified, diluted sulfuric acid (HSO) as products. 1. A method of removing hydrogen peroxide from sulfuric acid , comprising the steps of:{'sub': 2', '4', '2', '2, '(i) pouring sulfuric acid (HSO) having 0.1% to 10% of hydrogen peroxide (HO) into a vessel;'}{'sub': 2', '4', '2', '2', '2', '4', '2', '4, '(ii) adding a catalyst containing metal or metal compound to the vessel to undergo a reaction with the sulfuric acid (HSO) to remove hydrogen peroxide (HO) from the sulfuric acid (HSO), to generate heat, and to generate metal ions in the sulfuric acid (HSO);'}(iii) activating a cooling device to cool the vessel to a predetermined temperature range;{'sup': '2−', '(iv) adding sulfur (S) to the vessel to undergo a reaction with the metal ions to generate metallic sulfide; and'}{'sub': 2', '4', '2', '4, '(v) purifying the metal free sulfuric acid (HSO) to obtain the metallic sulfide and highly purified, diluted sulfuric acid (HSO) as products.'}2. The method of removing hydrogen peroxide from sulfuric acid of claim 1 , wherein in step (ii) the catalyst is copper (Cu).3. The method of removing hydrogen peroxide from sulfuric acid of claim 1 , wherein in step (ii) the catalyst is copper compound.4. The method of removing hydrogen peroxide from sulfuric acid of claim 1 , wherein in step (ii) the ...

INTEGRATED PROCESS FOR MAKING PROPENE OXIDE AND AN ALKYL TERT-BUTYL ETHER

An integrated process for making propene oxide and an alkyl tert-butyl ether comprises dehydrogenating a feed stream comprising iso-butane to provide a stream comprising iso-butene and hydrogen and separating this stream into a stream consisting essentially of hydrogen and a stream comprising iso-butene; reacting a part or all of the stream comprising iso-butene with an alkanol in the presence of a solid acid catalyst to provide an alkyl tert-butyl ether; reacting a part or all of the stream consisting essentially of hydrogen with oxygen, providing a stream comprising hydrogen peroxide; and reacting a part or all of the stream comprising hydrogen peroxide with propene in the presence of an epoxidation catalyst to provide propene oxide. 19-. (canceled)10. An integrated process for making propene oxide and an alkyl tert-butyl ether , comprising:a) a step of dehydrogenating a feed stream S1 comprising iso-butane, to provide a stream, S2, comprising iso-butene and hydrogen;b) a separation step separating stream S2 into a stream, S3, consisting essentially of hydrogen and a stream, S4, comprising iso-butene;c) a step of reacting a part or all of stream S4 with an alkanol in the presence of a solid acid catalyst, to provide a stream, S5, comprising an alkyl tert-butyl ether;d) a separation step separating the alkyl tert-butyl ether from stream S5;e) a step of reacting a part or all of stream S3 with oxygen, to provide a stream, S6, comprising hydrogen peroxide;f) a step of reacting a part or all of stream S6 with propene in the presence of an epoxidation catalyst, to provide a stream, S7, comprising propene oxide; andg) a separation step separating propene oxide from stream S7.11. The process of claim 10 , wherein the alkanol is methanol.12. The process of claim 10 , wherein a stream claim 10 , S8 claim 10 , comprising unreacted iso-butane is separated in step d) claim 10 , a stream S9 comprising more than 80% by weight iso-butane is separated from stream S8 and stream S9 ...

INTEGRATED PROCESS FOR MAKING PROPENE OXIDE AND AN ALKYL TERT-BUTYL ETHER

An integrated process for making propene oxide and an alkyl tert-butyl ether comprises dehydrogenating a feed stream comprising propane and iso-butane to provide a stream comprising propene, iso-butene and hydrogen; separating this stream into a stream consisting essentially of hydrogen and a stream comprising propene and iso-butene; separating the stream comprising propene and iso-butene into a stream comprising propene and a stream comprising iso-butene; reacting a part or all of the stream comprising iso-butene with an alkanol in the presence of a solid acid catalyst to provide an alkyl tert-butyl ether; and reacting a part or all of the stream comprising propene with hydrogen peroxide in the presence of an epoxidation catalyst to provide propene oxide. 110-. (canceled)11. An integrated process for making propene oxide and an alkyl tert-butyl ether comprising;{'b': 1', '2, 'a) a step of dehydrogenating a feed stream, S, comprising propane and iso-butane, to provide a stream, S, comprising propene, iso-butene and hydrogen;'}{'b': 2', '3', '4, 'b) a separation step separating stream S into a stream, S, consisting essentially of hydrogen and a stream, S, comprising propene and iso-butene;'}{'b': 4', '5', '6, 'c) a separation step separating stream S into a stream, S, comprising propene and a stream, S, comprising iso-butene;'}{'b': 5', '7, 'd) a step of reacting a part or all of stream S with hydrogen peroxide in the presence of an epoxidation catalyst to provide a stream, S, comprising propene oxide;'}{'b': '7', 'e) a separation step separating propene oxide from stream S;'}{'b': 6', '8, 'f) a step of reacting a part or all of stream S with an alkanol in the presence of a solid acid catalyst, to provide a stream, S, comprising an alkyl tert-butyl ether; and'}{'b': '8', 'g) a separation step separating the alkyl tert-butyl ether from stream S.'}12. The process of claim 11 , wherein the alkanol is methanol.13595. The process of claim 11 , wherein unreacted propane is ...

COMPOSITIONS OF NANOPARTICLES ON SOLID SURFACES

A method for producing nanoparticles on a substrate using a metal precursor in an ionic liquid and microwave heating is described. The composite compositions are useful as catalysts for chemical reactions, fuel cell, supercapacitor and battery components, and the like. 110.-. (canceled)11. A composite composition which comprises a substrate having nanoparticles of a metal deposited thereon , wherein:(i) the substrate comprises one or more of graphite particles, carbon nanotubes, carbon fibers, and carbon buckyballs;(ii) the substrate has a nanoparticulate structure with at least one dimension that is less than 100 nanometers; and(iii) the deposited metal nanoparticles range in size between 0.5 nm and 3.5 nm.12. The composition of wherein the nanoparticles of the metal are comprised of a noble metal alone or in combination with a transition metal.13. The composition of wherein the nanoparticles of the metal comprise a metal alone or in combination with another metal.14. The composition of wherein the deposited metal nanoparticles have a median size between 1.3 nm and 2.5 nm.15. The composition of wherein the substrate comprises exfoliated graphite nanoplatelets.16. (canceled)17. The composition of wherein the nanoparticles have been formed on the substrate by microwave irradiation of a precursor to the metal in a solution of an ionic liquid in a reducing liquid solvent.18. The composition of wherein the metal is selected from the group consisting of platinum claim 11 , ruthenium claim 11 , nickel claim 11 , iron claim 11 , silver claim 11 , gold claim 11 , palladium claim 11 , cobalt claim 11 , tin claim 11 , tungsten claim 11 , chromium claim 11 , molybdenum claim 11 , and combinations thereof.19. A composite composition which comprises a substrate having nanoparticles of a metal deposited thereon claim 11 , wherein:(i) the substrate comprises graphite particles; and(ii) the substrate has a nanoparticulate structure with at least one dimension that is less than 100 ...

EXHAUST GAS CLEANING CATALYST

The exhaust gas cleaning catalyst according is provided with a substrate and a catalyst coat layer formed on a surface of the substrate. The catalyst coat layer is formed as a laminate structure having an upper layer and a lower layer. The upper layer is a Pd-free layer that does not contain Pd, and the lower layer is a Pd-containing layer. In addition, when a region of the lower layer that corresponds to 20% of the length of the exhaust gas cleaning catalyst from the exhaust gas inlet side end towards the exhaust gas outlet side of the exhaust gas cleaning catalyst is divided into four equal regions to be each 5% of the length, the relationship A>B>C is satisfied, where A, B, and C represents the Pd content in the first, second, and third region respectively. 1. An exhaust gas cleaning catalyst disposed in an exhaust pathway of an internal combustion engine and cleaning exhaust gas emitted by the internal combustion engine , whereinthe exhaust gas cleaning catalyst is provided with a substrate and a catalyst coat layer formed on a surface of the substrate,the catalyst coat layer is formed as a multilayer structure having an upper layer and a lower layer, with a layer nearer to the surface of the substrate being the lower layer and a layer further from the surface of the substrate being the upper layer,the upper layer is a Pd-free layer which does not contain Pd,the lower layer is a Pd-containing layer which contains Pd, andwhen a region of the lower layer that corresponds to 20% of the length of the exhaust gas cleaning catalyst from an exhaust gas inlet side end towards an exhaust gas outlet side of the exhaust gas cleaning catalyst is divided into four equal regions to be each 5% of the length, a relationship A>B>C is satisfied,where A represents the content of Pd in a first region that is a quarter at the most upstream side, B represents the content of Pd in a second region that is a quarter at the downstream side adjacent to the first region, and C represents ...

Plant for hydrogen peroxide production and process using it

A plant for producing hydrogen peroxide by an autoxidation process (AO-process) comprising hydrogenating an anthraquinone in a working solution, oxidizing the hydrogenated anthraquinone with oxygen to form hydrogen peroxide and extracting the hydrogen peroxide from the working solution, the plant comprising at least one skid mounted module selected from the group consisting of a skid mounted module comprising at least one hydrogenator (hydrogenation reactor) to hydrogenate the anthraquinone in the working solution (hydrogenation skid 1); a skid mounted module comprising at least one oxidizer (oxidation reactor) to oxidize the hydrogenated anthraquinone with oxygen to form hydrogen peroxide (oxidizer skid 2); optionally a skid mounted module comprising at least one means to compress air (process air compressor skid 3), to feed oxygen, in particular oxygen from the air, into an oxidizer of skid 2, and in case of presence of skid 3 a further skid mounted module comprising at least one means to recover the solvent (solvent recovery unit skid 4), in particular if oxygen from the air is used to feed oxygen into an oxidizer of skid 2; a skid mounted module comprising at least one means to extract the hydrogen peroxide from the working solution (extraction skid 5); a skid mounted module (skid 6), comprising at least one means to deliver hydrogen peroxide solution to the point of use and/or optionally to a storage tank optionally with additional means for adjusting the hydrogen peroxide concentration. Preferably the plant is a modular reactor system which is configured to operate without a reversion unit as a small-to-medium scale mini-AO process plant with a production capacity of hydrogen peroxide of up to 20 kilo tons per year and which can be controlled also remotely.

Microwave absorbing carbon-metal oxides and modes of using, including water disinfection

Microwave absorbing materials are provided herein. Disclosed microwave absorbing materials include those comprising metal oxide nanocrystals hybridized to a carbon nanomaterial. Methods for making and using microwave absorbing materials are also disclosed, such as for generation of reactive oxygen species and disinfection of water.

HYDROGEN PEROXIDE COMPOSITION AND METHOD FOR PRODUCING CHLORINE DIOXIDE

The use of a single phase aqueous hydrogen peroxide composition, comprising from 5 to 75% by weight of hydrogen peroxide and from 3 to 150 mg/kg of at least one alkyl phosphate, the composition having a total organic carbon content from organic compounds other than alkyl phosphates of less than 200 mg/kg, reduces foam formation in a method for producing chlorine dioxide by reacting an alkali chlorate with hydrogen peroxide composition in an acidic aqueous medium boiling at sub-atmospheric pressure. 1. A single phase aqueous hydrogen peroxide composition for producing chlorine dioxide , comprisingfrom 5 to 75% by weight of hydrogen peroxide, andfrom 3 to 150 mg/kg of at least one alkyl phosphate;the composition having a total organic carbon content from organic compounds other than said alkyl phosphates of less than 200 mg/kg.2. The aqueous hydrogen peroxide composition of claim 1 , prepared by subjecting an aqueous hydrogen peroxide solution to reverse osmosis to provide a permeate with a total organic carbon content of less than 200 mg/kg claim 1 , and adding at least one alkyl phosphate to said permeate.3. The aqueous hydrogen peroxide composition of claim 1 , wherein the alkyl phosphates comprise alkyl groups containing from 3 to 10 carbon atoms.4. The aqueous hydrogen peroxide composition of claim 1 , wherein at least 90% by weight of said alkyl phosphates are selected from tri-n-butyl phosphate and tri-iso-butyl phosphate.5. The aqueous hydrogen peroxide composition of claim 4 , comprising from 25 to 75% by weight of hydrogen peroxide and from 10 to 90 mg/kg tri-n-butyl phosphate.6. The aqueous hydrogen peroxide composition of claim 4 , comprising from 25 to 75% by weight of hydrogen peroxide and from 10 to 90 mg/kg tri-iso-butyl phosphate.7. The aqueous hydrogen peroxide composition of claim 1 , further comprising at least one tin-containing peroxide stabilizer in an amount of from 1 to 20 mg/I tin.8. The aqueous hydrogen peroxide composition of claim 7 , ...

PROCESS FOR MANUFACTURING AN AQUEOUS HYDROGEN PEROXIDE SOLUTION

Process for manufacturing an aqueous hydrogen peroxide solution comprising the following steps: —hydrogenating a working solution which comprises an alkylanthraquinone and/or tetrahydroalkylanthraquinone and a mixture of a non-polar organic solvent and a polar organic solvent wherein the concentration of non-polar organic solvent in said mixture is equal to or higher than 30 wt %; —oxidizing the hydrogenated working solution to produce hydrogen peroxide; and —isolating the hydrogen peroxide, wherein the polar organic solvent is a substituted cyclohexane carbonitrile. 114-. (canceled)15. A process for manufacturing an aqueous hydrogen peroxide solution comprising the following steps:hydrogenating a working solution which comprises an alkylanthraquinone and/or tetrahydroalkylanthraquinone and a mixture of a non-polar organic solvent and a polar organic solvent wherein the concentration of non-polar organic solvent in said mixture is equal to or higher than 30 wt %; isolating the hydrogen peroxide,', 'wherein the polar organic solvent is a substituted cyclohexane carbonitrile., 'oxidizing the hydrogenated working solution to produce hydrogen peroxide; and'}16. The process according to claim 15 , wherein the process is a continuous process and wherein the working solution is circulated in a loop through the hydrogenation claim 15 , oxidation and purification steps.17. The process according to claim 15 , wherein the alkylanthraquinone is chosen from the group consisting of ethylanthraquinones like 2-ethylanthraquinone (EQ) claim 15 , 2-isopropylanthraquinone claim 15 , 2-sec- and 2-tert-butylanthraquinone (BQ) claim 15 , 1 claim 15 ,3- claim 15 , 2 claim 15 ,3- claim 15 , 1 claim 15 ,4- and 2 claim 15 ,7-dimethylanthraquinone claim 15 , amylanthraquinones (AQ) like 2-iso- and 2-tert-amylanthraquinone and mixtures of these quinones.18. The process according to claim 17 , wherein the quinone is EQ claim 17 , BQ or AQ claim 17 , preferably EQ.19. The process according to ...

Palladium-containing composition and hydrogen peroxide production method

It is desired to develop a method of producing hydrogen peroxide, which is capable of producing hydrogen peroxide with high production efficiency. According to the present invention, provided is a palladium-containing composition comprising palladium particles and a coating agent that coats the surface of the palladium particles, wherein a compound having an O═X structure (wherein X represents any of a phosphorus atom, a sulfur atom, and a carbon atom) is comprised as the coating agent.

METHOD AND DEVICE FOR CONVERSION OF WATER INTO HYDROGEN PEROXIDE

In a method and device for conversion of water into hydrogen peroxide (HO), a corona discharge zone is generated between a first electrode () and a second electrode () one of which is insulated and another of which is not insulated and wherein a respective surface of each of the electrodes face one another. The first electrode () is rotated so as to induce relative rotation between the first electrode and the second electrode; and liquid water is conveyed on to a surface of the first electrode facing the second electrode close to the axis of rotation () of the first electrode whereby the liquid water advances outward through the corona discharge zone towards a periphery of the first electrode under the action of centrifugal force caused by rotation of the first electrode. 1. A method for conversion of water into hydrogen peroxide (HO) , the method comprising:generating a corona discharge zone between a first electrode and a second electrode one of which is insulated and another of which is not insulated and wherein a respective surface of each of the electrodes face one another;rotating the first electrode so as to induce relative rotation between the first electrode and the second electrode; andconveying liquid water on to a surface of the first electrode facing the second electrode close to the axis of rotation of the first electrode whereby the liquid water advances outward through the corona discharge zone towards a periphery of the first electrode under the action of centrifugal force caused by rotation of the first electrode.2. The method according to claim 1 , wherein removal of HOfrom the surface of the first electrode is accomplished through atomization of HOfrom the edges thereof.3. The method according to claim 2 , wherein HOis atomized outside the corona discharge zone.4. The method according to claim 1 , including cooling the electrodes using cooling liquid supplied to the respective surfaces of the electrodes not facing each other.5. The method ...

Method for producing hydrogen peroxide, kit for hydrogen peroxide production, organic polymer photocatalyst used in said method and kit, and method for producing said organic polymer photocatalyst

The present invention provides a hydrogen peroxide production method and a hydrogen peroxide production kit that are capable of producing hydrogen peroxide more efficiently and at lower costs than conventional methods. Specifically, the present invention provides a hydrogen peroxide production method comprising: (1) a hydrogen peroxide generation step of generating hydrogen peroxide by irradiating a reaction system containing water, an organic polymer photocatalyst, and O 2 with light, wherein (2) the organic polymer photocatalyst comprises an organic polymer having a structure such that a monocyclic or polycyclic aromatic compound and/or a monocyclic or polycyclic heteroaromatic compound is/are linked by a bridging group, and (3) the organic polymer has a band structure such that a conduction band (CB) has a potential lower than the potential of two-electron reduction of O 2 , and a valance band (VB) has a potential higher than the potential of four-electron oxidation of water.

EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING THE SAME

In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region () containing palladium and yttrium on a three-dimensional structure (), and a first region () and a second region () provided on the region () in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of yttrium contained in the first region () and/or the second region () is higher than the concentration of yttrium contained in the region (). 1. An exhaust gas purification catalyst comprising:a region containing palladium and yttrium, the region being provided on a three-dimensional structure; anda first region and a second region being provided on the region containing palladium and yttrium in order from an inflow side of exhaust gas to an outflow side of exhaust gas, whereinthe concentration of yttrium contained in either the first region and/or the second region is higher than the concentration of yttrium contained in the region containing palladium and yttrium.2. The exhaust gas purification catalyst according to claim 1 , wherein the concentration of yttrium contained in the second region is from 2 mass % to 15 mass % in terms of YO claim 1 , and{'sub': 2', '3, 'the concentration of yttrium contained in the region containing palladium and yttrium is from 0.01 mass % to 0.9 mass % in terms of YO.'}3. The exhaust gas purification catalyst according to or claim 1 , wherein the amount of yttrium contained in the second region is larger than the amount of yttrium contained in the first region.4. The exhaust gas purification catalyst according to any one of to claim 1 , wherein the amount of yttrium contained in the second region is from 2.1 g/L to 10 g/L in terms of YOrelative to 1 liter of the three-dimensional structure claim 1 , and{'sub': 2', '3, 'the amount of yttrium ...

NANOCATALYST WITH MESOPOROUS SHELL FOR HYDROGEN PEROXIDE PRODUCTION AND METHODFOR HYDROGEN PEROXIDE PRODUCTION USING THE SAME

Disclosed is a core-shell structured nanocatalyst for hydrogen peroxide production. The core-shell structured nanocatalyst includes a core composed of spherical silica immobilized with noble metal nanoparticles and a mesoporous shell surrounding the core. The use of the nanocatalyst with a mesoporous shell for the production of hydrogen peroxide from hydrogen and oxygen ensures high hydrogen conversion and hydrogen peroxide production rate compared to the use of conventional nanoparticle catalysts with a microporous shell. Also disclosed is a method for hydrogen peroxide production using the nanocatalyst. 1. A core-shell nanoparticle catalyst for hydrogen peroxide production comprising a silica nanoparticle core immobilized with noble metal nanoparticles and a mesoporous shell.2. The core-shell nanoparticle catalyst according to claim 1 , wherein the noble metal is selected from palladium (Pd) claim 1 , gold claim 1 , (Au) claim 1 , platinum (Pt) claim 1 , and alloys thereof.3. The core-shell nanoparticle catalyst according to claim 1 , wherein the noble metal nanoparticles have a size of 1 to 30 nm.4. The core-shell nanoparticle catalyst according to claim 1 , wherein the core-shell nanoparticles are supported on silica (SiO) claim 1 , titania (TiO) claim 1 , alumina (AlO) claim 1 , zirconia (ZrO) claim 1 , carbon (C) claim 1 , and composites thereof.5. The core-shell nanoparticle catalyst according to claim 1 , wherein the mesoporous shell has a thickness of 5 to 40 nm.6. A method for preparing a core-shell nanoparticle catalyst for hydrogen peroxide production claim 1 , the method comprising (1) preparing noble metal nanoparticles claim 1 , (2) immobilizing the noble metal nanoparticles on silica claim 1 , and (3) coating a mesoporous shell on the silica immobilized with the noble metal nanoparticles.7. A method for hydrogen peroxide production comprising feeding hydrogen and oxygen to a reactor where the hydrogen reacts with the oxygen in the presence of the ...

COMPOSITION, COMPOSITION RESERVOIR, AND METHOD FOR PRODUCING COMPOSITION

An object of the present invention is to provide a composition including hydrogen peroxide, which can be used for semiconductor device manufacturing and which exhibits an excellent storage stability and has a reduced effect of defects on a semiconductor substrate. Further, another object of the present invention is to provide a method for producing the composition including hydrogen peroxide, and a composition reservoir for storing the composition. 1. A composition , comprising:hydrogen peroxide;an acid; anda Fe component,{'sup': −5', '2, 'wherein the content of the Fe component is 10to 10in terms of mass ratio with respect to the content of the acid.'}2. The composition according to claim 1 , further comprising:an anthraquinone compound.3. The composition according to claim 1 , wherein the content of the anthraquinone compound is 0.01 ppb by mass to 1000 ppb by mass with respect to the total mass of the composition.4. The composition according to claim 1 , wherein the content of the acid is 0.01 ppb by mass to 1000 ppb by mass with respect to the total mass of the composition.5. The composition according to claim 1 , wherein the total content of the Fe component is 0.1 ppt by mass to 1 ppb by mass with respect to the total mass of the composition.6. The composition according to claim 1 , wherein the content of Fe particles contained in the Fe component is 0.01 ppt by mass to 0.1 ppb by mass with respect to the total mass of the composition.7. The composition according to claim 1 , further comprising:at least one or more metal components containing a specific atom selected from the group consisting of Ni, Pt, Pd, Cr, Ti, and Al,wherein the content of the metal component is 0.01 ppt by mass to 10 ppb by mass with respect to the total mass of the composition for each specific atom.8. The composition according to claim 1 , further comprising:at least one or more metal components containing a specific atom selected from the group consisting of Ni, Pt, Pd, and Al,wherein ...

PROCESS TO OBTAIN HYDROGEN PEROXIDE, AND CATALYST AND CATALYSTS SUPPORTS FOR SAID PROCESS

Catalyst support comprising a material functionalized with at least one acid group and at least one linear hydrophobic group. Catalyst comprising said support and process for the direct synthesis of hydrogen peroxide using said catalyst. 1. A catalyst support , comprising a support material having a surface , at least one acid group grafted on the surface , and at least one linear hydrophobic group grafted on the surface , wherein each of the at least one acid group and at least one linear hydrophobic group is part of a respective silane molecule , each of the respective silane molecules comprises a Si atom and four substituents per such Si atom , 3 of the four substituents are covalently bonded to the surface of the support material , the fourth of the four substituents of a respective one of the silane molecules is an organic substituent which comprises the at least one acid group , and the fourth of the four substituents of another of the respective the silane molecules is the at least one linear hydrophobic group.2. The catalyst support according to claim 1 , wherein the acid group is selected from the group consisting of sulfonic claim 1 , phosphonic claim 1 , carboxylic claim 1 , and dicarboxylic acid groups.3. The catalyst support according to claim 2 , wherein the acid group is p-toluene sulfonic acid.4. The catalyst support according to claim 1 , wherein the linear hydrophobic group is an alkane having from 1 to 20 carbon atoms.5. The catalyst support according to claim 1 , wherein the catalyst support further comprises a halogenated group grafted to the surface of the support material claim 1 , wherein the halogenated group is part of a silane molecule claim 1 , that comprises a Si atom having four substituents per such Si atom claim 1 , 3 of such substituents are covalently bonded to surface of the support material claim 1 , and the fourth of such substituents is the halogenated group.6. The catalyst support according to claim 1 , wherein the respective ...

Process to obtain hydrogen peroxide, and catalyst supports for the same process

A catalyst support comprising a material functionalized with at least one acid group and at least one halogen atom; and a supported catalyst comprising (i) a catalyst and (ii) the catalyst support comprising the functionalized material, as well as their uses in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of the supported catalyst comprising the functionalized material, optionally with the addition of an inert gas, in a reactor. 1. A catalyst support comprising a material functionalized with at least one acid group and at least one halogen atom.2. The catalyst support according to claim 1 , wherein said material comprises an organic resin.3. The catalyst support according to claim 2 , wherein said organic resin is selected from the group consisting of olefin polymers claim 2 , their copolymers with divinylbenzene claim 2 , and mixtures thereof.4. The catalyst support according to claim 1 , comprising an inorganic solid.5. The catalyst support according to claim 4 , wherein said inorganic solid has a specific surface area greater than 20 m/g.6. The catalyst support according to claim 4 , wherein said inorganic solid has a pore volume of from 0.1 mL/g to 3 mL/g.7. The catalyst support according to claim 4 , wherein said inorganic solid comprises oxides of elements of groups 2-14 of the Periodic Table.8. The catalyst support according to claim 7 , wherein said inorganic solid comprises SiO.9. The catalyst support according to claim 1 , wherein said at least one acid group is sulfonic acid claim 1 , phosphonic acid claim 1 , carboxylic acid claim 1 , dicarboxylic acid claim 1 , or a mixture thereof.10. The catalyst support according to claim 1 , wherein said at least one halogen atom is fluoride claim 1 , chloride claim 1 , bromide claim 1 , iodide claim 1 , or a mixture thereof.11. A supported catalyst comprising (i) a catalyst and (ii) the catalyst support according to .12. The ...

POROUS CATALYST WASHCOATS

Catalyst washcoats with improved porosity and methods for making the washcoats are provided. The process comprises incorporation of an oil-in-water macroemulsion into the catalyst slurry prior to washcoating the carrier substrate, and calcining the washcoated carrier substrate to remove the oil-in-water macroemulsion. Also provided are catalyst articles comprising the washcoat and methods for abatement of exhaust gas emissions. 1. A catalyst article comprising a catalyst washcoat on a carrier substrate , wherein about 30%-100% of pores within the catalyst washcoat are about 15 μm-100 μm in size in at least one dimension.2. The catalyst article of claim 1 , wherein about 70%-100% of the pores within the catalyst washcoat are about 15 μm-100 μm in size in at least one dimension.3. The catalyst article of claim 1 , wherein about 70%-100% of the pores within the catalyst washcoat are about 15 μm-50 μm in size in at least one dimension.4. The catalyst article of claim 1 , wherein the carrier substrate is cordierite or metal.5. The catalyst article of claim 1 , wherein the catalyst washcoat comprises a precious group metal catalyst and/or a base metal catalyst.6. The catalyst article of claim 5 , wherein the precious group metal catalyst and/or base metal catalyst is impregnated on a support material.716-. (canceled)17. A system for abatement of exhaust gas emissions comprising a source of exhaust gases in fluid flow communication with a catalyst article according to claim 1 , and at least one of a soot filter claim 1 , a catalyzed soot filter and a second catalyst article in fluid flow communication with the catalyst article.18. The system of claim 17 , wherein the carrier substrate is a ceramic or metal honeycomb substrate.19. The system of claim 18 , wherein the carrier substrate is a flow-through monolithic substrate or a wall flow substrate. The invention relates to the field of catalyst washcoats and methods of making catalyst washcoats. The invention also relates ...

HYROGEN PEROXIDE PURIFICATION PROCESS AND HYROGEN PEROXIDE

A hydrogen peroxide purification process, including supplying a starting stream containing hydrogen peroxide at a content above 50 wt %, as well as at least one stabilizer; a single step of purification of the starting stream, the single step having purification by reverse osmosis; collecting a purified stream at the end of said single purification step, in which purification by reverse osmosis includes: passing the starting stream over a first membrane; collecting a permeate and a retentate from the first membrane; passing the permeate from the first membrane over a second membrane; collecting a permeate and a retentate from the second membrane, the purified stream having the permeate from the second membrane. 2. The process as claimed in claim 1 , in which the starting stream is prepared by a process comprising passage over adsorption resin.3. The process as claimed in claim 1 , in which the starting stream contains at least 55 wt % of hydrogen peroxide.4. The process as claimed in claim 1 , in which the stabilizer is selected from phosphate or pyrophosphate salts claim 1 , tin salts claim 1 , organophosphorus compounds and phosphonates claim 1 , carboxylic acids claim 1 , borates claim 1 , nitrates and combinations of the latter.5. The process as claimed in claim 1 , in which purification by reverse osmosis comprises:passing the starting stream over a single membrane;collecting a permeate and a retentate from the membrane, the purified stream consisting of the permeate.6. The process as claimed in claim 1 , in which purification by reverse osmosis is carried out on a membrane of the polyamide claim 1 , polypiperazine claim 1 , polyacrylonitrile or polysulfone type.7. The process as claimed in claim 1 , in which the purified stream contains:less than 100 mg/kg of total organic carbon;less than 5 mg/kg of phosphorus;less than 0.04 mg/kg of iron; andless than 0.1 mg/kg of the sum of chromium and nickel.8. The process as claimed in claim 1 , in which purification of ...

Immiscible composite catalyst for synthesis of hydrogen peroxide and methods for synthesizing of hydrogen peroxide using the same

A catalyst for synthesizing hydrogen peroxide is provided. The catalyst includes first material capable of dissociating hydrogen molecules; and second material capable of suppressing dissociation of oxygen molecules, where one or more interfaces are formed between the first material and the second material. The catalyst can be used as an alternative to the expensive palladium catalysts. In particular, the catalyst can be used for the direct synthesis of hydrogen peroxide.

PROCESS FOR MANUFACTURING AN AQUEOUS HYDROGEN PEROXIDE SOLUTION

A process for manufacturing an aqueous hydrogen peroxide solution comprising the following steps:—hydrogenating a working solution which comprises an alkylanthraquinone and/or tetrahydroalkylanthraquinone and a mixture of a non-polar organic solvent and a polar organic solvent;—oxidizing the hydrogenated working solution to produce hydrogen peroxide; and—isolating the hydrogen peroxide, wherein the polar organic solvent is 5-methyl-2-isopropylcyclohexanecarbonitrile (C11F). 114.-. (canceled)15. A process for manufacturing an aqueous hydrogen peroxide solution comprising the following steps:hydrogenating a working solution which comprises an alkylanthraquinone and/or tetrahydroalkylanthraquinone and a mixture of a non-polar organic solvent and a polar organic solvent;oxidizing the hydrogenated working solution to produce hydrogen peroxide; andisolating the hydrogen peroxide, wherein the polar organic solvent is 5-methyl-2-isopropylcyclohexanecarbonitrile (C11F).16. The process according to claim 15 , said process having a production capacity of hydrogen peroxide of up to 100 kilo tons per year.17. The process according to claim 15 , said process being operated in a plant located at an industrial end user site.18. The process according to claim 15 , wherein the C11F has been obtained by reaction of menthol with mesyl or tosyl chloride followed by cyanation.191. The process according to claim 15 , wherein the C11F has been obtained by reaction of menthol with phosphorus tribromide (PBr3) claim 15 , phosphorus trichloride (PCl3) claim 15 , phosphorus triiodide (PI3) claim 15 , potassium iodide (KI) with acid catalysis claim 15 , thionyl chloride (SOC2) or thionyl bromide (SOBr2) claim 15 , followed by cyanation.20. The process according to claim 15 , wherein the C11F has been obtained by an esterification reaction of menthol with an anhydride claim 15 , an acid or an acyl chloride said anhydride claim 15 , acid or acyl chloride bearing a trifluoromethyl group claim 15 , ...

METHOD FOR PRODUCING HYDROGEN PEROXIDE

An object of the present invention is to provide a method by which hydrogen peroxide can be produced at a satisfactory level from an industrial and economical viewpoint without causing the load of purification to be large and without needing too large facilities for production. The present invention is directed to a method for producing hydrogen peroxide, which comprises reacting hydrogen and oxygen in a reaction medium in the presence of a noble metal catalyst and a radical scavenger. 1. A method for producing hydrogen peroxide , comprising reacting hydrogen and oxygen in a reaction medium in the presence of a noble metal catalyst and a radical scavenger.2. The method according to claim 1 , wherein the radical scavenger is a nitrone compound claim 1 , a nitroso compound claim 1 , a dithiocarbamate derivative claim 1 , or an ascorbic acid derivative.4. The method according to claim 3 , wherein claim 3 , in formula (1) claim 3 , Rand Rare methyl groups claim 3 , and Rand Rare each independently a methyl group claim 3 , hydrogen claim 3 , a 2-oxo-1-pyridylmethyl group claim 3 , or an amino group claim 3 ,{'sub': 5', '6', '10, 'in formula (2), Ris a methyl group, an ethyl group, an isopropyl group, a n-propyl group, a cyclopropyl group, a n-butyl group, a sec-butyl group, a tert-butyl group, or a cyclobutyl group, and Rto Rare hydrogen,'}{'sub': 11', '12', '15, 'in formula (3), Ris a tert-butyl group, and Rto Rare hydrogen,'}{'sub': '16', 'in formula (4), Ris a tert-butyl group, a 3,5-dibromo- 1-sulfophenyl group, or a 2,3,5,6-tetramethylphenyl group; and'}{'sub': 17', '18, 'in formula (5), each of Rand Ris independently a methyl group, an ethyl group, or a carboxymethyl group, and X′ is a sodium ion.'}5. The method according to claim 1 , wherein the radical scavenger is 5 claim 1 ,5-dimethyl-1-pyrroline N-oxide or N-tert-butyl-α-phenylnitrone.6. The method according to claim 1 , wherein an amount of the radical scavenger is from 0.01 to 0.05 part by weight claim 1 , ...

DEVICE, SYSTEM, AND METHOD FOR PRODUCING ADVANCED OXIDATION PRODUCTS

The present invention relates generally to an advanced oxidation process for providing advanced oxidation products to an environment. More particularly, the present invention provides a device, system, and method utilizing an advanced oxidation process to react with and neutralize compounds in an environment, including microbes, odor causing chemicals, and other organic and inorganic chemicals. The device, system, and method of the present invention employ a wick structure to collect and concentrate water vapor, so that the water vapor may subsequently be used to generate advanced oxidation products. 1. An apparatus for generating advanced oxidation products comprising:a wick structure comprising a porous base material and having an interior surface and an exterior surface;at least one high frequency ultrasonic emitter targeted to the interior surface of the wick structure;a light source; anda chamber wherein the formation of advanced oxidation products occurs disposed adjacent to the interior surface of the wick structure.2. The apparatus for generating advanced oxidation products of claim 1 , further comprising a gas inlet configured to flow gas along at least one of the interior surface and the exterior surface of the wick structure.3. The apparatus for generating advanced oxidation products of claim 2 , wherein the gas is air.4. The apparatus for generating advanced oxidation products of claim 1 , wherein ultra-sonic energy produced by the ultrasonic emitter is targeted to the interior surface of the wick structure by one or more digital reflectors.5. The apparatus for generating advanced oxidation products of claim 4 , wherein the one or more digital reflectors are planar or conical in structure.6. The apparatus for generating advanced oxidation products of claim 4 , wherein the digital reflectors comprise a plurality of planar convex reflectors that are configured to reflect and disperse the ultrasonic energy onto targeted points or surfaces of the interior ...

METHOD OF PREPARING CATALYST HAVING Pt-Pd DISPERSED POLYMER ELECTROLYTE MULTILAYERS TREATED WITH SULFURIC ACID

Disclosed herein is a method of preparing a catalyst having Pt—Pd dispersed in polymer electrolyte multilayers, suitable for use in production of hydrogen peroxide, wherein the use of the catalyst prepared by forming polymer electrolyte multilayers on an anionic resin support and performing sulfuric acid treatment and loading (insertion or attachment) of Pt—Pd particles can result in high hydrogen conversion, hydrogen selectivity and hydrogen peroxide yield for a long period of time.

CATALYTIC WATER TREATMENT WITH IN-SITU PRODUCTION OF HYDROGEN PEROXIDE

This application relates to a water treatment process. The process comprises contacting contaminated water with a catalyst, introducing hydrogen and an oxygen-containing gas into the contaminated water, and reacting hydrogen and oxygen in the presence of the catalyst and the contaminated water. 1. A water treatment process comprising:contacting contaminated water with a catalyst,introducing hydrogen and an oxygen-containing gas into the contaminated water, andreacting hydrogen and oxygen in the presence of the catalyst and the contaminated water.2. A process as claimed in claim 1 , wherein the reaction of hydrogen and oxygen in the presence of the catalyst and contaminated water generates radical species that react with contaminants in the water.3. A process as claimed in claim 2 , wherein the radical species include hydrogen radicals.4. A process as claimed in any one of the preceding claims claim 2 , wherein catalyst comprises a transition metal is selected from at least one of palladium claim 2 , gold and platinum.5. A process as claim 4 , wherein the catalyst comprises palladium and gold or palladium and tin.6. A process as claimed in any one of the preceding claims claim 4 , wherein the catalyst is supported on a particulate support.76. A process as claimed in claim 4 , wherein the support is an oxide support.8. A process as claimed in any one of the preceding claims claim 4 , wherein the hydrogen and/or oxygen-containing gas are introduced into the contaminated water at a pressure of 0.1 to 1 MPa.9. A process as claimed in any one of the preceding claims claim 4 , wherein the oxygen-containing gas is selected from oxygen and air.10. A process as claimed in any one of the preceding claims claim 4 , wherein the hydrogen and/or oxygen is produced by electrolysis upstream of the reactor.11. A process as claimed in any one of the preceding claims claim 4 , wherein the contaminated water is introduced into a reactor containing the catalyst claim 4 , and hydrogen and ...

Catalyst for H202 synthesis and method for preparing such catalyst

A catalyst comprising at least one catalytically active metal selected from the group consisting of elements of Groups 7 to 11, wherein the catalytically active metal is supported on a support material being grafted with acid groups other than OH groups, wherein a metal is in the bulk of the support material, and wherein the catalytically active metal is different from the metal of the support material. A method for preparing such catalyst and the use of such catalyst for catalyzing reactions. 1. A catalyst comprising at least one catalytically active metal selected from the group consisting of elements of Groups 7 to 11 , wherein the catalytically active metal is supported on a support material being grafted with acid groups other than OH groups , wherein a metal is in the bulk of said support material , wherein the catalytically active metal is different from the metal of the support material , wherein in said catalyst when fresh , between 1% and 70% of the catalytically active metal , based on the total amount of the catalytically active metal present , is present in reduced form as determined by XPS.2. The catalyst according to claim 1 , wherein the catalytically active metal is selected from the group consisting of palladium claim 1 , platinum claim 1 , silver claim 1 , gold claim 1 , rhodium claim 1 , iridium claim 1 , ruthenium claim 1 , osmium claim 1 , and combinations thereof.3. The catalyst according to claim 2 , wherein the catalytically active metal is palladium or a combination of palladium with another metal.4. The catalyst according to claim 1 , wherein in said catalyst when fresh claim 1 , between 10% and 40% of the catalytically active metal claim 1 , based on the total amount of the catalytically active metal present claim 1 , is present in reduced form.5. The catalyst according to claim 1 , wherein the amount of the catalytically active metal is from 0.001% to 10% by weight calculated as catalytically active metal in reduced form and based on the ...

A CATALYST FOR DIRECT SYNTHESIS OF HYDROGEN PEROXIDE, ITS PREPARATION AND USE

A catalyst comprising a platinum group metal (group 10) supported on a carrier, said carrier comprising a silica core and a precipitate layer of comprising a metal oxide, sulfate or phosphate on said core; said catalyst also comprising a rhodium group metal (group 9) supported on said carrier. 1. A catalyst comprising an amount of Pd supported on a carrier , said carrier comprising a silica core and a precipitate layer comprising a metal oxide , sulfate or phosphate on said core; said catalyst further comprising Rh supported on said carrier in an amount of from 1% to 50% of the amount of Pd.2. The catalyst according to claim 1 , wherein the metal oxide is selected from the group consisting of Zr oxides claim 1 , Nb oxides claim 1 , Ta oxides claim 1 , Nb phosphate claim 1 , and BaSO4.3. The catalyst according to claim 1 , wherein the metal oxide comprises ZrOor BaSO.4. The catalyst according to claim 3 , wherein the metal oxide comprises BaSO.5. The catalyst according to claim 1 , wherein the amount of Pd supported on the carrier is from 0.001 to 10 wt. %.6. The catalyst according to claim 1 , wherein the amount of Rh supported to the carrier is from 2% to 30% of the amount of Pd.7. The catalyst according to claim 6 , wherein the amount of Rh supported on the carrier is from 5% to 20% of the amount of Pd.8. The catalyst according to claim 1 , wherein Rh and Pd are the only metals of Group 9 and Group 10 of the Periodic Table supported on its carrier.9. A method for manufacturing the catalyst according to claim 1 , comprising impregnating the carrier with Pd and Rh precursors.10. The method according to claims 9 , wherein the precursors comprise an inorganic or organic salt of Pd and an inorganic or organic salt of Rh.11. The method according to claim 10 , wherein the precursors comprise a halide salt of Pd and a halide salt of Rh.12. The method according to claim 1 , wherein Rh and Pd are the only metals of Group 9 and Group 10 of the Periodic Table supported on the ...

Process for producing hydrogen peroxide

A process for manufacturing hydrogen peroxide by an anthraquinone autoxidation process (AO-process) comprising two alternate essential steps of: (a) hydrogenation of a working solution in a hydrogenation unit in the presence of a catalyst, wherein the working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent, to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of the at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; and further comprising step (c): extracting the hydrogen peroxide formed in the oxidation step in an extraction unit, wherein the hydrogenation, oxidation and extraction steps are performed in an reactor system which is designed as a compact modular system of a hydrogenation, an oxidation and an extraction unit, and wherein the reactor system is configured to operate without a reversion (regeneration) unit for continuous reversion of the working solution as a small to medium scale AO-process with a production capacity of hydrogen peroxide of up to 20 kilo tons per year, wherein the working solution and/or the catalyst are replaced and/or treated for regeneration or reactivation only intermittently or periodically, e.g., with a low frequency. 1. A process for manufacturing hydrogen peroxide by an anthraquinone autoxidation process (AO-process) , said manufacturing process comprising two alternate essential steps (a) and (b):(a) hydrogenation of a working solution in a hydrogenation unit in the presence of a catalyst, wherein said working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent, to obtain at least one corresponding alkylanthrahydroquinone compound; and(b) oxidation of said at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; andfurther comprising step (c):(c) extracting the hydrogen peroxide formed in the oxidation step in an extraction ...

INTEGRATED PROCESS AND PLANT FOR MAKING STYRENE AND PROPENE OXIDE

An integrated process for making styrene and propene oxide which comprises the steps: 114-. (canceled)15. An integrated process for making styrene and propene oxide , comprising the steps:a) dehydrogenating ethylbenzene in a reaction mixture comprising a dehydrogenation catalyst;b) separating styrene and hydrogen from the reaction mixture of step a);c) producing hydrogen peroxide from hydrogen separated in step b) and oxygen;d) reacting propene with the hydrogen peroxide obtained in step c) in the presence of an epoxidation catalyst to provide a reaction mixture comprising propene oxide; ande) separating propene oxide from the reaction mixture obtained in step d).16. The integrated process of claim 15 , wherein step a) is carried out in the presence of steam; step c) uses a palladium metal catalyst; and step b) comprises removal of carbon monoxide from separated hydrogen.17. The integrated process of claim 16 , wherein carbon monoxide is removed by pressure swing adsorption.18. The integrated process of claim 15 , wherein step c) comprises:c1) hydrogenating a working solution, containing an alkylanthraquinone, an alkyltetrahydroanthraquinone or both, with hydrogen separated in step b) in a hydrogenation reactor in the presence of the palladium metal catalyst to provide a hydrogenated working solution comprising an alkylanthrahydroquinone, an alkyltetrahydroanthrahydroquinone or both;c2) oxidizing hydrogenated working solution obtained in step c1) with an oxygen-containing gas in an oxidation reactor to provide an oxidized working solution comprising hydrogen peroxide and an alkylanthraquinone, an alkyltetrahydroanthraquinone or both;c3) extracting hydrogen peroxide from oxidized working solution obtained in step c2) to provide an aqueous solution of hydrogen peroxide.19. The integrated process of claim 15 , wherein step b) comprises separating nonreacted ethylbenzene from the reaction mixture of step a) and recycling the separated ethylbenzene to step a).20. The ...

EXHAUST GAS TREATMENT SYSTEM

Described are exhaust gas treatment systems for treatment of a gasoline engine exhaust gas stream. The exhaust gas treatment systems comprise an ammonia generating and hydrocarbon oxidation catalyst, a TWC catalyst, and an ammonia selective catalytic reduction (SCR) catalyst downstream of the TWC catalyst. The ammonia generating and hydrocarbon oxidation catalyst comprises a refractory metal oxide support, a platinum component, and a palladium component. The ammonia generating and hydrocarbon oxidation catalyst is substantially free of ceria and substantially free of NOstorage components. The platinum and palladium components are present in a platinum to palladium ratio of greater than about 1 to 1. 1. A gasoline engine exhaust gas treatment system comprising:{'sub': 'x', 'an ammonia generating and hydrocarbon oxidation catalyst comprising a refractory metal oxide support, a platinum component, and a palladium component, wherein the platinum component and the palladium components are present in a platinum to palladium (Pt/Pd) ratio of greater than 1 to 1, and wherein the ammonia generating and hydrocarbon oxidation catalyst is substantially free of ceria and substantially free of a NOstorage component;'}a three-way conversion (TWC) catalyst; andan ammonia selective catalytic reduction (SCR) catalyst downstream of the three-way conversion catalyst.2. The gasoline engine exhaust gas treatment system of claim 1 , wherein the refractory metal oxide support is selected from alumina claim 1 , silica claim 1 , titania claim 1 , zirconia and combinations thereof.3. The gasoline engine exhaust gas treatment system of claim 1 , wherein the Pt/Pd ratio is about 2/1 to about 100/1.4. The gasoline engine exhaust gas treatment system of claim 3 , wherein the Pt/Pd ratio is about 4/1 to about 20/1.5. The gasoline engine exhaust gas treatment system of claim 1 , wherein the TWC catalyst is downstream of the ammonia generating and hydrocarbon oxidation catalyst.6. The gasoline ...

WET CHEMICAL AND PLASMA METHODS OF FORMING STABLE PTPD CATALYSTS

A nano-particle comprising: an interior region comprising a mixed-metal oxide; and an exterior surface comprising a pure metal. In some embodiments, the mixed-metal oxide comprises aluminum oxide and a metallic pinning agent, such as palladium, copper, molybdenum, or cobalt. In some embodiments, the pure metal at the exterior surface is the same as the metallic pinning agent in the mixed-metal oxide in the interior region. In some embodiments, a catalytic nano-particle is bonded to the pure metal at the exterior surface. In some embodiments, the interior region and the exterior surface are formed using a plasma gun. In some embodiments, the interior region and the exterior surface are formed using a wet chemistry process. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a plasma gun. In some embodiments, the catalytic nano-particle is bonded to the pure metal using a wet chemistry process. 1. A nano-particle comprising: 'an exterior surface comprising pure metallic palladium.', 'an interior region comprising a mixed-metal oxide, wherein the mixed-metal oxide comprises aluminum oxide and palladium; and'}2. The nano-particle of claim 1 , wherein the palladium in the interior region extends to and is bonded with the pure metallic palladium at the exterior surface.3. The nano-particle of claim 1 , wherein the nano-particle comprises a diameter of approximately 10 nanometers or less.4. The nano-particle of claim 1 , wherein the mixed-metal oxide forms a center core of the nano-particle.5. The nano-particle of claim 4 , wherein the mixed-metal oxide consists only of aluminum oxide and palladium.6. The nano-particle of claim 1 , wherein the mixed-metal oxide forms a monolayer that surrounds a center core of the nano-particle.7. The nano-particle of claim 6 , wherein the center core comprises silica.8. A method of forming nano-particles claim 6 , the method comprising:loading a quantity of aluminum oxide material and a quantity of palladium ...

Process for producing hydrogen peroxide

A process for manufacturing hydrogen peroxide by an anthraquinone autoxidation process (AO-process) comprising two alternate (essential) steps of: (a) hydrogenation of a working solution in a hydrogenation unit in the presence of a catalyst, wherein such working solution contains at least one alkylanthraquinone dissolved in at least one organic solvent, to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of the at least one alkylanthrahydroquinone compound to obtain hydrogen peroxide in an oxidation unit; and further comprising the step of: (c) extracting the hydrogen peroxide formed in the oxidation step in an extraction unit, wherein the units of step (a) to (c), optionally together with further ancillary units as appropriate, constitute a hydrogen peroxide production site, wherein one or more of said units are equipped with one or more sensors for monitoring one or more AO-process parameters at the hydrogen peroxide production site, said sensors being interconnected with one or more first computers at the hydrogen peroxide production site, said first computers being linked via a communication network to one or more second computers in a control room being remote from the hydrogen peroxide production site, and said control room being remotely controlling such hydrogen peroxide production site.

Process for the Manufacture of Hydrogen Peroxide

A continuous process for producing hydrogen peroxide by an anthraquinone process, comprising the steps of: (i) hydrogenating an organic working solution containing one or more anthraquinone derivatives in the presence of a heterogeneous catalyst to form a hydrogenated working solution; (ii) oxidizing the hydrogenated working solution by introducing an oxygen-containing oxidizing gas at an overpressure into an oxidation reactor, and contacting the oxidizing gas with the hydrogenated working solution to form an oxidized working solution, whereby hydrogen peroxide is formed; (iii) withdrawing an oxidation off gas from the oxidation reactor; (iv) recovering the formed hydrogen peroxide from the oxidized working solution; (v) subjecting the oxidation off gas withdrawn from said oxidation reactor, which has an excess pressure over atmospheric pressure, to a demisting treatment to obtain a demisted oxidation off gas; and (vi) feeding the demisted oxidation off gas as propellant gas into a gas ejector to produce a vacuum.

Method and generator for generation of Hydrogen Peroxide

A method and generator for generation of hydrogen peroxide which operate on the principle of conveying air-liquid or vapor flow through a corona discharge zone in air. Such devices can be used for disinfection of air and of various objects for industrial and home uses.

Purified Hydrogen Peroxide Gas Generation Methods and Devices

The present disclosure provides for and includes improved devices and methods for the production of Purified Hydrogen Peroxide Gas (PHPG) that is substantially non-hydrated and substantially free of ozone. 1. A device for producing non-hydrated purified hydrogen peroxide gas (PHPG) comprising:a. an enclosure;b. an air distribution mechanism providing an airflow;c. an air-permeable substrate structure that is a mesh between 250 and 750 nm thick having a percentage of open area between 10% and 60%, said mesh having a catalyst on its surface;d. a source of light; andwherein said airflow is through said air-permeable substrate structure; andsaid device produces PHPG and directs it out of said enclosure when in operation.2. The device of claim 1 , wherein said catalyst comprises titanium dioxide and said source of light is a source of ultraviolet light.3. The device of claim 1 , wherein said catalyst comprises tungsten trioxide or a mixture of titanium dioxide and tungsten trioxide and said source of light is visible light with an energy of at least 2.85 electron volts (eV).450.-. (canceled)51. A device for producing non-hydrated purified hydrogen peroxide gas (PHPG) when installed into a heating claim 1 , ventilating claim 1 , and air conditioning (HVAC) system comprising:a. an air-permeable substrate structure that is a mesh between 5 and 750 nm thick having a percentage of open area between 10% and 60%, said mesh having a catalyst on its surface; andb. a source of light;wherein air flows from the HVAC system through said air-permeable substrate structure and said device produces PHPG and directs it away from said air-permeable substrate structure having a catalyst on its surface when in operation and into a heated, ventilated and air conditioned space.52. The device of claim 51 , wherein said catalyst comprises titanium dioxide and said source of light is a source of ultraviolet light.53. The device of claim 51 , wherein said catalysts comprises tungsten trioxide or a ...

A process for manufacturing a purified aqueous hydrogen peroxide solution

The present invention relates to an improved process for manufacturing a purified aqueous hydrogen peroxide solution. The invention further relates to a plant for producing hydrogen peroxide in which the improved process for manufacturing a purified aqueous hydrogen peroxide solution according to the present invention is employed.

Catalyst for direct synthesis of hydrogen peroxide

A catalyst comprising: a platinum group metal, silver or gold, and a carrier containing niobium or tantalum oxide or niobium or tantalum phosphate, and an oxide other than niobium or tantalum oxide, as well as its use in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of such catalyst in a reactor, and a process for producing such catalyst. 1. A catalyst comprising:at least one catalytically active metal selected from the group consisting of a platinum group metal, silver, gold, and a mixture thereof, anda carrier containing niobium oxide, tantalum oxide, niobium phosphate, or tantalum phosphate,wherein the carrier contains at least 65 wt. % of an oxide other than niobium oxide or tantalum oxide, based on the total weight of said oxides or based on the total weight of said oxide other than niobium oxide or tantalum oxide and said niobium phosphate or tantalum phosphate, andwherein said niobium oxide, tantalum oxide, niobium phosphate, or tantalum phosphate is precipitated onto said oxide other than niobium oxide or tantalum oxide.2. The catalyst according to claim 1 , wherein said catalytically active metal is a platinum group metal.3. The catalyst according to claim 1 , wherein said carrier contains from 60 to 95 wt. % of said oxide other than niobium oxide or tantalum oxide.4. The catalyst according to claim 1 , wherein said oxide other than niobium oxide or tantalum oxide is selected from the group consisting of silica claim 1 , alumina claim 1 , titanium oxide claim 1 , barium oxide claim 1 , zirconium oxide claim 1 , and mixtures thereof.5. The catalyst according to claim 4 , wherein said oxide other than niobium oxide or tantalum oxide comprises silica.6. The catalyst according to claim 1 , wherein said platinum group metal claim 1 , silver claim 1 , gold or mixture thereof is present in an amount of from 0.001 to 10 wt. % claim 1 , each based on the weight of said carrier.7. ...

CATALYST, CATALYST COMPOSITION CONTAINING PT-NI ALLOY AND METHODS FOR SYNTHESIZING OF HYDROGEN PEROXIDE USING THEM

A catalyst and a catalyst composition, a method for preparing thereof, and a method for synthesizing of hydrogen peroxide using them are provided. The catalyst and the catalyst composition contains: an alloy of two elements, wherein the elements are Pt (Platinum) and Ni (Nickel). The present disclosure enables (a) replacing a high-priced palladium (Pd) catalyst with a new catalyst, (b) providing a high-active catalyst which catalyzes the direct synthesis reaction of the hydrogen peroxide. 1. A catalyst , containing: an alloy of two elements , wherein the elements are Pt (Platinum) and Ni (Nickel).2. The catalyst of claim 1 , wherein the alloy forms solid solution.3. The catalyst of claim 1 , wherein the alloy has a face-centered tetragonal structure.4. The catalyst of claim 1 , wherein the alloy catalyzes direct synthesis reaction of hydrogen peroxide (HO).5. The catalyst of claim 1 , wherein a molecular formula of the alloy is represented as PtNi claim 1 , and wherein the X satisfies no less than 1 and no more than 83.6. The catalyst of claim 1 , wherein a molecular formula of the alloy is represented as PtNi claim 1 , and wherein the X satisfies no less than 6 and no more than 83.7. The catalyst of claim 6 , wherein the Pt—Ni catalyst has 40% or more of a degree of activity of Pdcatalyst in the course of direct synthesis reaction of hydrogen peroxide.8. The catalyst of claim 1 , wherein a structure of the Pt—Ni catalyst is similar to that of a Palladium (Pd) catalyst.9. The catalyst of claim 1 , wherein an electronic structure of the Pt—Ni catalyst is similar to that of a Palladium (Pd) catalyst in that DOS (Electron Density of State) values of the Pt—Ni catalyst are similar to those of the Pd catalyst.10. A catalyst composition claim 1 , containing: an alloy of two elements claim 1 , wherein the elements are Pt (Platinum) and Ni (Nickel).11. The catalyst composition of claim 10 , wherein the alloy forms solid solution.12. The catalyst composition of claim 10 , ...

Purified Hydrogen Peroxide Gas Generation Methods and Devices

The present disclosure provides for and includes improved devices and methods for the production of Purified Hydrogen Peroxide Gas (PHPG) that is substantially non-hydrated and substantially free of ozone. 2. (canceled)3. The device of claim 1 , wherein said airflow comprises an angle of incidence to said substrate structure that is greater than 14°.4. (canceled)5. (canceled)6. (canceled)7. The device of claim 1 , wherein said airflow comprises air having a humidity of at least 5%.8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. The device of claim 1 , wherein said air-permeable substrate structure is a mesh having a percentage of open area between 10% and 60%.14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. The device of claim 1 , wherein said ultraviolet light illuminates said air-permeable substrate structure with light having an intensity of between 0.1 watts per square inch and 150 watts per square inch at the surface of said substrate.19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. The device of claim 76 , further comprising a filter that blocks ultraviolet light having a wavelength of 188 nm or less.24. (canceled)25. The device of claim 78 , wherein at least 90% of the power of said light is emitted between 340 nm and 380 nm.26. (canceled)27. The device of claim 76 , wherein less than 1% of said light is ultraviolet B radiation having a wavelength of between 280 nm and 315 nm.28. (canceled)29. (canceled)30. The device of claim 1 , further comprising one or more filters to remove one or more contaminants from said airflow prior to flowing through said air-permeable substrate structure selected from the group consisting of nitrogen oxide (NOx) claim 1 , sulfur oxide (Sox) claim 1 , volatile organic molecules (VOM) claim 1 , household dust claim 1 , pollen claim 1 , dust-mite debris claim 1 , mold spores claim 1 , pet dander claim 1 , smoke claim 1 , smog claim 1 , and bacteria.31. (canceled)32. (canceled)33. ( ...

METHOD FOR REGENERATING WORKING SOLUTION USED FOR PRODUCTION OF HYDROGEN PEROXIDE AND METHOD FOR PRODUCING HYDROGEN PEROXIDE USING REGENERATED WORKING SOLUTION

In the production of hydrogen peroxide, when ketone forms are increased upon conversion from higher alcohol components in organic solvents, such increased levels of ketone forms reduce the water content in a working solution and lead to deterioration of catalytic activity. Moreover, increased levels of ketone forms reduce the solubility of anthrahydroquinone compounds and may cause an obstacle to stable and safe operation in the production of hydrogen peroxide due to crystallization and deposition of the anthrahydroquinone compounds. 1. A process for regeneration of a working solution provided for continuous use in the production of hydrogen peroxide via the anthraquinone process , the process comprisingdistilling the working solution to separate organic solvent components containing an alcohol and the ketone form of the alcohol; andsubjecting resulting organic solvent components to hydrogenation treatment in the presence of a metal catalyst to regenerate the ketone form back into the original alcohol.2. The process according to claim 1 , wherein as a result of hydrogenation treatment of the organic solvent components in the presence of a metal catalyst claim 1 , a remaining percentage of the ketone form in the organic solvent components (=ketone form/organic solvent components×100) is 10% by mass or less.3. The process according to claim 1 , wherein the metal catalyst is a metal compound comprising at least one selected from the group consisting of palladium claim 1 , rhodium claim 1 , ruthenium claim 1 , platinum claim 1 , copper and chromium.4. The process according to claim 1 , wherein the metal catalyst is a metal compound comprising copperchromium claim 1 , or both.5. The process lution according to claim 1 , wherein the amount of the metal catalyst added is 0.05% by mass to 10% by mass relative to the mass of the organic solvent components.6. The process according to claim 1 , wherein pressure for the hydrogenation treatment is atmospheric pressure to 10 MPa. ...

CATALYST FOR SYNTHESIS OF HYDROGEN PEROXIDE AND SYNTHESIS OF HYDROGEN PEROXIDE USING SAME

Provided is a catalyst for synthesizing hydrogen peroxide as represented by the following Chemical Formula 1: 1. A catalyst for synthesizing hydrogen peroxide , the catalyst represented by Chemical Formula 1 provided below:{'br': None, 'sub': x', '(1-x), 'RhAg,\u2003\u2003[Chemical Formula 1]'}where 0 Подробнее

Catalyst for direct synthesis of hydrogen peroxide comprising zirconium oxide

A catalyst comprising: a platinum group metal, silver, gold, or a mixture thereof, and a carrier containing an oxide other than zirconium oxide and a precipitate layer of zirconium oxide onto the oxide other than zirconium oxide, as well as their uses in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of such catalyst in a reactor, and a process for producing such catalyst. 1. A catalyst comprising at least one metal selected from the group consisting of a platinum group metal , silver , gold , and any mixture thereof , and a carrier containing an oxide other than zirconium oxide and a precipitate layer of zirconium oxide onto said oxide other than zirconium oxide.2. The catalyst according to claim 1 , wherein said catalyst comprises a platinum group metal selected from the group consisting of ruthenium claim 1 , rhodium claim 1 , palladium claim 1 , osmium claim 1 , iridium claim 1 , and platinum.3. The catalyst according to claim 1 , wherein said catalyst comprises palladium or a combination of palladium with another metal.4. The catalyst according to claim 1 , wherein said carrier contains from 30 to 99 wt. % of the oxide other than zirconium oxide claim 1 , based on the total weight of the oxides.5. The catalyst according to claim 1 , wherein said oxide other than zirconium oxide is selected from the group consisting of silica claim 1 , alumina claim 1 , niobium oxide claim 1 , titanium oxide claim 1 , barium oxide claim 1 , and mixtures thereof.6. The catalyst according to claim 4 , wherein said oxide other than zirconium oxide comprises silica.7. The catalyst according to claim 1 , wherein said platinum group metal claim 1 , silver claim 1 , gold claim 1 , or a mixture thereof is present in an amount of from 0.001 to 10 wt. % claim 1 , each based on the weight of the carrier.8. The catalyst according to claim 1 , being obtainable by depositing the metal selected from the group ...

PREPARATION OF 2,6- AND 2,7-DISUBSTITUTED ANTHRAQUINONE DERIVATIVES

The present invention relates to novel anthraquinone derivatives, 2,6-diisohexylanthracene-9,10-dione and 2,7-diisohexyl-anthracene-9,10-dione, preferably to be used for the preparation of hydrogen peroxide, and to a process for the preparation of these anthraquinone derivatives. 4. The composition of claim 3 , wherein at least 90 weight % of the composition consist of the compounds of formula (Ia) and formula (Ib).5. The composition of claim 3 , wherein a molar ratio of the compound of formula (Ia) relative to the compound of formula (Ib) is in a range of from 0.2:1 to 5:1.6. The composition of claim 3 , having a solubility of at least 1.0 mol/l in a solvent mixture of which at least 99.9 weight-% consist of ortho-xylene and diisobutyl carbinol with a molar ratio of the ortho-xylene relative to the diisobutyl carbinol in a range of from 0.99:1 to 1.01:1 claim 3 , wherein said solubility refers to a molar amount of the compound of formula (Ia) plus a molar amount of the compound of formula (Ib) dissolved in 1 l of the solvent mixture at a temperature of from 20 to 23° C. and at a pressure of from 0.9 to 1.1 bar.7. The composition of claim 3 , wherein at least 90 weight % of the compound of formula (Ia) and at least 96 weight % of the compound of formula (Ib) are present in solid form.8. The composition of claim 3 , being at least partially dissolved in a solvent.12. The process of claim 11 , wherein the reacting (b) is carried out in a solvent.13. The process of claim 11 , further comprising: after (b) and prior to (c) claim 11 ,(b′) separating the compounds of formula (Va) and/or formula (Vb) from the mixture obtained in (b), thereby obtaining a mixture comprising the compounds of formula (Va) and/or formula (Vb).14. The process of claim 11 , wherein prior to (c) claim 11 , the compounds of formula (Va) and/or formula (Vb) are not separated from the mixture obtained in (b).15. The process of claim 11 , wherein the oxidation reaction in (c) is carried out in a ...

METAL COMPLEX AND METHOD FOR PRODUCING HYDROGEN PEROXIDE

An object of the present invention is to provide a novel method for producing hydrogen peroxide by direct synthesis that is capable of taking the place of the conventional anthraquinone process, and to provide a catalyst used in the production method. 2: The metal complex according to claim 1 , wherein the number of carbon atoms of the alkyl group is 1 to 4 claim 1 , the number of carbon atoms of the aralkyl group is 7 to 10 claim 1 , the number of carbon atoms of the aryl group is 6 to 9 claim 1 , the number of carbon atoms of the alkoxy group is 1 to 4 claim 1 , the number of carbon atoms of the aralkyloxy group is 7 to 10 claim 1 , and the number of carbon atoms of the aryloxy group is 6 to 9.3: The metal complex according to claim 1 , represented by the formula (1) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , one of X claim 1 , Y and Z represents OH claim 1 , the remaining two represent HO claim 1 , and An1 represents a nitrate ion.4: The metal complex according to claim 1 , represented by the formula (2) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , Y represents HO and An2 represents a nitrate ion.5: The metal complex according to claim 1 , represented by the formula (3) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , Y represents HO and An3 represents a nitrate ion.6: The metal complex according to claim 1 , represented by the formula (4) claim 1 , wherein R claim 1 , R claim 1 , R claim 1 , R claim 1 , R claim 1 , Rand Rrepresent hydrogen atoms claim 1 , Rand Rrepresent methyl groups claim 1 , X and Y represent HO and An4 represents a nitrate ion.8: The metal complex according to claim 1 , represented by the formula (1).9: The ...

RECOVERY OF AQUEOUS HYDROGEN PEROXIDE IN AUTO-OXIDATION H202 PRODUCTION

Hydrogen peroxide produced in an auto-oxidation process is recovered from HO—containing organic solution via liquid-liquid extraction with an aqueous medium in a device having elongated channels, with a small cross-sectional dimension, that facilitate efficient extraction of aqueous hydrogen peroxide from the organic solution. 1. A method for the recovery of hydrogen peroxide produced in an auto-oxidation process comprising contacting a HO-containing organic solution in an auto-oxidation process with an aqueous extraction medium in a device with elongated channels having at least one cross sectional dimension within the range of from about 5 microns to about 5 mm , to effect liquid-liquid extraction of hydrogen peroxide from the organic solution into the aqueous medium , and thereafter separating the aqueous medium containing extracted hydrogen peroxide from the HO-depleted organic solution to obtain a HO-containing aqueous solution.2. The method of wherein the channeled device has at least one cross sectional dimension within the range of from about 50 microns to about 3 mm.3. The method of wherein the channeled device contains at least one inlet connecting one or more channels and an outlet connecting the channels claim 1 , for respectively introducing the organic solution and aqueous medium into the extraction device and for removing a two phase liquid mixture from the extraction device.4. The method of wherein the channeled device further contains at least one additional passageway adjacent to at least one extraction channel for effecting heat transfer and temperature control during the extraction process using a heat transfer fluid in said at least one additional passageway.5. The method of wherein the channeled device comprises layered sheets that contain an interconnected channel network.6. The method of wherein the separation of the aqueous medium containing extracted hydrogen peroxide from the HO-depleted organic solution is carried out in a liquid-liquid ...

METHOD AND DEVICE FOR CARRYING OUT A REACTION BETWEEN AT LEAST TWO REACTANTS

A method for carrying out a reaction between at least two reactants in a liquid reaction solution in at least one reaction zone so as to produce a reaction product includes carrying out a reaction continuously in a reaction flow for the at least one reaction zone in an extension of the at least one reaction zone as far as at least one reaction product outlet, introducing each of the at least two reactants over the extension of the at least one reaction zone via inlets in which the reaction flow is introduced, and removing the reaction product via the at least one reaction product outlet. 1. A method for carrying out a reaction between at least two reactants in a liquid reaction solution in at least one reaction zone so as to produce a reaction product , the method comprising:a) carrying out the reaction continuously in a reaction flow for the at least one reaction zone in an extension of the at least one reaction zone as far as at least one reaction product outlet;b) introducing each of the at least two reactants over the extension of the at least one reaction zone via inlets in which the reaction flow is introduced; andc) removing the reaction product via the at least one reaction product outlet;wherein the at least two reactants are gaseous,wherein the inlets are spanned by sieve elements or membranes, andwherein the reactants are introduced in series and in an alternating manner into the reaction flow at each of the at least two inlets over the extension of the at least one reaction zone until saturation in the reaction solution is reached.2. The method according to claim 1 , wherein one of the at least two reactants is hydrogen and another of at least two reactants is oxygen claim 1 , andwherein the reaction product is hydrogen peroxide.3. The method according to claim 1 , wherein at least one catalyst material is dissolved or suspended in at least one of the reactants.4. A device for carrying out a continuous reaction between at least two reactants in a liquid ...

APPARATUS FOR GENERATING HYDROGEN PEROXIDE

An apparatus for the production of hydrogen peroxide. The apparatus can have a substrate consisting of a substantially triboelectrically neutral material, a catalyst disposed upon the substrate, and an energy source to provide energy for ambient oxygen and water vapor to react and form hydrogen peroxide. The apparatus does not produce any ozone as a byproduct. The apparatus produces pure hydrogen peroxide gas which is not insulated by water molecules. Further the hydrogen peroxide gas is self-regulating to a concentration of 0.02 parts per million even when continuously produced by the apparatus. 1. An apparatus for the production of hydrogen peroxide from ambient air comprising:a) a substrate consisting of a substantially triboelectrically neutral material;b) a catalyst disposed upon the substrate; andc) an energy source proximate the substrate and the catalyst; andwherein the catalyst aids oxygen and water vapor in ambient air to form hydrogen peroxide without generating ozone as a byproduct.2. The apparatus of claim 1 , wherein the substrate consists of:a) wool;b) a steel;c) cotton;d) paper;e) wood;f) aluminum;g) a fiberglass;h) a composite; ori) combinations thereof.3. The apparatus of claim 1 , wherein the substrate has a triboelectric affinity from −30 nC/J to 30 nC/J.4. The apparatus of claim 1 , wherein the substrate comprises projections or holes to maximize the surface area of the catalyst exposed to air.5. The apparatus of claim 1 , wherein the substrate is a three-dimensional shape encompassing a volume of air.6. The apparatus of claim 1 , wherein the substrate has a thermal conductivity of less than 1 W/Mk.7. The apparatus of claim 1 , further comprising a fan for moving ambient air across the substrate and the catalyst and/or for moving hydrogen peroxide away from the substrate and the catalyst.8. The apparatus of claim 1 , wherein the catalyst comprises:a) titanium;b) silver;c) rhodium; ord) copper.9. The apparatus of claim 1 , wherein the energy ...

Catalysts and Related Methods for Photocatalytic Production of H2O2 and Thermocatalytic Reactant Oxidation

Catalysts, catalytic systems and related synthetic methods for in situ production of HOand use thereof in reaction with oxidizable substrates. 1. A catalytic system comprising:{'sub': 2', '2', '2', '2', '2', '2, 'a photocatalyst for production of HOfrom Oand a proton donor component, said photocatalyst comprising a particulate TiOcore component and a SiOshell component coupled to said core component, said photocatalyst comprising TiOsurface areas;'}{'sub': '2', 'a thermocatalyst for reactant oxidation, said thermocatalyst adjacent to said photocatalyst and comprising a SiOcomponent and a transition metal moiety coupled thereto;'}{'sub': '2', 'a reaction medium comprising O, a proton donor component and an oxidizable reactant component; and'}{'sub': 2', '2, 'ultra-violet radiation introduced to said reaction medium for a time and at a wavelength sufficient to produce HOand oxidize said reactant component therewith.'}2. The system of wherein said proton donor component is selected from alcohols.3. The system of wherein said oxidizable reactant component is selected from alkenes.4. The system of wherein said transition metal moiety is selected from V claim 1 , Ti claim 1 , Cr claim 1 , Mn claim 1 , Co claim 1 , Cu claim 1 , Zn claim 1 , Mo claim 1 , Nb claim 1 , Ta claim 1 , W claim 1 , Os claim 1 , Re claim 1 , Ir claim 1 , and Sn moieties.5. The system of wherein said transition metal moiety is Ti.6. The system of wherein said alkene is propylene.7. The system of wherein said photocatalyst and said thermocatalyst are provided on said TiOcore component claim 1 , said transition metal moiety coupled to said SiOshell component.8. The system of wherein said transition metal is Ti and said oxidizable reactant is propylene.9. The system of wherein said alcohol is isopropanol.10. The system of wherein acetone is a by-product of said HOproduction.11. The system of comprising a hydrogenation catalyst to reduce said acetone and regenerate said isopropanol.12. A composition ...

CORE-SHELL TYPE CATALYST AND GAS SENSOR INCLUDING THE CATALYST

A core-shell structure (a diameter is about 5 nm) is located on an AlOcatalyst support. Platinum (Pt metal) is a core, and a shell that surrounds the core has a solid solution structure (ABO) (where X is a composition that composes A and B, and Y is a composition of oxygen (O)) that is composed of platinum, palladium, and oxygen.

CORE-SHELL NANOPARTICLE, METHOD FOR MANUFACTURING SAME AND METHOD FOR PRODUCING HYDROGEN PEROXIDE USING SAME

This invention relates to core-shell nanoparticles having acid sites, a method of manufacturing the same, and a method of directly producing hydrogen peroxide using the same. 1. A core-shell nanoparticle , comprising:a shell including silica and alumina and having an acid site; anda core including a metal nanoparticle surrounded by the shell.2. The core-shell nanoparticle of claim 1 , wherein the shell includes at least one selected from the group consisting of a Lewis acid site and a Bronsted acid site.3. The core-shell nanoparticle of claim 1 , wherein the metal nanoparticle is used in an amount of 0.1 to 30 wt % based on a total weight of the core-shell nanoparticle.4. The core-shell nanoparticle of claim 1 , wherein the metal nanoparticle includes at least one selected from the group consisting of a noble metal claim 1 , a transition metal claim 1 , and an alloy thereof claim 1 , andthe noble metal includes at least one selected from the group consisting of palladium, platinum, gold, silver, rhodium, and rhenium.5. The core-shell nanoparticle of claim 1 , wherein the metal nanoparticle has a size of 1 to 30 nm.6. The core-shell nanoparticle of claim 1 , wherein the silicon and aluminum of the shell are mixed at a molar ratio of 10 to 500:1.7. A method of manufacturing the core-shell nanoparticle of claim 1 , comprising steps of:(1) preparing a metal nanoparticle;(2) dispersing the prepared metal nanoparticle in a dispersion solvent, adding a base solution, and performing stirring;(3) adding the solution stirred in the step (2) with a silica precursor and an alumina precursor, thus forming a shell including silica and alumina on a surface of the metal nanoparticle; and(4) thermally treating the metal nanoparticle having the shell including silica and alumina formed on the surface thereof.8. The method of claim 7 , wherein the dispersion solvent includes at least one selected from the group consisting of an organic solvent and water claim 7 , andthe organic ...

CARBON-BASED CATALYSTS FOR OXYGEN REDUCTION REACTIONS

In some embodiments, the present disclosure pertains to catalysts for mediating oxygen reduction reactions, such as the conversion of oxygen to at least one of HO, HO, O, OH, and combinations thereof. In some embodiments, the present disclosure pertains to methods of utilizing the catalysts to mediate oxygen reduction reactions. In some embodiments, the catalyst includes a carbon source and a dopant associated with the carbon source. In some embodiments, the catalyst has a three-dimensional structure, a density ranging from about 1 mg/cmto about 10 mg/cm, and a surface area ranging from about 100 m/g to about 1,000 m/g. In some embodiments, the carbon source includes graphene nanoribbons, and the dopant includes boron-nitrogen heteroatoms. In some embodiments, the dopant is covalently associated with the edges of the carbon source. Additional embodiments of the present disclosure pertain to methods of making the aforementioned catalysts. 1. A Method of mediating an oxygen reduction reaction , a carbon source; and', 'a dopant associated with the carbon source., 'wherein the method comprises exposing a catalyst to oxygen, wherein the catalyst comprises2. The method of claim 1 , wherein the catalyst further comprises a plurality of active sites for mediating the oxygen reduction reaction.3. The method of claim 1 , wherein the catalyst consists essentially of the carbon source and the dopant.4. The method of claim 1 , wherein the catalyst is substantially free of metals.5. The method of claim 1 , wherein the exposing of the catalyst to oxygen results in conversion of oxygen to at least one of HO claim 1 , HO claim 1 , O claim 1 , OH claim 1 , and combinations thereof.6. The method of claim 1 , wherein the carbon source is selected from the group consisting of carbon nanoribbons claim 1 , graphene nanoribbons claim 1 , functionalized graphene nanoribbons claim 1 , graphene oxide nanoribbons claim 1 , reduced graphene oxide nanoribbons claim 1 , and combinations thereof.7 ...

PEROVSKITE COMPOUND, METHOD FOR PRODUCING THE PEROVSKITE COMPOUND, CATALYST FOR FUEL CELL INCLUDING THE PEROVSKITE COMPOUND AND METHOD FOR PRODUCING THE CATALYST

Disclosed are a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst. The perovskite compound overcomes the low stability of palladium due to its perovskite structural properties. Therefore, the perovskite compound can be used as a catalyst material for a fuel cell. In addition, the use of palladium in the catalyst instead of expensive platinum leads to an improvement in the price competitiveness of fuel cells. The catalyst is highly durable and catalytically active due to its perovskite structure. 1. A perovskite compound represented by Formula 1:{'br': None, 'sub': n', '(1-n)', '3, '[APd][B][X]\u2003\u2003(1)'}wherein A is a metal other than palladium, B is selected from nitrogen, phosphorus,sulfuric acid, boron, carbon, and oxygen, X is identical to or different from A and is a metal other than palladium, and n is a real number satisfying 0≤n<1.2. The perovskite compound according to claim 1 , wherein each of A and X in Formula 1 is independently selected from nickel claim 1 , cobalt claim 1 , copper claim 1 , iron claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , and zinc.3. The perovskite compound according to claim 1 , wherein n in Formula 1 is a real number satisfying 0.1≤n≤0.5. This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2019-0025889 filed on Mar. 6, 2019 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.The present invention relates to a perovskite compound, a method for producing the perovskite compound, a catalyst for a fuel cell including the perovskite compound, and a method for producing the catalyst.With an increasing demand for clean renewable energy sources, considerable research efforts have concentrated on fuel cells that use hydrogen as an energy source to generate only water as a byproduct. ...

METHODS FOR MONITORING AND MODELLING THERMAL CHARACTERISTICS OF OXIDATION CATALYST DEVICES

Methods for monitoring thermal characteristics of oxidation catalyst (OC) catalytic composition(s) (CC) are provided, and comprise communicating exhaust gas to the OC, and determining a temperature change of the CC for the time frame based on a plurality of heat sources including heat imparted to the CC from exhaust gas enthalpy, heat imparted to the CC via oxidation of HC and/or CO in exhaust gas, heat imparted to the CC via water present in the exhaust gas condensing on the CC or heat removed from the CC via water evaporating from the CC, and optionally heat exchanged between the CC and the ambient environment. Heat imparted to the CC via water condensing on the CC can be determined using an increasing relative humidity proximate the CC, and heat removed from the CC via water evaporating from the CC can be determined using a decreasing relative humidity proximate the CC. 1. A method for monitoring thermal characteristics of an oxidation catalyst device (OC) , wherein the OC is configured to receive exhaust gas and includes a catalytic composition (CC) capable of oxidizing one or more of combustable hydrocarbons (HC) and carbon monoxide (CO) , the method comprising:communicating exhaust gas to the OC for a time frame, wherein the exhaust gas comprises water and one or more of HC and CO; heat imparted to the CC from the exhaust gas enthalpy,', 'heat imparted to the CC via oxidation of the HC and/or CO,', 'heat exchanged between the CC and an ambient environment of the OC; and', 'heat imparted to the CC via water condensing on the CC or heat removed from the CC via water evaporating from the CC., 'determining a temperature change of the CC for the time frame based on a plurality of heat sources comprising2. The method of claim 1 , wherein the heat imparted to the CC via water condensing on the CC is determined using an increasing relative humidity proximate the CC claim 1 , and heat removed from the CC via water evaporating from the CC is determined using a ...

NANNOCYSTIN PROCESS AND PRODUCTS

Described herein is a process for the total synthesis of macrolactones and macrolactams of formula I 2. A compound of claim 1 , wherein said compound is an E-alkene.3. A compound of claim 1 , wherein said compound is an Z-alkene.5. A process according to wherein said catalyst is a ruthenium catalyst.7. A process according to wherein claim 6 , when Ris other than hydrogen claim 6 , said conditions include reaction of said compound III with 1-chloro-N claim 6 , N claim 6 , 2-trimethyl-1-propenylamine followed by reaction with IV in the presence of base.8. A process according to wherein claim 6 , when Ris hydrogen claim 6 , said conditions include(a) reaction of said compound III with 1-chloro-N, N, 2-trimethyl-1-propenylamine followed by reaction with IV in the presence of base, or(b) reaction of said compound III with IV in the presence of a common peptide coupling reagent.10. A process according to wherein the oxidation employs as the oxidant trivalent iodine in combination with an n-oxyl.11. A process according to employing diacetoxyiodobenzene and 2-azaadamantane N-oxyl (AZADO) as the oxidant.17. A process according to wherein the variables claim 4 , when present claim 4 , are defined as:A is —O— or —NH—;{'sub': '2', 'Q is —O— or —CH—;'}{'sup': '1', 'Ris phenyl;'}{'sup': '2', 'Ris chosen from hydrogen, methyl, ethyl, propyl, butyl, hydroxymethyl, hydroxypropyl and methylthiomethyl;'}{'sup': '3', 'Ris chosen from benzyl, hydroxybenzyl, aminobenzyl, and hydroxybenzyl substituted with one or more halogen;'}{'sup': '4', 'Ris hydrogen or methyl;'}{'sup': '5', 'Ris hydrogen, propyl, or butyl;'}{'sup': '6', 'Ris methyl;'}{'sup': '8', 'Ris chosen from hydrogen, hydroxyl, and methoxy;'}{'sup': '9', 'Ris chosen from hydrogen and methyl; and'}{'sup': '10', 'Ris chosen from hydrogen, methyl, benzyl and cyclopropyl.'}18. A process according to whereinA is —O—;Q is —O—;{'sup': '1', 'Ris phenyl;'}{'sup': '2', 'Ris 2-hydroxy-2-propyl;'}{'sup': '3', 'Ris chosen from benzyl, ...

A Catalyst for Direct Synthesis of Hydrogen Peroxide

The present invention provides a catalyst comprising a platinum group metal (group 10) on a carrier, said carrier comprising a silica core and a precipitate layer of a metal oxide, sulfate or phosphate on said core; said carrier having at least on the surface of the precipitate, a dispersion of an oxide from a metal chosen from W, Mo, Ta and Nb, the metal in said dispersion being different from the metal in the precipitate. The invention also relates to a process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of the catalyst according to the invention in a reactor. 1. A catalyst comprising a platinum group metal on a carrier , said carrier comprising a silica core , and a precipitate layer of a metal oxide , sulfate or phosphate on said core; said carrier having at least on the surface of the precipitate layer , a dispersion of an oxide of a metal selected from the group consisting of W , Mo , Ta and Nb , wherein the metal in the dispersion is different from the metal in the precipitate layer.2. The catalyst according to claim 1 , wherein the silica core comprises particles having a mean diameter of from 150 μm to 4 mm.3. The catalyst according to claim 1 , wherein the precipitate layer comprises ZrO.4. The catalyst according to claim 1 , wherein the silica core comprises silica particles and only part of the silica particles are covered by the precipitate layer.5. The catalyst according to claim 1 , wherein the precipitate layer comprises particles claim 1 , generally of substantially spherical shape claim 1 , generally having a mean particle size in the range of 10 nm.6. The catalyst according to claim 1 , wherein the dispersion of metal oxide comprises W oxide.7. The catalyst according to claim 1 , wherein the metal in the precipitate layer is present in an amount claim 1 , expressed in weight of pure metal versus the total weight of the carrier claim 1 , of below 1000 ppm.8. The catalyst according to claim 1 , wherein ...

Method for the direct synthesis of hydrogen peroxide

The present invention relates to a method for the direct synthesis of hydrogen peroxide using a catalyst comprising at least one catalytically active metal selected from elements in Groups 7 to 11, wherein the catalytically active metal is supported on a carrier comprising at least one compound selected from the group consisting of sulfates and phosphates of alkaline-earth metals, wherein said compound is precipitated on the carrier. 1. A method for the direct synthesis of hydrogen peroxide , comprising reacting hydrogen and oxygen in the presence of a catalyst comprising at least one catalytically active metal selected from elements in Groups 7 to 11 , wherein the catalytically active metal is supported on a carrier comprising at least one precipitated compound selected from the group consisting of sulfates and phosphates of alkaline-earth metals.2. The method according to claim 1 , wherein the catalytically active metal is selected from palladium claim 1 , platinum claim 1 , silver claim 1 , gold claim 1 , rhodium claim 1 , iridium claim 1 , ruthenium claim 1 , osmium claim 1 , and combinations thereof.3. The method according to claim 2 , wherein the catalytically active metal is palladium or the combination of palladium with another metal.4. The method according to claim 1 , wherein the catalytically active metal is present at least partly in reduced form.5. The method according to claim 1 , wherein the carrier further comprises an inorganic oxide selected from elements in Groups 2 to 14 as support material.6. The method according to claim 5 , wherein the inorganic oxide is selected from SiO claim 5 , AlO claim 5 , zeolites claim 5 , BO claim 5 , GeO claim 5 , GaO claim 5 , ZrO claim 5 , TiO claim 5 , MgO claim 5 , and mixtures thereof.7. The method according to claim 6 , wherein the inorganic oxide is SiO.8. The catalyst method to claim 1 , wherein the alkaline-earth metal compound is barium sulfate.9. The method according to claim 8 , wherein the barium content ...

Plasma Activated Water

A thermal and non-thermal plasma activated water reactor system is provided that includes a reaction chamber, where the reaction chamber includes a gas inlet, a water inlet, a gas and water outlet, a ground electrode and reaction electrodes, where the water inlet and the water outlet are disposed to form a water vortex in the reaction chamber when water flows there through, where the reaction electrodes include a thermal plasma electrode and a non-thermal plasma electrode, and a plasma activated water reservoir that is disposed to receive the plasma activated water from the reaction chamber and disposed to return the plasma activated water to the reaction chamber.

Systems and methods for processing fluids

A vortex reactor includes a reactor body having first and second ends, with one or more inlet ports coupled to the first end. The reactor is configured to form one or more vortices in a fluid passed into the reactor. The inlet port(s) may be positioned to advance a reactor fluid into the reactor body at an angle tangential to an inner surface of the reactor body, forming a vortex that advances toward the second end along the inner surface of the reactor body. A vortex induction mechanism can be disposed within the reactor to induce or augment a vortex within the reactor. The reactor includes an ultrasound-imparting device configured to generate cavitation bubbles in the reactor fluid. The fluid flow within the reactor concentrates the cavitation bubbles within the vortex, thereby providing beneficial physical and/or chemical effects, while protecting the reactor walls and other reactor components from cavitational erosion.

APPARATUS FOR GENERATING HYDROGEN PEROXIDE

An apparatus for the production of hydrogen peroxide. The apparatus can have a substrate consisting of a substantially triboelectrically neutral material, a catalyst disposed upon the substrate, and an energy source to provide energy for ambient oxygen and water vapor to react and form hydrogen peroxide. The apparatus does not produce any ozone as a byproduct. The apparatus produces pure hydrogen peroxide gas which is not insulated by water molecules. Further the hydrogen peroxide gas, due to the fact that it is uninsulated by water molecules, is self-regulating to a concentration of 0.03 parts per million even when continuously produced by the apparatus. 1. An apparatus for the production of hydrogen peroxide from ambient air comprising:a) a substrate consisting of a substantially triboelectrically neutral material;b) a catalyst disposed upon the substrate; andc) an energy source proximate the substrate and the catalyst; andwherein the catalyst aids formation of hydrogen peroxide without generating any ozone as a byproduct, and further wherein the hydrogen peroxide is not insulated by water molecules or generated as an aqueous vapor.2. The apparatus of claim 1 , wherein the substrate consists of:a) wool;b) a steel;c) cotton;d) paper;e) wood;f) aluminum;g) a fiberglass;h) a composite; ori) combinations thereof.3. The apparatus of claim 1 , wherein the substrate has a triboelectric affinity from −30 nC/J to 30 nC/J.4. The apparatus of claim 1 , wherein the substrate comprises projections or holes to maximize the surface area of the catalyst exposed to air.5. The apparatus of claim 1 , wherein the substrate is a three-dimensional shape encompassing a volume of air.6. The apparatus of claim 1 , wherein the substrate has a thermal conductivity of less than 1 W/Mk.7. The apparatus of claim 1 , further comprising a fan for moving ambient air across the substrate and the catalyst and/or for moving the hydrogen peroxide away from the substrate and the catalyst.8. The ...

CATALYST CONTAINING AU-PT ALLOY, METHOD FOR PREPARING THEREOF AND METHODS FOR SYNTHESIZING OF HYDROGEN PEROXIDE USING THE SAME

A catalyst, a method for preparing thereof, and methods for synthesizing of hydrogen peroxide are disclosed. The catalyst contains an alloy of two elements. Herein, the elements are Au(Aurum) and Pt(Platinum). The method for preparing the catalyst containing the Au—Pt alloy, includes steps of: (a) obtaining a first solution by dissolving dispersing agent and reducing agent into a first solvent; and (b) synthesizing the Au—Pt alloy by adding Au precursor and Pt precursor into the first solution. Herein, the step (b) includes steps of: (b-1) obtaining a second solution by dissolving the Au precursor and the Pt precursor into a second solvent; and (b-2) synthesizing the Au—Pt alloy by adding the second solution into the first solution. 1. A catalyst , containing: an alloy of two elements , wherein the elements are Au(Aurum) and Pt(Platinum).2. The catalyst of claim 1 , wherein the alloy forms solid solution.3. The catalyst of claim 1 , wherein the alloy has a face-centered tetragonal structure.4. The catalyst of claim 1 , wherein the alloy catalyzes direct synthesis reaction of hydrogen peroxide(HO).5. The catalyst of claim 1 , wherein a molecular formula of the alloy is represented as AuPt claim 1 , and wherein the X satisfies no less than 22 and no more than 97.6. The catalyst of claim 1 , wherein a molecular formula of the alloy is represented as AuPt claim 1 , and wherein the X satisfies no less than 27 and no more than 97.7. A method for preparing a catalyst containing an Au—Pt alloy claim 1 , comprising steps of:(a) obtaining a first solution by dissolving dispersing agent and reducing agent into a first solvent; and(b) synthesizing the Au—Pt alloy by adding Au precursor and Pt precursor into the first solution.8. The method of claim 7 , wherein the step (b) includes steps of:(b-1) obtaining a second solution by dissolving the Au precursor and the Pt precursor into a second solvent; and(b-2) synthesizing the Au—Pt alloy by adding the second solution into the ...

Fuel-Saving Device

A fuel-saving device includes an oxygen generator adapted for producing oxygen, an air intake component adapted for inhaling air, and a conveyor comprising an output terminal adapted for outputting gas, an oxygen terminal connected with the oxygen generator, an air terminal connected with the air intake component, and a connector connecting the output terminal, the oxygen terminal and the air terminal, so as to allow oxygen from the oxygen generator and air from the air intake component to be mixed and output through the output terminal. 1. A fuel-saving device for a combustion engine , comprising:an oxygen generator configured for producing oxygen;an air intake component, configured for inhaling air, including a filter for filtering an inhaled air;a conveyor, comprisingan output terminal, arranged for outputting gas, including an output pipeline and an output regulator arranged along said output pipeline,an oxygen terminal, connected with said oxygen generator, including an oxygen pipeline and an oxygen regulator arranged along said oxygen pipeline,an air terminal, connected with said air intake component, including an air pipeline and air regulator arranged along said air pipeline; anda connector connecting said output terminal, said oxygen terminal and said air terminal, adapted for allowing oxygen from said oxygen generator and air from said air intake component to be mixed to form a mixed gas and output through said output terminal for supplying to the combustion engine, wherein the mixed gas, the oxygen and the inhaled air passing through said output pipeline, said oxygen pipeline and said air pipeline respectively, while said output regulator, said oxygen regulator and said air regulator checking and controlling flows of the mixed gas, the oxygen and the inhaled air in said output pipeline, said oxygen pipeline and said air pipeline respectively; anda controller which is electrically connected with said output regulator, said oxygen regulator and said air ...

PLANT FOR HYDROGEN PEROXIDE PRODUCTION AND PROCESS USING IT

An autoxidation process for producing hydrogen peroxide may be performed using a plant that includes at least two skid mounted modules selected from: a skid mounted module comprising at least one hydrogenator to hydrogenate an anthraquinone in a working solution; a skid mounted module comprising at least one oxidizer to oxidize the hydrogenated anthraquinone with oxygen to form hydrogen peroxide; optionally a skid mounted module configured to compress air to feed oxygen into the at least one oxidizer of the oxidizer skid, and when said air compressor skid is present, a further skid mounted module configured to recover solvent; a skid mounted module configured to extract the hydrogen peroxide from the working solution; and a skid mounted module comprising at least one means to deliver a hydrogen peroxide solution to a point of use and/or optionally to a storage tank. 117-. (canceled)18. An autoxidation process for producing hydrogen peroxide , which is denoted as an AO-process , the process comprising the use of a plant ,wherein the plant comprises at least two skid mounted modules selected from the group consisting of:a skid mounted module comprising at least one hydrogenator to hydrogenate an anthraquinone in a working solution, denoted as hydrogenation skid 1;a skid mounted module comprising at least one oxidizer to oxidize the hydrogenated anthraquinone with oxygen to form hydrogen peroxide, denoted as oxidizer skid 2;optionally a skid mounted module configured to compress air, denoted as process air compressor skid 3, to feed oxygen into the at least one oxidizer of the oxidizer skid 2, and when said process air compressor skid 3 is present in said plant, a further skid mounted module configured to recover solvent, denoted as solvent recovery unit skid 4, when oxygen from the air is used to feed oxygen into the at least one oxidizer of said oxidizer skid 2;a skid mounted module configured to extract the hydrogen peroxide from the working solution, denoted as ...

Katalysatorbærer og fremgangsmåte for fremstilling derav.

Process and device for separating liquid from a multiphase mixture

Process and device for separating liquid from a multiphase mixture contained in a vessel and comprising solid particles and at least one liquid phase forming together at least one suspension, and a gas phase in which at least part of the mixture is circulated through at least one cross-flow filter located outside the vessel, therefore separating said part of the mixture into a filtered liquid and a concentrate.

Process and device for separating liquid from a multiphase mixture

Process and device for separating liquid from a multiphase mixture contained in a vessel and comprising solid particles and at least one liquid phase forming together at least one suspension, and a gas phase in which at least part of the mixture is circulated through at least one cross-flow filter located outside the vessel, therefore separating said part of the mixture into a filtered liquid and a concentrate.

Purification of hydrogen peroxide solution

A process for purifying a hydrogen peroxide solution is disclosed, comprising treating a 10 to 60% by weight hydrogen peroxide solution having a pH between 1.5 and 5.0 and containing anionic impurities with a hydrogencarbonate type or carbonate type anion exchange resin while adding an acid or a salt thereof having an acid dissociation constant pKa in water of not more than 5 to the hydrogen peroxide solution to be treated continuously or semi-continuously in an amount of from 0.5 to 5 milli-equivalents per liter of hydrogen peroxide solution. The hydrogen peroxide decomposing activity of the anion exchange resin can be inhibited without decreasing a rate of removal of strong acid radicals in the anionic impurities thereby minimizing oxygen evolution due to decomposition of hydrogen peroxide.

Patent DE60141404D1

Process for producing hydrogen peroxide

A method using auto-oxidation of an anthraquinone derivative in three successive steps, comprising hydrogenating the working solution (at 1), oxidizing the hydrogenated working solution (at 2), and removing hydrogen peroxide using water (at 3). The hydrogenation step is performed in such a way that a hydrogen peroxide equivalent of around 7.9 g/l is achieved at the inlet of the oxidizer (2), and the oxidation step (b) is performed in such a way that the temperature at the top of the oxidizer (2) is below about 50° C., and preferably around 35°-40° C. The method is useful for producing hydrogen peroxide in situ in a paper pulp bleaching plant.

Processo para produzir um catalisador

Method for producing hydrogen peroxide from hydrogen and oxygen

The invention relates to a method and apparatus for safely producing hydrogen peroxide by injecting dispersed minute bubbles of hydrogen and oxygen into a rapidly flowing liquid medium. The liquid medium can contain either a water-soluble organic compound, a water-insoluble organic compound, a combination of a water-insoluble organic compound with water, liquid carbon dioxide or supercritical carbon dioxide. The minute bubbles are surrounded by the liquid medium of sufficient volume for quench cooling any explosive reaction between the hydrogen and oxygen. The present invention also relates to reactors with internal catalyst structures and reactors that have a circular path, both of which may be used to produced hydrogen peroxide.

Patent DE3923034C2

Silica microspheres, method of improving attrition resistance and use

High-strength, non-agglomerated uniform porous microspheres of silica produced by spray drying a mixture comprising a colloidal silica sol and an additive selected from ammonium citrate or urea; an attrition resistant catalytic composite consisting essentially of metal crystallites such as palladium, platinum-palladium on said silica microsphere and method for preparing the same; and an improved process for making hydrogen peroxide from the direct combination of hydrogen and oxygen in the presence of said attrition resistant catalytic composite.

Process for the epoxidation of olefins

A continuous process for the epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction, whereby the aqueous reaction mixture contains i) an olefin; ii) hydrogen peroxide; iii) less than 100 wppm of alkali metals, earth alkali metals, both irrespective whether in ionic, complex or covalently bonded form, bases or cations of bases having a pk B of less than 4.5, or combinations thereof; and, iv) at least 100 wppm of bases or cations of bases having a pk B of at least 4.5 or combinations thereof, whereby the wppm are based on the total weight of hydrogen peroxide in the reaction mixture.

Aqueous hydrogen peroxide solutions and method of making same

An aqueous hydrogen peroxide solution containing i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines having a pk B of less than 4.5 or the corresponding protonated compounds in total; and iii) at least 100 wppm anions or compounds that can dissociate to form anions in total, where the wppm are based on the weight of hydrogen peroxide and the concentration of hydrogen peroxide is more than 50% by weight based on the total weight of the hydrogen peroxide solution. A process for preparation of said hydrogen peroxide solution and the use of said solution in a process for epoxidation of olefins is also disclosed.

Oxidation process and catalyst

Anthraquinone process

An improved process for producing hydrogen peroxide by the anthraquinone process, utilizing a palladium on calcined support catalyst having high attrition resistance, is provided.

A Manufacturing Method and A Manufacturing Apparatus of TrichlorosilaneSiHCl3 using the Metal Catalyst

본 발명은 고체 촉매를 사용하여 금속규소 및 사염화규소(STC)를 주원료로 사용하고 수소를 첨가하여 삼염화실란을 제조하는 방법 및 장치에 관한 것으로, 사염화규소의 재순환시키고 촉매를 사용함으로써 공정조건을 완화시키고 자원의 재활용과 제조의 효율을 향상시키는데 그 목적 및 효과가 있다. The present invention relates to a method and apparatus for producing trichlorosilane by using metal silicon and silicon tetrachloride (STC) as a main raw material and adding hydrogen using a solid catalyst. The process conditions are relieved by recycling silicon tetrachloride and using a catalyst. And the purpose and effect of improving the recycling of resources and the efficiency of manufacturing. 본 발명은 단결정실리콘, 다결정 실리콘 및 실란가스 생산에 필요한 삼염화실란(TCS, SiHCl 3 )의 제조 시에 발생되는 부산물인 사염화규소(STC, silicone tetra chlorine)를 원료로 재활용함으로써 폐기물발생을 최소화하여 효율적으로 삼염화실란을 제조하되, 보다 구체적으로, 원료로 사용되는 금속규소 입자의 크기는 50-400mesh이고, 순도는 92% 이상이며, 사염화규소의 순도는 75% 이상이며, 수소의 순도는 70% 이상의 것을 사용하며, 사염화규소탱크에 수소를 주입하여 사염화규소와 함께 기화시켜서 반응기로 주입하고, 반응기의 온도는 150℃~800℃로 유지하며, 반응기를 거쳐서 나온 반응가스를 증류탑을 통과시켜 비등점의 차이를 이용하여 삼염화실란과 사염화규소로 분리하며, 분리된 삼염화실란은 저장탱크로 이송하고, 회수된 사염화규소는 사염화규소 탱크로 보내어 재활용하도록 구성되어 있다. The present invention minimizes waste generation by minimizing waste generation by recycling silicon tetrachlorine (STC), which is a by-product generated during the production of silane trichloride (TCS, SiHCl 3 ) required for monocrystalline silicon, polycrystalline silicon and silane gas production. To prepare a trichlorosilane, more specifically, the size of the metal silicon particles used as a raw material is 50-400mesh, purity is 92% or more, silicon tetrachloride purity of 75% or more, hydrogen purity of 70% or more Inject hydrogen into the silicon tetrachloride tank, vaporize it with silicon tetrachloride and inject it into the reactor, maintain the temperature of the reactor at 150 ℃ ~ 800 ℃, and pass the reaction gas from the reactor through the distillation column to make the difference in boiling point. Separating into trichlorosilane and silicon tetrachloride by using, the separated trichlorosilane is transferred to the storage tank, and the ...

Process for preparing hydrogen peroxide from the elements

The present invention relates to a process for the preparation of hydrogen peroxide from oxygen or oxygen-delivering substances and hydrogen or hydrogen-delivering substances in the presence of at least one catalyst containing a metal-organic framework material, wherein said framework material comprises pores and a metal ion and an at least bidentate organic compound, said bidentate organic compound being coordinately bound to the metal ion. The invention further relates to a novel material consisting of said metal organic framework material wherein the material is brought in contact with at least one additional metal.

Polymer-encapsulated ion-exchange resin

Polymer-encapsulated ion-exchange resins are disclosed. The resins are useful in adsorption, catalysis, and other applications. Catalysts comprising a polymer-encapsulated combination of an ion-exchange resin and a transition metal are also disclosed. The catalysts are useful in hydrogenation, oxidation, hydroformylation, polymerization, and other valuable processes. Certain of the polymer-encapsulated catalysts enhance the productivity in the process for producing hydrogen peroxide from hydrogen and oxygen.

Chemical product and process

The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to about 30000 nm and said filler has an average equivalent particle size, measured with sedigraph method, from about 300 to about 10000 nm. The invention further concerns a method of its preparation, a slurry useful therefore, a catalyst comprising such a catalyst carrier and use of the catalyst.

Process for the preparation of hydrogen peroxide by direct synthesis

Process for the production of precious metal-containing catalysts on carbon-containing support materials

Bereitgestellt wird ein Verfahren zur Herstellung von edelmetallhaltigen Katalysatoren, die als katalytisch aktive Komponente mindestens ein Edelmetall der Platinmetallgruppe und/oder dessen Verbindungen sowie gegebenenfalls Promotoren und/oder Modifikatoren auf einem Kohlenstoff-haltigen Trägermaterial enthalten. Bei diesem Verfahren wird das Kohlenstoff-haltige Trägermaterial vor dem Aufbringen der katalytisch aktiven Edelmetall-Komponenten sowie gegebenenfalls Promotoren und/oder Modifikatoren mit Alkali- oder Erdalkalimetallsalzen organischer oder anorganischer Säuren behandelt. Die erhaltenen Katalysatoren lassen sich mit Erfolg bei der Herstellung von gegebenenfalls substituierten Cyclohexanonen durch Hydrierung der entsprechend substituierten Phenole einsetzen. A method is provided for the production of noble metal-containing catalysts which contain at least one noble metal of the platinum metal group and / or its compounds as well as optionally promoters and / or modifiers on a carbon-containing carrier material as the catalytically active component. In this process, the carbon-containing support material is treated with alkali or alkaline earth metal salts of organic or inorganic acids before the catalytically active noble metal components and optionally promoters and / or modifiers are applied. The catalysts obtained can be used successfully in the preparation of optionally substituted cyclohexanones by hydrogenation of the correspondingly substituted phenols.

有機化合物の変換反応において使用可能な担持触媒

Способ производства пероксида водорода

1. Способ производства пероксида водорода с использованием процесса АО, включающий две чередующиеся основные стадии:(а) гидрирование рабочего раствора в блоке гидрирования в присутствии катализатора, при этом указанный рабочий раствор содержит, по меньшей мере, один алкилантрахинон, растворенный, по меньшей мере, в одном органическом растворителе, с целью получения, по меньшей мере, одного соответствующего алкилантрагидрохинонового соединения; и(b) окисление указанного, по меньшей мере, одного алкилантрагидрохинонового соединения с целью получения пероксида водорода в блоке окисления; и дополнительно включающий стадию(с) экстракции пероксида водорода, образовавшегося на стадии окисления, в блоке экстракции,отличающийся тем, что стадии гидрирования, окисления и экстракции осуществляют в реакторной системе, которая спроектирована как компактная модульная система, состоящая из блока гидрирования, блока окисления и блока экстракции, при этом указанная реакторная система предназначена для функционирования без блока восстановления, в частности, без блока восстановления, предназначенного для непрерывного восстановления рабочего раствора, как мало- или среднемасштабный процесс АО с производительностью по пероксиду водорода до 20 килотонн в год, при этом рабочий раствор и/или катализатор заменяют и/или обрабатывают с целью регенерации или реактивации только периодически или время от времени.2. Способ производства пероксида водорода с использованием процесса АО по п. 1, отличающийся тем, что стадии гидрирования, окисления и экстракции проводят в почти полностью замкнутой реакторной системе, спроектированн� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2014 118 565 A (51) МПК C01B 15/023 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2014118565/05, 02.10.2012 (71) Заявитель(и): СОЛВЕЙ СА (BE) Приоритет(ы): (30) Конвенционный приоритет: 11.10.2011 EP 11184576.4 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 12 ...

Method for production of hydrogen peroxide

FIELD: chemistry. SUBSTANCE: invention relates to method and device for production of hydrogen peroxide. Method for production of hydrogen peroxide using an anthraquinone autooxidation AO process includes two alternating main stages (a) hydrogenation of working solution in a hydrogenation unit in presence of a catalyst, wherein said working solution contains at least one alkylanthraquinone, dissolved in at least one organic solvent, in order to obtain at least one corresponding alkylanthrahydroquinone compound; and (b) oxidation of said at least one alkylanthrahydroquinone compound in order to obtain hydrogen peroxide in oxidation unit; and, additionally involving stage (c) for extraction of hydrogen peroxide formed during oxidation, in an extraction unit. Stages of hydrogenation, oxidation and extraction are performed in a reactor system, which is designed as a compact modular system, consisting of a hydrogenation unit, an oxidation unit and an extraction unit, wherein said reactor system is intended for operation without a recovery (regeneration) unit, intended for continuous recovery of working solution, as low- or medium-sized AO process with hydrogen peroxide output of up to 20 kilotons a year, preferably, hydrogen peroxide output of up to 15 kilotons a year, more preferably, hydrogen peroxide output of up to 10 kilotons a year, preferably, wherein working solution and/or catalyst is replaced and/or treated for regeneration or reactivation only periodically or from time to time, for example, with low frequency. EFFECT: technical result is production of aqueous solutions of hydrogen peroxide in concentrations, intended for use in industry, simplification and reduction of scale of process. 12 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 609 474 C2 (51) МПК C01B 15/023 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2014118565, 02.10.2012 (24) Дата начала отсчета срока действия ...

制备过氧化氢的方法和系统

本发明涉及过氧化氢技术领域，具体涉及一种制备过氧化氢的方法和系统。该方法包括：(1)在加氢催化剂存在下，将含有氢气和工作液的反应液进行氢化反应，并将得到的浆液进行固液分离，得到氢化液和循环浆液，并将所述循环浆液返回加入所述反应液；(2)将所述氢化液分为A液和B液；在再生催化剂存在下，将所述A液进行再生反应，得到再生氢化液；(3)将所述B液、再生氢化液和含氧气体进行氧化反应，得到氧化液；(4)将所述氧化液进行萃取，得到过氧化氢溶液和萃余液，并将所述萃余液返回加入所述反应液。该方法基本消除反应器床层温差，有效提高氢化反应选择性、装置效率以及氢化效率，延长加氢催化剂寿命；该系统简化装置、提高安全性。

A process for the preparation of a catalyst.

Oxidation catalyst, process for its preparation and oxidation process using the oxidation catalyst

The invention concerns a titanium or vanadium silicalite-based oxidation catalyst having a zeolite structure and containing between 0.01 and 20 wt % of one or a plurality of platinum metals from the group comprising ruthenium, rhodium, palladium, osmium, iridium and platinum. The invention is characterized in that the platinum metals are each present in at least two different bond energy states and preferably do not contain any metal-to-metal bonds.

Oxidation catalyst containing lanthanoid metals, process for its preparation and oxidation process using the oxidation catalyst

An oxidation catalyst based on titanium or vanadium silicalites with zeolith structure is characterised in that it contains 0.01-20 wt % of one or more lanthanide metals from the group lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium.

Chemical product and process

본 발명은 실리카졸, 마이크로 섬유 및 충진재함유 슬러리로 함침된 섬유 종이를 포함하는 촉매 담체에 관계하며, 상기 마이크로 섬유는 Sedigraph 방법으로 측정시 200 내지 30,000 ㎚의 평균 입자크기를 가지며, 상기 충진재는 Sedigraph 방법으로 측정시 300 내지 10,000 ㎚의 평균 입자크기를 가짐을 특징으로 한다. 본 발명은 또한 촉매 담체 제조방법, 이를 위해 유용한 슬러리, 이러한 촉매 담체를 포함한 촉매 및 촉매의 용도에 관계한다. The present invention relates to a catalyst carrier comprising a fiber paper impregnated with a silica sol, microfibers and a filler-containing slurry, wherein the microfibers have an average particle size of 200 to 30,000 nm as measured by Sedigraph method, and the fillers are Sedigraph. It is characterized by having an average particle size of 300 to 10,000 nm as measured by the method. The invention also relates to methods of preparing catalyst carriers, slurries useful for this purpose, catalysts comprising such catalyst carriers and the use of catalysts.

Means and method for providing a non-freezing catalyst solution

A non-freezing catalyst solution carries a platinum group metal compound admixed with an antifreeze compound which is blocked from reaction therewith by a blocking agent. The blocking agent is selected from the group consisting of hydrogen chloride and lithium chloride. All of the materials are soluble in solution at room temperature.

Preparation method of the pd catalyst

A method for prepg. Pd-catalyst comprises (a) vacuum treating titanium oxide (10g) for 12 hr at 450 deg. C and putting them into a rotary vacuum evaporator; (b) dissolving PdCl2 (1.67-33.47mg, 0.01- 0.2wt.% in the catalyst) in IN HCL 100ml and mixing with sodium acetate 0.8g and diluting with distd. water to 1200mL; (c) adding (b) -soln. to the evaporator slowly; (d) rotating a flask for 48hr at 85 deg. C and at 10 torr; and (e) calcining for 3hr at a air-circulated furnace (500 deg. C). The catalyst is useful as a highly selective hydrogenating catalyst of acetylene in the polymg. ethylene.