Abstract: A catalyst for purification of exhaust gases including (1) a catalysis-promoting coating comprising a noble metal catalyst and a NOx storage component loaded onto a carrier material, wherein the NOx storage component comprises an alkali metal and, (2) a ceramic substrate for supporting the catalysis-promoting coating, wherein the ceramic substrate exhibits resistance to alkali metal migration below 1000° C. and a coefficient of thermal expansion of less than about 25×10−7/° C. (25-800° C.). A second aspect of, the invention is a process for purifying an exhaust gas from a lean burn engine involving simultaneously removing carbon monoxide, hydrocarbons and nitrogen oxides by bringing the exhaust gas from a lean burn engine into contact with the exhaust gas purifying catalyst of the present invention disclosed above.

Abstract: Provided is a hydrogenation catalyst of carbon monoxide, which is suited to the manufacture of a hydrogenation product containing target components (e.g., gasoline fuel oil components or diesel fuel oil components) at high selectivity from a gas mixture of hydrogen and carbon monoxide. This hydrogenation catalyst of carbon monoxide has a structure in which a transition metal is carried by a porous material in which 90% or more of all pores are fine pores each having a diameter of 1 to 50 nm.

Abstract: A catalytically active material useful to prepare vinyl acetate monomer from ethylene, acetic acid, and an oxygen-containing gas under fluid bed conditions comprises a porous microspheroidal support containing catalytically active palladium crystallites finely dispersed within the support. This catalyst material does not require incorporation of gold to maintain activity and selectivity. A process to produce a vinyl acetate fluid bed catalyst in which catalytically active small palladium crystallites are finely dispersed within the support comprises dispersing selected metal species within the support which have an affinity to palladium to form very fine crystallites of palladium. The affinity metal species may be dispersed by impregnation onto a preformed microspheroidal support or may be intimately incorporated within the support before impregnation with a soluble palladium species.

Abstract: The invention relates to a process for producing compositions containing a biocidal compound or adsorbent and/or catalyst compound and the compositions thereof. The invention also relates to a method for reducing or eliminating the amount of a bioactive agent or contaminant from an environment by contacting the environment with the composition of for a sufficient time to reduce or eliminate the amount of the bioactive agent or contaminant in the environment.

Abstract: A process and catalyst for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to the corresponding olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and in the presence of a catalyst. The catalyst comprises gold on a titanosilicate, preferably a microporous or mesoporous titanosilicate, such as, TS-1, TS-2, Ti-beta, Ti-ZSM-48, or Ti-MCM-41. Selectivity to the olefin oxide is high at good conversions of the olefin. The catalyst is readily regenerated, and the time between catalyst regenerations is long.

Abstract: The invention relates to catalysts containing ruthenium and at least one other metal having an atomic number in the range of from 23 to 82 prepared by (a) mixing a suspension of a ruthenium compound having a specific surface area in the range of from 50 to 300 m2/g with a solution of at least one metal compound in which at least one such metal compound contains a metal different from ruthenium and has an atomic number in the range of from 23 to 82, and (b) treating the mixture of the suspension and the solution with a reducing agent.

Abstract: It is an object of the present invention to provide an exhaust gas purifying catalyst formed as a single catalyst that has a great deal of flexibility when being assembled into an exhaust system and that is capable of executing both an NOx absorbing function and a three-way function in a desired manner. To attain the this object, an absorbent catalyst layer to which an absorbent agent such as potassium and an acid material such as zeolite are added, an absorbent agent block layer formed of zeolite, and a three-way catalyst layer to which an acid material such as phosphorus is added are bonded together on a cordierite carrier. The acid material in the absorbent catalyst layer and the absorbent agent block layer inhibit the movement of the absorbent agent to the three-way catalyst layer, and transform the absorbent agent into harmless and stable potassium phosphate even if the absorbent agent reaches the three-way catalyst.

Abstract: A catalyst for purification of exhaust gas includes a carrier, and a catalyst layer containing an alkali metal and/or an alkaline earth metal as an NOx-adsorbing component, the catalyst layer being loaded on the carrier, in which catalyst the carrier-composing material contains Si in an amount of 0.5 to 10.0% by weight as expressed as an oxide. Since the inclusion of Si can suppress the deterioration of the carrier caused by the alkali metal and/or the alkaline earth metal during the use of the catalyst, the catalyst can be used over a long period.

Abstract: A catalyst body comprising a carrier and a catalyst layer containing an alkali metal and/or an alkaline earth metal, loaded on the carrier, which catalyst further contains a substance capable of reacting with the alkali metal and/or the alkaline earth metal, dominating over the reaction between the main components of the carrier and the alkali metal and/or the alkaline earth metal. With this catalyst body, the deterioration of the carrier by the alkali metal and/or the alkaline earth metal is prevented; therefore, the catalyst body can be used over a long period of time.

Abstract: Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

Abstract: A process and catalyst for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to the corresponding olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and in the presence of a catalyst. The catalyst comprises gold on a titanosilicate, preferably a microporous or mesoporous titanosilicate, such as, TS-1, TS-2, Ti-beta, Ti-ZSM-48, or Ti-MCM-41. Selectivity to the olefin oxide is high at good conversions of the olefin. The catalyst is readily regenerated, and the time between catalyst regenerations is long.

Abstract: This invention relates to a preparation process of a catalyst which comprises a noble metal and a metal as catalysis promoter in combination with an alkali or alkaline earth metal compound, supported on the outer surface of a carrier. The preparation process comprises impregnating the carrier with a solution containing an oxidative state noble metal as the main catalyst and an oxidative state metal as catalysis promoter, reducing the oxidative state metals into the metallic state in gaseous phase with a gaseous reducing agent under certain temperature, pressure, moisture and gas concentration, then impregnating the reduced carrier with a solution of an alkali or alkaline earth metal compound. The metal components-supporting catalyst prepared by the process according to the present invention has a high surface area and exhibits high catalytic activity, which leads to increase the catalytic efficiency and life of this heterogeneous catalyst.

Abstract: Catalyst systems of the Ziegler-Natta type comprise as active constituents

Abstract: A system for treating the exhaust of an industrial process or combustion source to capture gaseous sulfur compounds which includes contacting the exhaust containing gaseous sulfur compounds with a system of: (1) a structured support coated with for example a monolith (2) a ceramic oxide containing for example TiO2 (3) a precious metal component for example Pt and optionally (4) a modifier such as Cu. The system captures the gaseous sulfur compounds. Gaseous sulfur compounds are then driven off in higher concentrations in a separate isolated lower flow stream in higher concentrations which are easier to process to less noxious or useful sulfur materials, and the catalyst/sorber regenerated. The system also removes carbon dioxide by the oxidation of the carbon monoxide to carbon dioxide.

Abstract: A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold, and cupric acetate. Use of this catalyst results in a reaction having a relatively low selectivity to carbon dioxide.

Abstract: The present invention relates to a catalyst for preparing a lactone, which is prepared by supporting a cupric compound, a zinc compound and at least one alkaline earth metal compound on the supporter. The present invention also relates to a method for preparing a lactone, which comprises a dehydrocyclization reaction of a diol under a gas phase in the presence of the aforementioned catalyst after activating said catalyst. The catalyst for preparing lactone of the present invention is quite economic because of its high activity, long lifetime and high selectivity of products.

Abstract: A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and a catalyst. The catalyst contains oxidized gold dispersed on a titanium-containing support, preferably, a support having a plurality of titanium coordination environments, for example, titanium grafted onto a titanosilicate. Selectivity to olefin oxide is high at good conversion of the olefin. The catalyst uses hydrogen efficiently and exhibits a long lifetime.

Abstract: A catalyst for purifying an exhaust gas includes amorphous and homogeneous composite oxide particles, a catalytic noble metal element, and metallic oxide particles. The metallic oxide particles interpose among the composite oxide particles to connect them with each other at least. The catalyst has good heat resistance, sulfur-poisoning resistance, and durability. The catalyst is produced as follows. A slurry is prepared by mixing an organosol with a suspension, or by mixing a solution with a suspension. The slurry is deposited on a support substrate to form a coating layer thereon. The suspension includes a precursor powder, and a solvent. The precursor powder includes the composite oxide particles, and the catalytic noble metal element. The composite oxide particles include a support component, and an NOx storage element. The solvent is free from elution of the NOx storage element. The organosol includes an organic solvent, and an oxide sol.

Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo-imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.

Abstract: A catalyst for the production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound and a small amount of a source for palladium or platinum. Additional components of the catalyst may include compounds based on cerium, molybdenum, tungsten and other such promoters. Also a process for the production of alkenylaromatics from alkylaromatics using this catalyst.

Abstract: Catalytic system for dehydrogenating ethylbenzene to styrene, containing chromium oxide, tin oxide, at least one oxide of an alkaline metal (M) and an alumina carrier, in delta or theta phase or in a mixture of delta+theta or theta+alpha or delta+theta+alpha phases, modified with silica, and characterized in that: the chromium, expressed as Cr2O3, is in a quantity of between 6 and 30% by weight; the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5% by weight; the alkaline metal, expressed as M2O, is in a quantity of between 0.4 and 3% by weight; the silica is in a quantity of between 0.08 and 3% by weight, the complement to 100 being alumina.

Abstract: A noble metal-supported article which comprises a carrier and a palladium-containing metal component supported on the carrier, which article has (A) a layer in which substantially no palladium is supported in the interior of the carrier and (B) a layer in which palladium is supported in the region from the outer surface to a depth of less than 100 &mgr;m of the carrier.

Abstract: A layered catalyst support or carrier provides a core member for carrying out non-steady state heterogeneously catalyzed processes where reaction gases and their products come in contact with a conventional catalyst applied to the carrier. The support as a carrier is made up of a large number of individually shaped particulate bodies or monolithic packings to be loaded into a reactor and maintained as a fluidized bed or a fixed bed during the non-steady state reaction and the recovery of the products. The support or carrier may consist of glass, quartz, oxides, nitrides, aluminosilicates, magnesium silicates, metals and carbon or their mixtures. Each shaped particle or monolithic packing of this core support is then completely enclosed by depositing thereon a thin protective layer of a nitride, oxide, carbide or chloride of a metal, a non-metal or a mixture thereof, which exhibits a dense, pore-free microstructure and a nonpolar surface having a very low density of acid centers.

Abstract: Compacts based on pyrogenically produced silicon dioxide and having the following physical and chemical characteristics: Outer diameter 0.8-20 mm BET surface area 30-400 m2/g Pore volume 0.5-1.3 ml/g Breaking strength 10-250N Composition >99.8 wt. % SiO2 Other constituents <0.2 wt. % Abrasion <5 wt. % Apparent weight 350-750 g/l are produced in that pyrogenically produced silicon dioxide is homogenized with methyl cellulose, microwax and polyethylene glycol with addition of water, dried at a temperature of 80-150° C. and comminuted to a powder, optionally the powder is compressed into compacts, and heat-treated at a temperature of 400 to 1200° C. for a time of 0.5 to 8 hours. These compacts can be used as catalysts or catalyst carriers in vinyl acetate monomer production and ethylene hydration.

Abstract: A catalyst comprising, in its active composition, from 0.05 to 1.0% by weight of at least one metal or compound of a metal of the 10th group of the Periodic Table of the Elements and from 0.05 to 1.0% by weight of at least one metal or compound of a metal of the 11th group of the Periodic Table of the Elements, with the weight ratio of the metal of the 11th group to the metal of the 10th group being from 0.95 to 1.05, and, as support, an SiO2-containing catalyst support having a BET surface area of from 2 to 400 m2/g, wherein at least 20% of the total pore volume of the catalyst is made up by pores having a diameter greater than 100 nanometers, can be used in processes for removing alkynes, dienes and/or monounsaturated hydrocarbons from streams of materials.

Abstract: A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.

Abstract: A catalyst for the production of alkenylaromatics from alkylaromatics, wherein the catalyst is predominantly iron oxide, an alkali metal compound and less than about 100 ppm of a source for a noble metal, such as palladium, platinum, ruthenium, rhenium, osmium, rhodium or iridium. Additional components of the catalyst may include compounds based on cerium, molybdenum, tungsten and other such promoters. Also a process for the production of alkenylaromatics from alkylaromatics using this catalyst.

Abstract: Oxychlorination catalyst is produced by mixing together wet support material, copper chloride or precursor thereof, to form a paste, wherein the wet support material is wet clay, wet silica, wet silica gel, wet alumina, wet diatomaceous earth, or a mixture of two or more thereof; removing water from the paste to produce a substantially dry mixture; and calcining the substantially dry mixture at elevated temperatures to produce a calcined mixture wherein alkali metal chloride or precursor thereof is mixed with the wet support material or an aqueous solution of alkali metal chloride or precursor thereof is applied to the paste, the substantially dry mixture, or the calcined mixture and the water of the aqueous solution is substantially removed. Preferably wet attapulgus clay, cupric chloride, and potassium chloride are mixed to form the paste.

Abstract: A catalyst for producing acrolein by oxidizing ethane contains silicon, iron, an alkali metal, and oxygen. A method for producing acrolein includes the step of oxidizing ethane in the presence of the catalyst and a method for producing the catalyst includes the steps of mixing porous silicon oxide with an iron compound and an alkali metal compound and calcining the resultant mixture.

Abstract: A catalyst for the production of ethylene oxide is formed by causing a carrier having .alpha.-alumina as a main component thereof to incorporate therein silica and a metal or a compound of at least one element selected from the elements of the groups Ib and IIb in the periodic table of the elements such as, for example, silver oxide and depositing silver on the carrier. The carrier is obtained by mixing at least .alpha.-alumina, a silicon compound, an organic binder, and a compound of at least one element selected from the elements of the groups Ib and IIb in the periodical table of the elements and then calcining the resultant mixture at a temperature in the range of 1,000.degree.-1,800.degree. C.

Abstract: The present invention relates to an alloy catalyst for purifying an exhaust gas, and particularly provides an alloy catalyst excellent in nitrogen oxide purification characteristics in the lean region by improving the catalytic activity by coating first catalytic metal particles with a second metal coagulated phase, and a process for producing the same, the alloy catalyst for purifying an exhaust gas having a structure in which metal coagulated phases being applied to and supported by a metal oxide, and comprising first catalytic metal particles having an average particle size of up to 30 nm, and a second metal coagulated phase containing at least one metal, differing from the catalytic metal particles, and applying to the first catalytic metal particles at a coating ratio of at least 45%, and the process for producing an alloy catalyst for purifying an exhaust gas, comprising the steps of allowing first catalytic metal particles having an average particle size of up to 30 nm to adhere onto a metal oxide, and

Abstract: An accelerator system for the cold crosslinking of polymers which harden on exposure to moisture by hydrolysis/condensation, comprising: (C) x parts by weight of a catalyst for crosslinking the said polymers by polycondensation, x ranging from 0.01 to 10; (E) Y parts by weight of a solid inorganic compound containing an amount y of water in the form of water of hydration and/or water adsorbed by capillary condensation, this amount y ranging from 0.5 to 40 parts by weight, and which can represent up to 70% of the weight of the said solid inorganic compound; (F) z parts by weight of fillers, z ranging from 0 to 50; (D) 100-(x+Y+z) parts by weight of a diluent or of a solvent of the said catalyst (C), the diluent or solvent having a dynamic viscosity at 25.degree. C. of the order of 50 to 200,000 mPa.s; the respective amounts of the four constituents (C), (E), (F) and (D) being such that the system obtained exists in the form of a manipulable paste.

Abstract: The invention provides a catalyst for partial oxidation of hydrocarbon in the presence of a reducing compound, the catalyst comprising ultra-fine gold particles immobilized on a titanium-containing oxide, and a process for preparing an oxygen-containing organic compound, the process comprising the step of oxidizing hydrocarbon with oxygen in the presence of the above catalyst and a reducing compound.

Abstract: The present invention relates to amorphous microporous mixed oxides, characterized by having, in dried form, a narrow pore size distribution (half width <.+-.10% of the pore diameter) of micropores with diameters in the range of <3 nm and a total surface area of between 20 and 1000 m.sup.2 /g, containing a fraction of from 0.1 to 20% by weight of non-hydrolyzable organic groups, and to a process for the preparation of such oxides.

Abstract: A silver catalyst excelling in catalytic performance and permitting production of ethylene oxide with a high selectivity for a long time, a method for the production of ethylene oxide by the use of the silver catalyst, and a method for ideal manufacture of the silver catalyst are disclosed. The silver catalyst is formed by depositing silver on a carrier having .alpha.-alumina as a main component and used for the production of ethylene oxide, which carrier of the silver catalyst has undergone the following treatment capable of yielding a wash exhibiting a resistivity index of not less than 10,000 .OMEGA..multidot.cm (25.degree. C.):(Method of treatment)In a conical beaker having an inner volume of 500 ml, 300 ml of the carrier is placed, dried therein at 120.degree. C. for two hours, and boiled in conjunction with (water absorption +220) ml of pure water added thereto under normal pressure at 90.degree. C.

Abstract: A reaction mixture in a gas form which is obtained by intramolecular dehydration of glycol ether in a gas phase is liquidized and collected by using as a collecting agent the glycol ether which is a raw material of the reaction mixture. The collected liquid thus obtained is continuously distilled by using a continuous distillation column so that a distillate containing alkyl vinyl ether and water is obtained, while a bottom product containing glycol ether is obtained. The distillate is left to stand in a separation vessel whereby separating into an oleaginous layer and an aqueous layer, so that alkyl vinyl ether is collected as the oleaginous layer. On the other hand, in the case where the bottom product contains water, the bottom product is continuously distilled together with an azeotrope former by using a continuous distillation column whereby a distillate containing an azeotrope of water and the azeotrope former, so that glycol ether is collected as a bottom product.

Abstract: A high heat-resistant catalyst support comprises an amorphous composite oxide which is constituted by:(i) an NOx storage component comprising an oxide of at least one element selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements,(ii) alumina (Al.sub.2 O.sub.3); and(iii) at least one element selected from the group consisting of titania (TiO.sub.2), zirconia (ZrO.sub.2) and silica (SiO.sub.2).Furthermore, TiO.sub.2, ZrO.sub.2 and SiO.sub.2 are acidic, and at least one element selected from the group consisting of TiO.sub.2, ZrO.sub.2 and SiO.sub.2 is highly dispersed to form composite. So, SOx having acidity is prevented from approaching the NOx storage component, and sulfur poisoning is prevented. Moreover, bonding force of the NOx storage component to the catalyst support strengthens, and the NOx storage component is prevented from being scattered.

Abstract: The present invention provides a methanol reforming catalyst having the following general formula on a dry basis:X.sub.a Y.sub.b Z.sub.c O.sub.d, whereinX is a metal selected from the group consisting of zinc, cadmium, mercury, rubidium, cesium, silver, and combinations thereof, Y is a metal selected from the group consisting of beryllium, magnesium, calcium, strontium, barium, and combinations thereof, Z is a material selected from the group consisting of boron, silicon, aluminum, silicoaluminate, zirconium, titanium, hafnium, gallium, lanthanum, scandium, and yttrium, and combinations thereof, and O is the element of oxygen. The claimed methanol reforming catalyst contains neither copper oxide nor chromium oxide.

Abstract: A partially-oxidizing catalyst for hydrocarbon contains gold, titanium oxide and a carrier whose specific surface area is not less than 50 m.sup.2 /g. The carrier is preferably made from silicon oxide and/or aluminum oxide. The content of gold in the catalyst is preferably set in the range of 0.005 to 5% by weight. Further, another partially-oxidizing catalyst for a hydrocarbon contains gold, a titanium-containing metal oxide, and at least one element selected from the group consisting of an alkaline metal, an alkaline-earth metal and thallium. With these compositions, it becomes possible to provide a partially-oxidizing catalyst for a hydrocarbon having superior activity and selectivity in partially oxidizing the hydrocarbon in the presence of hydrogen and oxygen. Moreover, a partially-oxidizing method for a hydrocarbon is used for partially oxidizing the hydrocarbon by using any of the above-mentioned partially-oxidizing catalysts in the presence of hydrogen and oxygen.

Abstract: An improved process for producing high activity and high selectivity supported palladium-gold catalysts is provided. The process involves calcining the support impregnated with a palladium salt and gold salt in a non-reducing atmosphere and at a temperature ranging from 100.degree. C. to 600.degree. C. prior to reducing the metals. Catalysts of the invention are useful for the production of vinyl acetate in the vapor phase by reaction of ethylene, acetic acid and oxygen.

Abstract: The present invention relates to a photocatalyst for producing hydrogen, harmless to the environment and by which a large quantity of hydrogen is efficiently produced at low temperatures without using any organic promoter, represented by the following formula:Cs(a)X(c)/T(b)wherein "a" represents a percentage by weight of impregnated Cs on the basis of the weight of a carrier, being limited up to 6.0; "X" is a promoter selected from Ni, Co and Fe; "c" represents a percentage by weight of the promoter on the basis of the total weight of Cs and the promoter, being limited up to 50.0; "T" is the carrier consisting of a zinc sulfide mixture comprising an inorganic compound and zinc sulfide with the molar ratio of zinc:sulfur ranging from 1:0.1 to 1:2.8; and "b" represents a percentage by weight of the inorganic compound on the basis of the total amount of the ZnS mixture, being limited up to 50.

Abstract: An oxidation catalyst based on titanium silicalites or vanadium silicalites having a zeolite structure and containing from 0.01 to 30% by weight of one or more noble metals selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, platinum, rhenium, gold and silver has been molded by a compacting shaping process.This oxidation catalyst is used for the preparation of epoxides, in particular propylene oxide, from olefins, hydrogen and oxygen.

Abstract: Catalytic system for dehydrogenating ethylbenzene to styrene, containing chromium oxide, tin oxide, at least one oxide of an alkaline metal (M) and an alumina carrier, in delta or theta phase or in a mixture of delta+theta or theta+alpha or delta+theta+alpha phases, modified with silica, and characterized in that:the chromium, expressed as Cr.sub.2 O.sub.3, is in a quantity of between 6 and 30% by weight;the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5% by weight;the alkaline metal, expressed as M.sub.2 O, is in a quantity of between 0.4 and 3% by weight,the silica is in a quantity of between 0.08 and 3% by weight, the complement to 100 being alumina.

Abstract: In a process for preparing N-alkenylcarboxamides by dehydration of N-(2-hydroxyalkyl)carboxamides and/or diethers thereof in the presence of a catalyst, molecular sieves, in particular zeolites, are used as catalyst.

Abstract: A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited metallic copper in a zone surrounded by deposits of catalytically effective amounts of metallic palladium and gold, neither of which is substantially intermingled with said copper. Methods for preparing the catalyst and for synthesizing vinyl acetate utilizing the catalyst are also disclosed.

Abstract: A process and catalyst for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and a catalyst. The catalyst comprises gold on a support of titanium dispersed on silica. The titanium phase is disorganized and substantially free of crystalline titanium dioxide, as determined by analytical methods, such as, high resolution transmission electron microscopy and Raman spectroscopy. Selectivity to olefin oxide is high at good conversions of the olefin. The time between catalyst regenerations is long, and the catalyst is readily regenerated.

Abstract: The invention relates to a method of producing hydrogen peroxide by direct reaction between hydrogen and oxygen in an aqueous reaction medium, in which method hydrogen and oxygen are contacted with a catalyst suspended into the reaction medium, and the catalyst is a catalytically active surface material deposited on a support of porous silica, alumina or non-fluorinated carbon having a BET surface less than about 150 m.sup.2 /g, wherein pores with a diameter exceeding about 10 nm constitute more than about 50% of the total pore volume. The invention also relates to a catalyst useful in the claimed method.

Abstract: Disclosed is a process for the preparation of pyridine bases by a reaction of an aliphatic aldehyde and/or ketone with ammonia under gaseous phase using a specified catalyst in which a specified metal or combined metals are carried in or onto specified zeolites, for example, such as zeolites having a specified specific density range.

Abstract: An SiO.sub.2 -free, .alpha.Al.sub.2 O.sub.3 -containing catalyst support in the form of a hollow body in which at least part of the outer walls of the hollow body is open can be used to produce a catalyst for dehydrocyanation reactions.

Abstract: A high-activity hydrogen peroxide decomposition catalyst comprising an impregnated and calcined substrate with a catalyst mixture. The catalyst mixture comprises a hydrogen peroxide catalytically active compound containing a transition metal cation mixed with an alkaline promoter. A process for forming a high-activity hydrogen peroxide decomposition catalyst and a product of high-activity hydrogen peroxide decomposition are disclosed.