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WO/1999/042214A1 |
A method of treating a catalyst support comprises introducing onto and/or into an untreated catalyst support which is partially soluble in an aqueous acid solution and/or a neutral aqueous solution, Si, Zr, Cu, Zn, Mn, Ba, Co, Ni and/or ...
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WO/1999/037398A1 |
The invention relates to a method and to the production of coreactive supporting materials and to the heterogeneous catalysts and cocatalysts produced therewith. The inventive coreactive supporting materials with an enhanced number of co...
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WO/1999/032398A1 |
The invention concerns a process of continuously producing hydrogen peroxide by direct reaction between hydrogen and oxygen in a gaseous reaction mixture in contact with a catalyst maintained in a reactor (1), wherein a gaseous reaction ...
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WO/1999/032399A1 |
The invention relates to a process for continuously producing hydrogen peroxide comprising the steps of feeding hydrogen and oxygen containing gas to a reactor (1) provided with a catalyst; contacting the hydrogen and oxygen gas (4) with...
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WO/1999/026722A2 |
The invention relates to a catalyst body (4) having a number of flow-through canals (8) arranged in a predominant direction (10). The invention should be reliably operable and require little cleaning. In addition, cracking of the catalys...
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WO/1999/025449A1 |
An activated carbon-crystalline titanium and/or tin silicate composite for purifying waste streams and method of making. The method involves providing a combination of a synthetic carbon precursor, and titanium and/or tin silicate, follo...
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WO/1999/024700A1 |
The invention relates to a catalytic converter supported body and a method for producing the same. The catalytic converter supported body is provided for an exhaust system of an internal combustion engine, especially a motor vehicle, and...
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WO/1999/001216A1 |
The invention concerns a method for treating gases to reduce nitrogen oxide emissions wherein a catalytic composition containing a catalytic phase on a support is used, characterised in that the support is based on silica and titanium ox...
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WO/1999/000526A1 |
A ferritic stainless steel alloy useful as a substrate for catalytic converter material consists of, by weight: 15-21 % Cr; 8-12 % Al; 0,01-0,09 % Ce; 0,02-0,1 % total of REM; and possible minor amounts of further elements, other than th...
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WO/1998/056499A1 |
The invention concerns alumina extrudates with properties, in particular of porosity, adapted for their use as catalyst supports or as catalysts, in particular for hydrotreating petroleum fractions. The invention also concerns methods fo...
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WO/1998/056503A1 |
The invention relates to a metallic catalyst support (1) for purifying an exhaust gas current (2), designed especially for use with a small engine. Said catalyst support (1) has a longitudinal axis (10) and a plurality of fluid flow path...
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WO/1998/048925A1 |
The invention relates to a device with an electrical heater and a heterogeneous catalyzer which is heated by said electrical heater. The heater enables the energy required for catalyzed reaction to be provided in a simple manner.
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WO/1998/032885A1 |
The invention concerns leached nanocrystalline materials having a large specific surface area particularly useful for storing hydrogen or for making electrodes for catalysis or electrocatalysis, such as those used in fuel cells. These ma...
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WO/1998/030552A1 |
Propylene is oxidized to propylene oxide in the vapor phase using oxygen and a supported catalyst comprising silver, gold, a potassium promoter such as potassium nitrate or potassium carbonate and a support comprised in whole or in subst...
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WO/1998/028074A1 |
A supported catalyst comprising a support, an anchoring agent such as a heteropoly acid or anion, and a metal complex which is useful in a wide variety of organic reactions, especially the hydrogenation of substituted $g(a), $g(b) unsatu...
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WO/1998/024535A1 |
The present invention is directed to a catalyzed metallic substrate, such as a metal plate. There is a catalyst layer supported on the substrate surface. The article is useful as part of exhaust systems which can be used with small engin...
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WO/1998/009725A1 |
This invention concerns a catalyst which, for instance, is suited for hydrogenation and consists of at least one catalytically active metal in a low-valence state on an essentially carbon substrate. This substrate consists of carbon whic...
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WO/1998/000233A1 |
The invention relates to a catalyst comprising $g(a)-aluminium oxide as the support material and copper as the active constituent, the BET surface (as defined in DIN 66131) of the aluminium oxide being not lower than 30 m?2�/g. It also...
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WO/1997/048743A1 |
Frangible, spray dried agglomerate catalyst supports are provided, e.g. of silica gel, which possess a controlled morphology of microspheroidal shape, rough, scabrous appearance, and interstitial void spaces which penetrate the agglomera...
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WO/1997/048742A1 |
The present invention relates to a novel loose aggregate catalyst support composition characterized in that the aggregate has a surface area from about 100-1000m2/g, an average particle size of from about 5-250 microns, a pore volume of ...
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WO/1997/046316A1 |
A process for the production of an alumina based catalyst carrier in which a fired carrier body is impregnated with a source of titania in a liquid medium that upon heating yields titania and then calcined to generate titania uniformly d...
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WO/1997/040932A1 |
An improved catalyst carrier is formed by a process that comprises the use of ceramic particle components with particle sizes chosen to ensure that a desired degree of porosity is obtained without recourse to the use of organic burnout m...
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WO/1997/033176A1 |
Graphitic nanotubes, which include tubular fullerenes (commonly called "buckytubes") and fibrils, which are functionalized by chemical substitution, are used as solid supports in electrogenerated chemiluminescence assays. The graphitic n...
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WO/1997/031710A1 |
A mineral fibre paper is formed to a body with fine through channels, the body being impregnated with a dispersion of a filling material, a sol and a dispersion medium. A gelating medium is provided to the body to gelate the sol so that ...
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WO/1997/019019A1 |
H2S in a process gas is oxidised to sulphur by contacting it with an oxidation catalyst consisting of at least one metal and particularly a transition metal compound, or of the corresponding elemental metal, in combination with a silicon...
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WO/1997/012670A1 |
A starting material comprising 90 to 20 % by weight of an alumina having a particle aspect ratio of 1 to 5 and 10 to 80 % by weight of an alumina powder having a particle aspect ratio of 10 to less than 10,000 is kneaded and molded, and ...
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WO/1997/005057A1 |
This invention is a HfO2-containing catalyst support material for use in high temperature catalytic processes, such as catalytic combustion, wherein the HfO2 is present in a sufficient amount to impart thermal stability on the catalyst s...
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WO/1996/038378A1 |
A gas to be desulphurized is contacted with a catalyst containing a catalytic phase associated with a silicon carbide carrier in order to conduct a sulphur-forming reaction between H2S and SO2, and, optionally, a reaction that hydrolyses...
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WO/1996/023585A1 |
This invention relates to an alkylene oxide catalyst which contains silver and one or more alkali metal promoters supported on a carrier prepared by a process which comprises mixing particulate ceramic components with from 0.5 to 50 part...
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WO/1996/023727A1 |
A process is proposed for the production of highly pure hydrotalcites by the reaction of alcohols or alcohol mixtures with at least one or several divalent metals and at least one or several trivalent metals and the hydrolysis of the alc...
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WO/1996/020787A1 |
A catalyst and process for treating gas streams which contain halogenated organic compounds, non-halogenated organic compounds, carbon monoxide or mixtures thereof, and particularly gas streams which contain organobromides. The catalyst ...
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WO/1996/017806A1 |
The invention concerns a method of catalytically treating waste water which contains halogen-organic and other organic and inorganic compounds. The waste water is treated in the presence of hydrogen on a supported noble metal catalyst, a...
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WO/1996/018059A1 |
Graphitic nanotubes, which includes tubular fullerenes (commonly called "buckytubes") and fibrils, which are functionalized by chemical substitution or by adsorption of functional moieties. More specifically the invention relates to grap...
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WO/1996/014153A1 |
A catalyst is provided which is suitable for catalysing the oxidation of carbon monoxide and hydrocarbons and reducing hazardous nitrous oxides. The catalyst comprises an oxide support selected from zirconium oxide, cerium oxide and mixt...
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WO/1996/004232A1 |
A process is disclosed for the preparation of the substantially pure compound of formula (I) comprising catalytic hydrogenation of a compound of formula (II) wherein R6 and R7 are independently selected from (i) wherein Ra and Rb are ind...
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WO/1996/004073A1 |
A catalyst, and method of preparing and using a catalyst, for the hydrodesulfurization of metal-containing heavy feedstocks, which has improved catalytic life and metals capacity. The catalyst contains Group VIB and Group VIII metals or ...
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WO/1996/002581A1 |
A process for producing an aqueous gel easily without the necessity for complicated operations and large-scale equipment, which comprises bringing an aqueous solution of a polymer having repeating units comprising cationic groups represe...
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WO/1995/033559A1 |
Advantageous titania based catalyst carriers for use in applications requiring a balance of surface area and crush strength can be obtained by using as the starting material a titania hydrate pulp with a surface area above about 200 m2/g...
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WO/1995/032053A1 |
Flexible metal foil catalyst members (1), having primary surfaces (2) and optionally corrugated regions (4), suitable for use in catalytic devices for combustion engine emission control are prepared by electrophoretic deposition using an...
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WO/1995/025129A1 |
This invention relates to catalyst supports made by spray drying an emulsion polymerizated latex and the novel supported catalysts utilizing these supports. This invention further relates to a method for forming supported catalysts by sp...
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WO/1995/023777A1 |
A method for isomerising n-olefins containing no more than 20 carbon atoms, wherein an olefin-containing feed is contacted with a catalyst based on alumina impregnated with 0.03-0.6 wt % of titanium and a metal from group III A in an amo...
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WO/1995/023118A1 |
A method for oxidatively breaking down organic compounds that have low biodegradability and are difficult to oxidise chemically in aqueous effluents, by using a water-soluble peroxide oxidant in the presence of a water-soluble iron or ma...
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WO/1995/021022A1 |
A process is disclosed for producing a zeolith-coated metallic foil, in particular shaped as a honeycomb. A steel foil with a chromium and/or aluminium content is oxidised to form a finely grained aluminium oxide surface layer. A ceramic...
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WO/1995/007139A1 |
This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported on a carrier having a crush strength of at least 2.3 kg and a settled packing density of at least about 0.48 kg/l...
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WO/1995/003121A1 |
A catalyst comprises a hydrogenation/dehydrogenation component, such as a noble metal, deposited on an acidic solid product formed by modifying a Group IVB metal oxide with an oxyanion of a Group VIB metal. An example of this catalyst is...
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WO/1995/001837A1 |
This invention relates to an epoxidation catalyst having improved selectivity stability which catalyst comprises silver, a promoting amount of alkali metal, a promoting amount of magnesium, a promoting amount of rhenium and, optionally, ...
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WO/1994/026791A1 |
Process for the production of a support containing silica and at least one component chosen among alumina and aluminium phosphate, consisting of mixing an alcohol, water, a silicon alcoholate and an acid in such conditions that the gelif...
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WO1994026790A1 |
Catalyst support containing at least two components chosen among silica, alumina and aluminium phosphate, with a specific surface of 100 to 800 m<2>/g, a crystallization temperature higher or equal to 700 DEG C, a pore volume of 1.5 to 4...
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WO/1994/026406A1 |
The invention concerns a method for the preparation of aerogels by the sub-critical drying of inorganic or organic hydrogels or lyogels, the invention using dielectric drying techniques.
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WO/1994/026412A1 |
A gas-cleaning catalytic unit for use in cleaning exhaust gases from small internal combustion engines, comprises an open mesh knitted or woven fabric (10) produced from heat-resistant metal wire and shaped to a pack of predetermined for...
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