Abstract: A precleaner for engine air filtration includes a housing, separator tubes for inducing cyclonic airflow, and channel arrangements in airflow communication with the separator tubes to channel airflow and particulates toward a dust outlet arrangement.

Abstract: Surface modified filter media, including surface modified filter media having enhanced performance characteristics, are provided. In some embodiments, a filter media may comprise two or more layers designed to enhance fluid separation efficiency. One or more of the layers may have at least a portion of a surface that is modified to alter and/or enhance the wettability of the surface with respect to a particular fluid. In certain embodiments involving a filter media including more than one surface modified layer, at least one surface modified layer may have a greater air permeability and/or mean flow pore size than that of another surface modified layer. Such a configuration of layers may result in the media having enhanced fluid separation properties compared to filter media that do not include such modified layers or configuration of layers, all other factors being equal. The filter media may be well-suited for a variety of applications, including filtering fuel, air, and lube oil.

Abstract: An object of the present invention is to provide a low pressure-loss type of filter which has a high dust collecting capability and suppresses the lowering of the dust collecting capability even after cleaning. The present invention relates to an electret-treated sheet including at least a surface layer, a high dielectric layer and a back-surface layer, while having the high dielectric layer between the surface layer and the back-surface layer, wherein the surface layer and the back-surface layer are each a thermoplastic resin film having a relative dielectric constant of smaller than 6 at 100 kHz; the high dielectric layer is a material having a relative dielectric constant of 6 or larger at 100 kHz; and the surface layer and the back-surface layer each have a static charge due to electrostatically charge; and to a filter using the same.

Abstract: An object of the present invention is to provide a dust collector including a pulse jet type dust removal mechanism capable of uniformly removing dust over the entire length of a cylindrical filter without increasing the pressure loss of the cylindrical filter; and a dust removal method for such a dust collector.

Abstract: Aspects herein include filter systems including short-range wireless tracking features to detect insertion and/or removal of filter elements from filter systems. In an embodiment, a filtration system is included having a housing including a fluid inlet and a fluid outlet. The housing can define an internal volume. A first filter element can be removably disposed within the housing. A short-range wireless communication tag can be associated with the first filter element. A short-range wireless communication reader can be associated with the housing, the reader configured to wirelessly send data to and receive data from the tag when the reader and the tag are at a distance that is less than or equal to a maximum communication distance. Removal of the first filter element from the housing can cause the distance between the tag and the reader to exceed the maximum communication distance. Other embodiments are also included herein.

Abstract: A fabric material composite construction, for use as a filter means or media, characterized in that said construction comprises a combination of one or more nanofiber layers and a synthetic single-thread squarely knitted precision fabric.

Abstract: The present invention relates to a novel integrated system for providing nitrogen (N2) to a variety of industrial service applications such as, for example, process unit drying, pipeline purging, reactor cooling, vessel inerting, pipeline displacement.

Abstract: Methods and systems for removing water vapor from a feed gas prior to further processing the feed gas according to a downstream PSA process are described. The feed gas can include CO2 and/or CO and/or H2 and the PSA process can be used to separate components of the feed gas from one another, for instance, for CO2 capture. Light product off of the PSA process is utilized to regenerate desiccant of a dryer used in the water vapor removal process that is carried out prior to the feed gas entering the PSA process. The water vapor removal process can be heated by providing thermal energy directly to the dryer and/or to a regenerating stream that regenerates the desiccant of the dryer. The thermal energy can be low cost energy—for instance, waste heat off of a system that provides the feed gas.

Abstract: A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.

Abstract: A device for cleaning air laden with CO2 present in an enclosed space, including at least one adsorption device for adsorbing CO2 from the air supplied to the adsorption device, a desorption device associated with the adsorption device for desorbing adsorbed CO2, and a removal device for removing the desorbed CO2.

Abstract: An apparatus for extracting water from ambient air is disclosed comprising an air duct for the process air, an air duct for the regeneration air and a sorption exchanger moving at least partially between the two air ducts. Additionally, in the air duct for the regeneration air, on the side facing the sorption exchanger outlet, a cooler is installed, and on the side facing its inlet, a heater is installed. The apparatus also comprises a closed refrigerant circuit. The cooler for cooling the regeneration air is a refrigerant evaporator and this cooler is, by the refrigerant piping via a compressor for the evaporated refrigerant suction and compression, connected to the regeneration air heater, where this heater for heating the regeneration air is a condenser for condensing the refrigerant vapor. The apparatus also comprises a subcooler for additional heat removal from the refrigerant.

Abstract: The device for producing and treating a gas stream (F) includes an exchange enclosure (2) having at least a first discharge opening (2b) for a gas stream, means (3; 4) for supplying the enclosure with a liquid (L), means (3; 5) for discharging the liquid (L) contained in the exchange enclosure (2) and aeraulic means (6), which make it possible, during operation, to create, by means of suction or blowing, an incoming gas stream (F) coming from outside the exchange enclosure (2), so that said incoming gas stream (F) is introduced into the volume of liquid (V) contained in the exchange enclosure (2), and an outgoing gas stream (F?), treated by direct contact with said volume of liquid, rises inside the exchange enclosure and is discharged out of the exchange enclosure (2) through the discharge opening (2b).

Abstract: A chemical processing system for removing carbon dioxide from a gas mixture using a multicomponent amine-based scrubbing solution includes a spectroscopic evaluation system with a liquid contact probe for spectroscopic investigation, an energy source connected with the liquid contact probe to provide the spectroscopic stimulation energy to the probe, a spectrometer connected with the liquid contact probe to detect the spectroscopic response energy to the probe and to output spectral data corresponding to the spectroscopic response energy, and a machine learning spectral data analyzer connected to the spectrometer for evaluation of the spectral data to determine a concentration value for each of water, amine component and captured carbon dioxide in the scrubbing solution, the machine learning spectral data analyzer being trained for each such component over a corresponding trained concentration range, and optionally over a trained temperature range to provide a temperature-compensated concentration value.

Abstract: A device for exchange of water molecule and temperature between two fluids. The device comprises thin molecular sieve membrane sheets that allow water molecules to permeate through while blocking cross-over of the exchanging fluids. The device provides two sets of flow channels having a hydraulic diameter ranged from 0.5 to 2.0 mm for respective process and sweep fluid flows. The two sets of the channels are separated by a membrane sheet having a thickness less than 200 ?m. The thin molecule sieve membrane may be prepared by forming an ultra-thin zeolite membrane layer on a porous metal-based support sheet which provides very high water permeance so that the exchange can be conducted in a compact membrane module at high throughput. The device can be used to remove water from a process stream of higher water content by use of a sweep fluid of lower water content or higher water affinity.

Abstract: A modulator assembly may include a modulator tube, a magnetic end cap, a desiccant bag, and at least one magnet. The desiccant bag houses a plurality of desiccant beads and is disposed within the modulator tube. The at least one magnet is disposed in the desiccant bag and engages the magnetic end cap to position the desiccant bag against the end cap.

Abstract: Ionization systems and methods include moving air into contact with one or more ion generators and then past an ozone removal assembly to remove at least some ozone from the air. The air may be moved by a fan and may be filtered before contacting the one or more ion generators. The amount of one or more of the following of the air may be measured: the amount of ions, particulates, temperature, humidity, and other relevant factors. The ionization amount may be adjusted based on one or more of the measured amounts. The one or more ion generators and ozone removal assembly may be constructed as part of a single unit so they can be removed and replaced easily.

Abstract: Ionization systems and methods include moving air into contact with one or more ion generators and then past an ozone removal assembly to remove at least some ozone from the air. The air may be moved by a fan and may be filtered before contacting the one or more ion generators. The amount of one or more of the following of the air may be measured: the amount of ions, particulates, temperature, humidity, and other relevant factors. The ionization amount may be adjusted based on one or more of the measured amounts. The one or more ion generators and ozone removal assembly may be constructed as part of a single unit so they can be removed and replaced easily.

Abstract: A method and a system capable of removing carbon dioxide directly from ambient air, and obtaining relatively pure CO2. The method comprises the steps of generating usable and process heat from a primary production process, applying the process heat from said primary process to co-generate substantially saturated steam, alternately repeatedly exposing a sorbent to removal and to capture regeneration system phases, wherein said sorbent is alternately exposed to a flow of ambient air during said removal phase, to sorb, and therefore remove, carbon dioxide from said ambient air, and to a flow of the process steam during the regeneration and capture phase, to remove the sorbed carbon dioxide, thus regenerating such sorbent, and capturing in relatively pure form the removed carbon dioxide.

Abstract: A reductant insertion system for inserting reductant into an aftertreatment system via a reductant injector comprises a reductant insertion assembly comprising a pump operatively coupled to the reductant injector via a reductant delivery line. A compressed gas source is operatively coupled to the reductant injector and provides a compressed gas to the reductant injector for gas assisted delivery of the reductant. A controller is operatively coupled to the compressed gas source and the reductant insertion assembly and configured to determine whether there is a reductant demand for the reductant. In response to there being no reductant demand, the controller stops the pump and activates the compressed gas source for a predetermined time so as to provide compressed gas to the reductant injector at a pressure sufficient to force reductant contained in the reductant injector upstream towards the reductant insertion assembly via the reductant delivery line while the pump is stopped.

Abstract: A desalination system includes a feed pump having an inlet side and an outlet side. In addition, the system includes a first RO stage having an inlet, RO permeate outlet and RO concentrate outlet. Further, the system includes a second RO stage having an inlet, RO permeate outlet and RO concentrate outlet and an NF stage having an inlet, NF permeate outlet and an NF concentrate outlet. The system also includes a set of conduits adapted to connect: (a) the outlet side of the feed pump to the inlet of the first RO stage; (b) the concentrate outlet of the first RO stage to (i) the inlet of the second RO stage and to the inlet of the NF stage; and (c) the permeate outlet of the first RO stage, the permeate outlet of the second RO stage and the permeate outlet of the NF stage either directly or indirectly to a low salinity water injection line.

Abstract: The invention provides a water-alcohol separation system and a method for water-alcohol separation for producing a high purity alcohol while achieving energy saving as the whole process. Namely, a water-alcohol separation system including plural separation membrane modules connected in series, a vacuum apparatus for reducing a pressure at a permeated side of each of the separation membrane modules, and a condenser for condensing a vapor that has passed through a membrane, in which plural independent vacuum systems reduce the pressure at the permeated side of the membrane of the separation membrane modules.

Abstract: A gas sparger produces an intermittent flow of bubbles even if provided with a continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for use with a commercial membrane module can comprise a plurality of smaller units.

Abstract: A method of synthesis for an aluminophosphate-based zeolite membrane includes a steps of preparing a mixed solution with a pH greater than or equal to 6 and less than or equal to 9 by mixing an acidic phosphorous source with an alkali source, a steps of preparing a starting material solution by adding and mixing an aluminum source to the prepared mixed solution, and a steps of synthesizing an aluminophosphate-based zeolite membrane by hydrothermally synthesizing the starting material solution.

Abstract: A method for manufacturing a zeolite membrane structure comprises an immersion step for immersing a porous substrate in a synthetic sol, and a synthesis step for hydrothermally synthesizing a zeolite membrane on a surface of the porous substrate that has been immersed in the synthesis so. When the foamability of the synthetic sol is measured by a Ross-Miles method under a condition of 25 degrees C., the foam height after elapse of 5 minutes from completion of down flow is less than or equal to 5 mm.

Abstract: A composite membrane including a porous support and a thin film layer comprising a reaction product of: i) a polymer comprising a sub-unit including a Troger's base moiety represented by Formula I: wherein L includes an arylene group substituted with at least one carboxylic acid or a corresponding salt or ester group, or a hydroxyl; and ii) a crosslinking agent selected from at least one of: a) a multifunctional epoxy compound and b) a multifunctional azide compound.

Abstract: A peak intensity of a (002) plane is greater than or equal to 0.5 times a peak intensity of a (100) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of the ERI membrane.

Abstract: Provided is a water treatment membrane including: a porous support; and a polyamide active layer provided on the porous support, in which the polyamide active layer includes one or more units selected from among a unit of Chemical Formula 1: a unit of Chemical Formula 2; a unit of Chemical Formula 3; and a unit of Chemical Formula 4; and a manufacturing method thereof.

Abstract: A mixing device for mixing exhaust gas from a combustion engine of a vehicle with a solution for lowering the content of nitrogen oxides in the exhaust gas includes a casing with an exhaust inlet, an exhaust outlet, and a corner region in which an exhaust gas flow is diverted toward the exhaust outlet. The corner region has an opening for a dosing unit. A flow guide is arranged within the casing. The flow guide is configured to divide a total of the exhaust gas flow into a first exhaust gas stream and a second exhaust gas stream. A gap for the second exhaust gas stream is formed between the flow guide and a side wall of the casing. In the side wall the opening for the dosing unit is located. An end region of the flow guide is arranged upstream of the opening for the dosing unit.

Abstract: A domestic beverage carbonator for carbonating a liquid in a bottle comprising temperature and pressure sensors that communicate with processor to improve the carbonation process. The device further comprises a CO2 cylinder coupling and a cylinder discharge valve, an exhaust valve, a fill head and a user interface. The user interface further comprises user controls and a graphic display and the fill head has a pressure sensor to sense a pressure in the attached bottle and communicate a pressure signal to the processor and the processor uses the pressure signal to regulate the cylinder valve and the exhaust valve.

Abstract: A valve comprising a valve spindle housing located in the side of the chamber and including a first fluid inlet and a first fluid outlet, and a cylinder open along a portion of a longitudinal axis of the cylinder and rotatably mounted in the valve spindle housing. The cylinder is positioned in one position so that the cylinder completely obstructs the valve spindle housing outlet, not allowing any fluid to pass around the cylinder. The cylinder walls are solid except for having openings through a portion of the cylinder, so that when rotated to a closed position, the solid portion of the cylinder fully obstructs the valve spindle housing outlet, and when rotated to an open position, the first fluid can pass into the inside of the cylinder and then through the openings and out of the valve spindle housing.

Abstract: A cutting edge for agricultural use provides opposed cutting edges arranged to be rotationally symmetric about an axis so that the cutting edge may be reversed in the field to repair or replace the cutting edge without the need for separate spare parts. In some embodiments a support plate may provide a ledge stop supporting the unused cutting edge to absorb impact shocks without cutting edge damage.

Abstract: A mixer unit comprising a mixing chamber comprising a de-agglomerator with a de-agglomeration shaft with de-agglomeration means, a mixer with a mixer shaft with two or more mixing paddles, arranged for mixing and impelling particles and powders in an upstream direction towards the de-agglomerator wherein said de-agglomeration shaft is arranged above, and in parallel with said mixer shaft, so that all particles will be impelled towards the de-agglomerator, each time particles are lifted. Further said mixing chamber comprising a first portion of said mixing chamber having an inner profile adjacent and curved about an upper part of said de-agglomerator and arranged to guide particles and powders impelled by said mixing paddles over said de-agglomeration shaft and into a liquid spray.

Abstract: The invention refers to a flow-promoting device (100; 100; 100?) for performing a biological or chemical transformation, or physical or chemical trapping from, or release of agents to, a fluidic medium. The flow-promoting device (100; 100; 100?) comprises a ferromagnetic material (5) and a retaining structure (1; 1; 1?), the retaining structure having a compartment (9; 9?) defined by a permeable material (11; 11?). The retaining structure (1; 1; 1?) comprises a top wall (3; 3?) and a circumferential side wall (4; 4?), wherein the top wall (3; 3?) and the circumferential side wall (4; 4?) is formed mainly by said permeable material (11; 11?). The compartment (9; 9?) of the retaining structure (1; 1; 1?) is arranged to contain at least one fluid-permeable solid reaction member.

Abstract: A preparation vessel, in particular for a food processor, has a vessel wall and a preparation area surrounded by the vessel wall. The vessel wall has a cooling device that contacts the vessel wall in a heat-conducting manner for cooling a preparation item present in the preparation area. The vessel wall in at least a partial area has a double-walled design, with an inner wall bordering the preparation area and an outer wall that is formed separately from the inner wall and spaced apart from the inner wall by a gap, wherein the gap has the cooling device and a phase change material located between the cooling device and the outer wall as viewed in a direction from the preparation area to the outer wall.

Abstract: The present disclosure relates to fluidized-bed boilers and methods for controlling bed agglomeration that can occur when biomass containing high amounts of phosphorus is used as fuel. Iron-containing compounds, such as iron oxide, are added to the fluidized bed to tie up the phosphorus in a form that will not react under typical operating conditions for fluidized-bed boilers.

Abstract: Embodiments of the invention relate to an injection device configured to atomize a liquid into droplets using a gas, comprising a body comprising walls defining a recess, a liquid inlet orifice being formed laterally in said walls, and a gas injection assembly in which there is formed a passage for the circulation of gas between a gas inlet orifice at one end of the recess and a gas outlet orifice situated inside the recess, this assembly defining, with the walls of the body, a space for the circulation of liquid from the liquid inlet orifice to the constriction, and wherein the walls of the body define a constriction having a throat, downstream of the gas outlet orifice, and the injection device is arranged in such a way that the stream of gas at the outlet orifice covers a wall portion in close proximity to the throat.

Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.

Abstract: A reaction device is provided with a first wall that defines an interior in which a stirring mechanism is located. A heat exchanger is at least partly provided on the first outer wall surface facing away from the interior and/or on the stirring mechanism, wherein the heat exchanger has a grate structure, and at least two layers are provided which have a grate structure. Thus, it is possible to transfer heat in a precise and efficient manner primarily by means of thermal radiation in endothermic processes at different temperature levels, in particular pyrolysis, gassing, and reforming processes, and thereby use the exhaust heat for other processes.

Abstract: Fiducial markers are provided on patterned arrays of the type that may be used for molecular analysis, such as sequencing. The fiducials may have configurations that enhance their detection in image or detection data, that facilitate or improve processing, that provide encoding of useful information, and so forth. Examples of the fiducials may include an “always on” type that respond to multiple frequencies of radiation used during processing and detection so as to return signals during successive cycles of imaging.

Abstract: A semiconductor quantum dot is provided with a non-metallic substrate, and has a particle size ranged from 0.3 to 100 nm. A method of carrying out a chemical reaction or a photoluminescence reaction by using the semiconductor quantum dot is also provided. A redox reaction of a target sample is carried out, an active substance is generated, or an electron-hole pair is produced from the semiconductor quantum dot by providing the semiconductor quantum dot with a predetermined energy. Photons are released by the combination of the electron-hole pair so as to perform the photoluminescence reaction.

Abstract: A solid sorbent composition including as chemical components: calcium oxide, calcium aluminate, and a mixed metal oxide characterized by a perovskite crystalline structure. The solid sorbent finds utility in capturing carbon dioxide from any gaseous stream containing carbon dioxide, such as emissions streams produced in combustion processes or streams derived from closed environments including airplanes, spaceships, and submarines. A reversible carbon dioxide looping process is disclosed involving (a) contacting a carbon dioxide-containing gaseous stream with the solid sorbent composition in a carbonator to produce a solid mixture containing calcium carbonate and a gaseous stream reduced in carbon dioxide concentration; and (b) heating the solid mixture containing calcium carbonate in a calcinator (decarbonator) to regenerate the solid sorbent composition and to produce a gaseous stream enriched in carbon dioxide.

Abstract: Provided is a water-absorbing resin that exhibits excellent absorption performance and a high permeation rate with respect to liquids to be absorbed, and that effectively reduces liquid leakages, even in an absorbent body using a large amount of the water-absorbing resin. The water-absorbing resin is formed from a polymer of a water-soluble ethylenically unsaturated monomer, and when a cross-sectional image of the water-absorbing resin obtained by X-ray computer tomography is observed, the ratio (cavity area ratio) as calculated by formula (I) of the area of cavity portions in the cross-sectional image is 2-10%. The liquid flow rate index as calculated by formula (II) when a physiological saline liquid column flow rate test is performed on the water-absorbent resin having a particle diameter of 250 to 500 ?m at 37° C. is 5-20.

Abstract: The present invention relates to an olefin polymer and a method for producing the same. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.

Abstract: The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35(·10?7 cm3·s/g) or more, and T-20 of 180 seconds or less.

Abstract: A porous chiral material of formula [M(L)1.

Abstract: The present invention relates to activated carbon sorbents including nitrogen. In various embodiments, the present invention provides an activated carbon sorbent including a halogen- or halide-promoted activated carbon, the activated carbon sorbent particles including nitrogen in a surface layer of the sorbent particles. In various embodiments, the present invention provides a method of reducing the pollutant content in a pollutant-containing gas using the activated carbon sorbent. In various embodiments, the activated carbon sorbent can remove mercury from a mercury-containing gas that includes sulfur(VI) such as SO3 more efficiently than other sorbents.

Abstract: An environmental control system is provided. The system includes a sorbent regeneration device. The sorbent regeneration device includes at least one regenerative sorbent material operative to remove gas substances from air. The at least one regenerative sorbent material is operatively coupled to a source of hot air. The sorbent regeneration device further includes at least two bypass valves that are operative to selectively direct some or all of the hot air into the at least one regenerative sorbent material. The environmental control system further includes one or more air quality sensors and a controller operatively connected to the at least two bypass valves and the one or more air quality sensors. The controller is operative to control one or more of the at least two bypass valves in response to air quality determined from the air quality sensors.

Abstract: A catalyst for oxidative coupling of methane, and preparation and application thereof. The catalyst comprises: a manganese sesquioxide, a tungstate, a manganese composite oxide having a perovskite structure and/or a spinel structure, and a carrier. The manganese sesquioxide, tungstate, and manganese composite oxide having a perovskite structure and/or a spinel structure are supported on the carrier, or the manganese sesquioxide and tungstate are supported on the admixture of the said manganese composite oxide having a perovskite structure and/or a spinel structure and the said carrier. Based on 100 parts by weight of the catalyst, the content of the manganese sesquioxide is a parts by weight, the content of the tungstate is b parts by weight, the content of the manganese composite oxide having the perovskite structure and/or the spinel structure is c parts by weight. e content of the carrier is d parts by weight. 0<a?20, 1?b?20, 1?c?40, 20?d<98.

Abstract: The invention relates to a silver-comprising catalyst system for the preparation of aldehydes and/or ketones by oxidative dehydrogenation of alcohols, in particular the oxidative dehydrogenation of methanol to form formaldehyde, comprising a first catalyst layer and a second catalyst layer, wherein the first catalyst layer consists of a silver-comprising material in the form of balls of wire, gauzes or knitteds having a weight per unit area of from 0.3 to 10 kg/m2 and a wire diameter of from 30 to 200 ?m and the second catalyst layer consists of a silver-comprising material in the form of granular material having an average particle size of from 0.5 to 5 mm and the two catalyst layers are in direct contact with one another. The invention further relates to a corresponding process for the preparation of aldehydes and/or ketones, in particular of formaldehyde, by oxidative dehydrogenation of corresponding alcohols over a silver-comprising catalyst system.

Abstract: A manufacturing method for supported catalysts comprising a step A of forming a mixed layer having a catalyst component and a catalyst carrier component on at least a portion of the surface of a support body having a catalytic layer by bringing a mixed solution comprising a catalyst raw material and a catalyst carrier raw material into contact with the support body having a catalytic layer on the surface. Furthermore, such a manufacturing method for supported catalysts preferably comprises a step B in which the catalyst component is made to segregate to a surface of the mixed layer after step A.