Abstract: Systems and methods of CO2 desublimation are presented in which refrigeration content is retained within the system. Most preferably, refrigeration content is recycled by providing the refrigeration content of a CO2-lean feed gas to the CO2-containing feed gas and to pre-cooling of a desublimator, and/or by providing refrigeration of effluent of a desublimator in regeneration to a refrigerant in a closed refrigeration cycle for deep-cooling of another desublimator.

Abstract: A process for treating steam-saturated crude gases from an entrained flow gasification of fuels before entry into heat exchangers sited upstream of a crude gas converting operation. To avoid solid deposits in an entrance region of the heat exchangers, the crude gas is converted from a saturated into a superheated state by supply of a hot gas to the crude gas. Hot gas contemplated is superheated high pressure steam or recycled superheated converted crude gas.

Abstract: Adsorber for adsorbing a fluid, comprising a cylinder with at least two parallel-passage contactors disposed in series in the direction of flow of the fluid to be adsorbed, and characterized in that each contactor comprises an internal insulation.

Abstract: A process for component separation in a polymer production system, comprising (a) separating a polymerization product stream into a gas stream and a polymer stream, (b) contacting the polymer stream with a purge gas to yield a purged polymer and a spent purge gas comprising purge gas, ethylene, and ethane, (c) contacting the spent purge gas with a temperature swing adsorber contactor (TSAC) to yield a loaded TSAC, wherein at least a portion of the ethylene is adsorbed by the TSAC at a first temperature to yield TSAC-adsorbed ethylene, wherein a portion of the ethane is adsorbed by the TSAC at the first temperature to yield TSAC-adsorbed ethane, (d) heating the loaded TSAC to a second temperature to yield a regenerated TSAC, and (e) contacting the regenerated TSAC with a sweeping gas stream to yield a recovered adsorbed gas stream comprising sweeping gas, recovered ethylene and recovered ethane.

Abstract: A solvent for absorbing H2S and CO2 is regenerated using two regenerators. Rich solvent is fed to a first regenerator producing a first acid gas stream from the top, and a partially regenerated solvent from the bottom. The partially regenerated solvent is fed to a second regenerator producing an overhead vapor stream from the top and a lean solvent stream from the bottom. A portion of the second regenerator overhead vapor stream may be cascaded to the first regenerator to contact rich solvent. The first acid gas stream and the remaining second regenerator overhead vapor stream are respectively fed to the first and second reaction zones of a two-stage Claus reaction furnace. Substantially all volatile organic contaminants are stripped in the first regenerator, and thus favorably destroyed in the first reaction furnace zone by virtue of higher local combustion temperatures and closer approach to oxidizing conditions.

Abstract: The technical field of the invention is CO2 capture and sequestration, as well as gas separation and purification technologies. In an aspect is a process for capturing purified CO2 from a CO2-containing gas, comprising steps: (a) contacting in an absorber column the CO2-containing gas with an absorption solution comprising water, ammonia, and potassium carbonate, to enable adsorption of CO2, thereby producing a CO2-depleted gas and a CO2-rich solution; and (b) subjecting the CO2-rich solution to desorption conditions in a regeneration column producing a purified CO2 gas stream and a CO2-depleted solution.

Abstract: Provided are a gas barrier resin composition, and a gas barrier composite film excellent in gas barrier properties with respect to oxygen, carbon dioxide gas, water vapor or the like, particularly in gas barrier properties even after hot water treatment. The gas barrier resin composition includes an oxazoline group-containing aqueous polymer (A), an aqueous acrylic resin (B) and/or an aqueous polyester resin (C) each at a specific concentration, wherein the ratio of the mole number of the oxazoline group to the mole number of the carboxyl group [the ratio of the mole number of the oxazoline group (x mmol) to the mole number of the carboxyl group (y mmol), which is indicated as (x/y)×100 (mol %)], is within the specific range. The gas barrier composite film uses this composition.

Abstract: A gas separation system, comprising a buffer tank that stores therein a source gas and supplies the source gas; a pressurizing unit configured to receive the source gas from the buffer tank and pressurize the received source gas; a first refining unit configured to produce a first refined gas by refining the source gas pressurized by the pressurizing unit, and discharge a first waste gas; a second refining unit configured to produce a second refined gas by refining the first refined gas, and discharge a second waste gas; a third refining unit configured to produce a third refined gas by refining the first waste gas; a first collection line configured to guide the second waste gas to the buffer tank, and including a second flow rate control valve for controlling a flow rate of the second waste gas.

Abstract: Methods, systems and apparatuses herein provide a unique and novel process to remove H2S from biogas. Methods, systems and apparatuses herein provide a unique and novel process to remove H2S from biogas with ease of operation and reduced operating and capital costs. Methods, systems and apparatuses herein provide a unique and novel process to remove H2S over CO2 from biogas.

Abstract: The present invention relates to an energy efficient carbon dioxide sequestration processes whereby Group 2 silicate minerals and CO2 are converted into limestone and sand using a two-salt thermolytic process that allows for the cycling of heat and chemicals from one step to another.

Abstract: In one embodiment, a carbon dioxide recovery apparatus includes a heat exchanger which heats a first rich liquid, a flow divider which divides the first rich liquid heated by the heat exchanger into a second rich liquid and a third rich liquid, a first release device which heats the second rich liquid and discharges a first semi-lean liquid, a second release device which heats the third rich liquid and discharges a second semi-lean liquid, and a regeneration tower which heats the first and second semi-lean liquids to generate a lean liquid. The first release device heats the second rich liquid, using the lean liquid. The second release device heats the third rich liquid, using a carbon dioxide-containing steam discharged at the regeneration tower. The heat exchanger heats the first rich liquid, using the lean liquid which has passed through the first release device.

Abstract: The present invention relates to a system and a method for the concentration of slurry, especially mineral containing slurry. The invention provides a system comprising an electrophoresis unit and a separation unit, where the separation unit comprises a recipient, preferably of half cylindrical form, with adjusted flanks for separating the solid material or cake from the rotating anodes and a sliding carriage suitable for closing the recipient and stripping resting solid material from the flanks into the recipient before the solid material or cake is pressed out of the recipient by a piston.

Abstract: The present invention provides a resin-wafer electrodeionization (RW-EDI) apparatus including cathode and anode electrodes separated by a plurality of porous solid ion exchange resin wafers, which when in use are filled with an aqueous fluid. The apparatus includes one or more wafers comprising a basic ion exchange medium, and preferably includes one or more wafers comprising an acidic ion exchange medium. The wafers are separated from one another by ion exchange membranes. The gas and aqueous fluid are introduced into each basic wafer via a porous gas distributor which disperses the gas as micro-sized bubbles laterally throughout the distributor before entering the wafer. The fluid within the acidic and/or basic ion exchange wafers preferably includes, or is in contact with, a carbonic anhydrase (CA) enzyme or inorganic catalyst to facilitate conversion of bicarbonate ion to carbon dioxide within the acidic medium.

Abstract: In one embodiment, this invention relates to an electrodialysis device comprising an inlet for directing a feed stream into a plurality of first feed paths and a plurality of second feed paths; the feed stream is comprised of a first anionic scaling species and a first cationic scaling species; the first cationic scaling species is transferred from the second feed paths to the first feed paths through a first membrane group, the first anionic scaling species is transferred from the first feed paths to the second feed paths through the first membrane group. In another embodiment, this invention relates to a method for passivating scaling species in an electrodialysis device.

Abstract: A method of purifying an alcohol, such as isopropyl alcohol, includes a first ion exchange step of performing ion exchange treatment on an alcohol-containing liquid; a step of performing dehydration treatment using a dehydration membrane on the liquid treated in the first ion exchange step; a distillation step of performing distillation on the dehydration-treated liquid; and a second ion exchange step of further performing ion exchange treatment on the liquid obtained in the distillation step to obtain a purified alcohol.

Abstract: A membrane container 6 has a casing 10 including a fluid inlet 14 and a fluid outlet 16 and a membrane container body 9 including a plurality of flow paths 11 which is arranged along the flow direction of the treated fluid and in parallel to one another. Each of the plurality of flow paths 11 includes a most upstream portion 11A which is connected to the fluid inlet 14, and a most downstream portion 11C which is connected to the fluid outlet 16. Return portions 15 and 17 configured to reverse the flow direction of the treated fluid are provided between the most upstream portion 11A and the most downstream portion 11C. After passing through the fluid inlet 14, the treated fluid flows from the most upstream portion 11A down to the most downstream portion 11C via the return portions 15 and the upper return portion 17.

Abstract: A multi-cartridge membrane contactor that can be used for many purposes, including, but not limited to, being a multi-cartridge degassing module. In accordance with at least particular certain embodiments, the module includes a plurality of hollow-fiber cartridges placed in a radial pattern around a central cartridge within a single larger vessel. For example, there may be two radial sets of cartridges placed in series at each of the radial positions.

Abstract: A porous membrane may have a high concentration of spherical fillers with a polymer binder. The polymer binder may have an affinity for the filler materials and may hold the filler materials together in a porous structure with high tortuosity and consistent pore size. The membrane may be manufactured with a reinforcing web, such as non-woven web. The membrane may be greater than 50% porous with a less than 1 micron pore size. Within the pore walls that may be less than 0.02 microns in width, a densely packed filler material may have an average diameter of less than 0.005 microns.

Abstract: A semipermeable gas separation membrane is plasma deposited from liquid organosiloxane monomer having at least three silicon atoms and an alpha hydrogen atom. The semipermeable membrane may be employed as a gas-selective membrane in combination with a porous substrate.

Abstract: The present invention relates to novel pervaporation membranes comprising a porous support layer upon which a thin coating is applied. More specifically, the present invention provides pervaporation membranes with an improved performance by applying an aggregate filled PTMSP coating with a maximal thickness of 25 ?m onto the porous support. The present invention further relates to methods of the manufacturing of such pervaporation membranes.

Abstract: A system for delivering vortex rings to an intended target includes a vortex ring generator, one or more component storage containers, and a component additive mechanism. The vortex ring generator is configured to deliver and air vortex rings. The component additive mechanism is configured to remove a component from at least one of the one or more component storage containers, generate a gas from the component, and to add the gas to a vortex ring after the vortex ring is generated by the vortex ring generator.

Abstract: A chemical dispensing assembly having injector assemblies that combine a solvent stream with a concentrate stream within a Venturi injector assembly to produce a chemical solution outlet stream. Each injector assembly has an interchangeable metering assembly that limits the flow of concentrate into the Venturi injector assembly to change the resulting concentration of the concentrate within the solution outlet stream. The chemical dispensing assembly also has a keyed connector system that prevents the connection of the wrong concentrate container to the wrong injector assembly.

Abstract: A method of introducing a first flow and a second flow into a process liquid flowing through a conduit including: injecting the first flow with an introduction liquid into the process liquid in transverse to a flow direction of the process liquid, wherein the injected first flow forms a mixing field comprising counter-rotating vortices in the process liquid; and injecting a second flow transverse to the flow direction of the process liquid and between the counter-rotating vortices.

Abstract: The present invention provides a chemical-liquid mixing method and a chemical-liquid mixing apparatus capable of sufficiently generating a peroxornonosulfuric acid that is effective in removing a resist from a substrate, when a sulfuric acid and a hydrogen peroxide solution are mixed with each other. At first, an inner tank 10 is filled up with a sulfuric acid and the sulfuric acid overflowing from the inner tank 10 is allowed to flow into an outer tank 12. Then, a hydrogen peroxide solution is supplied into the inner tank 10 and the hydrogen peroxide solution is allowed to flow into the outer tank 12 whereby the two kinds of liquids of the hydrogen peroxide solution and the sulfuric acid are stored in the outer tank 12. Simultaneously when the hydrogen peroxide solution flows into the outer tank 12, a return pump 16 is activated.

Abstract: The invention relates to a stirring installation (1) for stirring a liquid and/or a paste in a container (10), comprising an actuating means (5) arranged outside the container (10) and a stirring means (2, 8, 9) arranged inside the container (10) comprising at least two blades (2). The stirring means (2, 8, 9) is rotatably coupled to the actuating means (5) by a coupling element (3), in such a way that the blades (2) are movably attached with a first end to at least a bearing (4) of the coupling element (3). During a rotation of the coupling element (3), the blades (2) are pivotable around the bearing (4) due to the influence of the centrifugal force. Furthermore, the invention relates to a method for stirring a liquid in the container (10) by means of the stirring installation (1).

Abstract: The present invention relates to a method, an apparatus and a rotor for homogenizing a medium. The invention may be utilized in all areas of industry where mere homogenization of a medium or mixing of at least two flowing media is needed. A preferred application of the invention can be found in pulp and paper making industry where various chemicals have to be mixed with fiber suspensions. A characterizing feature of the invention is the symmetry of the homogenizing operation in the homogenizing chamber.

Abstract: A column-type solid-liquid countercurrent contact apparatus, a washing apparatus for solid particles such as poly(arylene sulfide) (PAS) particles, a PAS manufacturing apparatus, a method of solid-liquid countercurrent contact, a method of washing solid particles such as PAS particles, and a method of manufacturing PAS, wherein a column top part, a column body part, and a column bottom part are included, the column body part is provided with a plurality of stirring chambers connected in the vertical direction and mutually divided by a ring-shaped partitioning plate, a paddle blade (a blade diameter/a diameter of the stirring chamber?0.65 and the blade diameter/the diameter of the stirring chamber?0.10) and a baffle are disposed at each of the plurality of stirring chambers, and a disc having a size covering at least a part of a communication opening positioned below the paddle blade is attached to a rotating shaft or to the paddle blade.

Abstract: A shaking device for mixing nail polish mixes bottles of nail polish prior to use in order to achieve a uniform mixing of contents in the bottle. The shaking device includes a housing having a top side, a bottom side, and a peripheral wall extending between the top and bottom sides. A frame is mounted in an interior of the housing. A primary shaft is coupled to the frame. A container is coupled to the primary shaft and has an interior space configured for holding an object to be shaken. A motor is coupled to the frame. The motor is mechanically coupled to the primary shaft wherein actuation of the motor causes movement of the primary shaft and vibrates the object held in the container.

Abstract: The invention describes a radial bed catalytic conversion unit having an outer cylindrical chamber (1), an inner chamber (2) which is also cylindrical, the annular zone included between the outer chamber and the inner chamber, termed the reaction zone (I), being filled with catalyst under slow gravitational flow, and the feed being introduced via an inlet pipe (E), connected to an intermediate box (F) which is in turn connected to a plurality of distribution tubes (3) disposed inside the reaction zone (I) in the vicinity of the outer chamber (1).

Abstract: The present invention relates to a method of preparing an aqueous dispersion of polymer encapsulated particulate material, the method comprising: providing a dispersion of the particulate material in a continuous aqueous phase, the dispersion comprising ethylenically unsaturated monomer and a stabilizer for the particulate material; and polymerizing the ethylenically unsaturated monomer by non-living free radical polymerization to form polymer that encapsulates the particulate material, thereby providing the aqueous dispersion of polymer encapsulated particulate material; wherein polymerization of the ethylenically unsaturated monomer comprises: (a) polymerizing a monomer composition that includes ionizable ethylenically unsaturated monomer so as to form a base responsive water swellable non-living polymer layer that encapsulates the particulate material; and (b) polymerizing a monomer composition that includes non-ionizable ethylenically unsaturated monomer so as to form an extensible, water and base permeab

Abstract: There is disclosed an electrode array device having an adsorbed porous reaction layer for improved synthesis quality. The array comprises a plurality of electrodes on a substrate, wherein the electrodes are electronically connected to a computer control system. The array has an adsorbed porous reaction layer on the plurality of electrodes, wherein the adsorbed porous reaction layer comprises a chemical species having at least one hydroxyl group. In the preferred embodiment, the reaction layer is sucrose. A method for preparing an electrode array for improved synthesis quality is disclosed. The method comprises a cleaning method and a method of attachment of a reaction layer. The cleaning method comprises a plasma cleaning method and a chemical cleaning method. The reaction layer is attached after cleaning by exposing the microarray to a solution containing the chemical species having at least one hydroxyl group.

Abstract: Disclosed is a device and method for contacting a biological substrate. A non-thermal plasma device delivers a non-thermal plasma discharge using a dielectric conduit, an igniter electrode and a RF electrode. The dielectric conduit fluidicly communicates a gas therethrough and an igniter electrode ionizes at least a portion of the gas. The RF electrode, disposed circumferentially proximate to the exterior of the dielectric conduit, generates non-thermal plasma from the ionized gas. The non-thermal plasma is discharged from the dielectric conduit and contacts a biological substrate. The non-thermal plasma discharge may be suitable for tissue bonding and sterilization applications.

Abstract: Provided are methods and apparatus for forming electrode active materials for electrochemical cells. These materials include a metal (e.g., iron, cobalt), lithium, and fluorine and are produced using plasma synthesis or, more specifically, non-equilibrium plasma synthesis. A metal containing material, organometallic lithium containing material, and fluorine-containing material are provided into a flow reactor, mixed, and exposed to the electrical energy generating plasma. The plasma generation enhances reaction between the provided materials and forms nanoparticles of the electrode active materials. The nanoparticles may have a mean size of 1-30 nanometers and may have a core-shell structure. The core may be formed by metal, while the shell may include lithium fluoride. A carbon shell may be disposed over the lithium fluoride shell. The nanoparticles are collected and may be used to form an electrochemical cell.

Abstract: Hydroprocessing can be performed at low pressure using acoustic energy. For example, hydroprocessing a feedstock having one or more hydrocarbon compounds carried in, or mixed with, a transport gas involves flowing the feedstock through a reaction zone in a reactor that has a bulk pressure less than 68 atm and applying acoustic energy through the reaction zone. The hydrocarbon compounds are chemically reacted with a hydrogen source in the presence of a catalyst, wherein the reacting occurs in the reaction zone.

Abstract: The packing includes a pile of plates having corrugations forming a succession of positive and negative edges, each edge comprising fins, each fin being made up of at least one band cut out in one of the plates and remaining secured to the plate on at least one side, the band being deformed so as to create an orifice forming a discontinuity on the surface of the plate, wherein the direction of the edges of a plate forms a non-zero angle with respect to the direction of the edges of an adjacent plate. Each plate has at least one longitudinal zone parallel to one lip of the plate where the edges have no orifice, the zones being positioned in such a way that two adjacent plates have their zone one above the other so as to form at least one point of contact between a positive edge and a negative edge of the two adjacent plates.

Abstract: The invention concerns a capture mass for capturing heavy metals in a liquid or gaseous effluent, comprising a porous solid support, copper sulphide and at least one second metal sulphide the metal of which is selected from the group constituted by chromium, manganese, iron, cobalt and nickel, and in which the ratio of the percentage by weight of the metal or metals other than copper to the percentage by weight of copper is in the range 0.01 to 2. The invention also concerns a process for preparing said capture mass and a process for capturing heavy metals in a gaseous or liquid effluent, in which said effluent is brought into contact with said capture mass.

Abstract: According to the invention there is provided a zeolite having a porous structure produced by forming the zeolite on a porous carbon substrate which has been substantially or completely removed, wherein (i) the zeolite was formed on the substrate at a loading of at least 8% by weight and/or (ii) the zeolite has a reinforcing layer.

Abstract: A method of forming a desiccating part including the steps of: (a) blending a composition comprising: at least 60 wt % desiccant, up to 10 wt % wetting agent, up to 5 wt % processing aid, and 10-30 wt % thermosetting resin; (b) forming the composition blended in step (a) into a part or shape; and (c) heating the part or shape of step (b) to crosslink the resin. Also included is a desiccating part comprising at least 70 wt % desiccant and a thermosetting binder resin.

Abstract: This disclosure relates to graphene derivatives, as well as related devices including graphene derivatives and methods of using graphene derivatives.

Abstract: Disclosed herein is a ceramic body comprising at least one phase comprising a pseudobrookite-type crystal structure and at least one phase comprising zirconium tin titanate. Also disclosed are porous ceramic honeycomb structures comprising a ceramic body comprising at least one phase comprising a pseudobrookite-type crystal structure and at least one phase comprising zirconium tin titanate and methods of preparing a ceramic body comprising at least one phase comprising a pseudobrookite-type crystal structure and at least one phase comprising zirconium tin titanate.

Abstract: The present invention relates to a photocatalyst for the generation of diatomic hydrogen from a hydrogen containing precursor under the influence of actinic radiation comprising semiconductor support particles comprised of SrTiO3 and TiO2 with one or more noble and/or transition metals deposited thereon. Further disclosed is a method for preparing such catalyst and a method for generating diatomic hydrogen by photolysis.

Abstract: An exhaust gas purification catalyst composition and a catalyst for exhaust gas purification for automobile, superior in purification performance of a carbon monoxide (CO), a hydrocarbon (HC) and nitrogen oxides (NOx) in exhaust gas discharged from an internal combustion engine of a gasoline vehicle or the like. The exhaust gas purification catalyst composition for purifying a carbon monoxide (CO), a hydrocarbon (HC) and nitrogen oxides (NOx) in automobile exhaust gas, includes a catalyst composition where a rhodium particle (A) is supported on alumina (C) together with a neodymium oxide particle (B), or the like. The neodymium oxide particle (B) having an average particle diameter of 100 nm or smaller, exists at the neighborhood of the rhodium particle (A), as a transfer inhibiting material.

Abstract: The present invention is to provide a catalyst composition for exhaust gas purification, which is superior in purification performance for nitrogen oxides (NOx), carbon monoxide (CO) and hydrocarbons (HC) in exhaust gas to be discharged from an internal combustion engine of a gasoline vehicle or the like; and an catalyst for exhaust gas purification for automobiles. The present invention is a catalyst composition for exhaust gas purification for purifying nitrogen oxides, carbon monoxide, and hydrocarbons in exhaust gas, which includes a catalyst composition wherein rhodium is supported, together with an ?-alumina particle, on a zirconia-type base material, characterized in that average particle size of the ?-alumina particle is 10 nm to 1 ?m, and also is smaller than average particle size of the zirconia (ZrO2)-type base material.

Abstract: This invention relates to the process of using a catalyst for the photo-catalytic degradation of methyl tertiary butyl ether (MTBE) in water. A Pd/Ce2O3—ZnO photo-catalyst is formed to react with MTBE dissolved in water sample and UV irradiated to reduce the MTBE concentration in the water sample. A 95-97% degradation of MTBE is observed using this process.

Abstract: Novel catalysts comprising nickel oxide nanoparticles supported on alumina nanoparticles, methods of their manufacture, heavy oil compositions contacted by these nanocatalysts and methods of their use are disclosed. The novel nanocatalysts are useful, inter alia, in the upgrading of heavy oil fractions or as aids in oil recovery from well reservoirs or downstream processing.

Abstract: The present application describes a catalyst that is suitable for the CO2 reforming of methane-rich gases, such as biogas, that is resistant to poisoning by sulfur. The catalyst comprises from about 5 wt % to about 20 wt % Ni and 0 wt % to about 10 wt % Co supported on a support having a formula selected from: (a) Al2O3; (b) M1aOb—Al2O3; and (c) M1aOb—ZrO2—Al2O3, where M1aOb is either CaO or MgO.

Abstract: The carrier of the present invention includes at least 85 wt percent alpha alumina, at least 0.06 wt percent SiO2 and no more than 0.04 wt percent Na2O. The carrier has a water absorption no greater than 0.35 g/g and a ratio of water absorption (g/g) to surface area (m2/g) no greater than 0.50 g/m2. Another aspect of the invention is a catalyst for the epoxidation of olefins which comprises the above described carrier and silver dispersed thereon, where the carrier has a monomodal, bimodal or multimodal pore distribution and where the quantity of silver is between 5 and 50 wt/%, relative to the weight of the catalyst. A reactor system for the epoxidation of olefins is also disclosed.

Abstract: To provide a honeycomb structure capable of using as a catalyst carrier, which functions as a heater, and where a bonding layer is hard to break and an electrical resistance value is hard to rise; including a honeycomb segment bonded body where honeycomb segments are bonded by bonding layer, and a pair of electrode members disposed on a side surface of the bonded body, the electrode members is formed into a band shape, and in a cross section perpendicular to the cell extending direction, one electrode member is disposed on an opposite side across the center of the bonded body to another electrode member, and in at least a part of the bonding layer, inorganic fibers made of ?-SiC and a metal silicide are included in a porous body where silicon carbide are bound with silicon in a state where pores are held among the particles.

Abstract: A method for treating engine exhaust. The method includes contacting an NOx exhaust with an upstream catalyst material coated onto a substrate and including copper or iron loaded in a first zeolite at an upstream loading of 0 to 3.5 g/l to convert the NOx exhaust in a first temperature range of 150° C. to 500° C. to a first NOx converted exhaust. The method further includes contacting the first NOx converted exhaust with a downstream catalyst material coated onto the substrate downstream of the upstream catalyst material and including copper or iron loaded in a second zeolite at a downstream loading of 1.5 to 9.5 g/l to convert the first NOx converted exhaust in a second temperature range of 450° C. to 700° C.

Abstract: The present invention relates to a catalyst for the conversion of methanol to aromatics and the preparation of the same. The catalyst comprising 85 to 99 parts by weight of a ZSM-5 zeolite, 0.1 to 15 parts by weight of element M1, which is at least one selected from the group consisted of Ag, Zn and Ga, and 0 to 5 parts by weight of element M2, which is at least one selected from the group consisted of Mo, Cu, La, P, Ce and Co, wherein the total specific surface area of the catalyst ranges from 350 to 500 m2/g, and the micropore specific surface area ranges from 200 to 350 m2/g. The catalyst has high total specific surface area, micropore specific surface area and micropore volume. Good catalytic activity can be shown from the results of the reaction of aromatics preparation from methanol using the catalyst provided by the present invention.