EXHAUST GAS COMPONENT PURIFICATION CATALYTIC MATERIAL AND CATALYZED PARTICULATE FILTER WITH THE CATALYTIC MATERIAL

An exhaust gas component purification catalytic material for use in removal of particulates in an exhaust gas through combustion includes: composite oxide particles containing zirconium and neodymium and not containing cerium; and praseodymium oxide particles in contact with the composite oxide particles 1. An exhaust gas component purification catalytic material for use in removal of particulates in an exhaust gas through combustion , the exhaust gas component purification catalytic material comprising:composite oxide particles containing zirconium and neodymium and not containing cerium; andpraseodymium oxide particles in contact with the composite oxide particles.2. The exhaust gas component purification catalytic material of claim 1 , whereinthe composite oxide particles and the praseodymium oxide particles are mixed together and in contact with one another.3. The exhaust gas component purification catalytic material of claim 1 , whereinone of the composite oxide particles or the praseodymium oxide particles form cores, and the other are loaded on surfaces of the cores.4. The exhaust gas component purification catalytic material of claim 1 , whereinthe composite oxide particles are at least one type of composite oxide particles selected from the group consisting of: ZrNd composite oxide particles containing zirconium, neodymium, and oxygen; ZrNdPr composite oxide particles containing zirconium, neodymium, praseodymium, and oxygen; ZrNdLa composite oxide particles containing zirconium, neodymium, lanthanum, and oxygen; and ZrNdY composite oxide particles containing zirconium, neodymiumm, yttrium, and oxygen.5. The exhaust gas component purification catalytic material of claim 2 , whereinthe composite oxide particles are at least one type of composite oxide particles selected from the group consisting of: ZrNd composite oxide particles containing zirconium, neodymium, and oxygen; ZrNdPr composite oxide particles containing zirconium, neodymium, praseodymium, and ...

Exhaust gas purification catalyst and method of fabricating the same

An exhaust gas purification catalyst comprises an oxygen storage component constituted by a mixed oxide containing cerium and zirconium, and a catalytic metal and a NOx storage component are carried on the oxygen storage component. The oxygen storage component is in the form of porous secondary particles in each of which primary particles of an average particle size of less than 10 nm cohere to form fine pores inside each said secondary particle.

Exhaust gas purifying device for engine

An exhaust gas purifying device of the present invention comprises NOx trap catalyst including NOx trap material, catalytic metal and O2 storage material, NOx sensor, section for releasing NOx when NOx absorbed amount of the NOx trap catalyst reaches a specified amount, section for determining diagnosis conditions of the NOx trap catalyst, section for detecting termination of O2 release from the O2 storage material, and section for diagnosing O2 storage capacity according to output value (NO1) of the NOx sensor during a term from beginning of the oxygen concentration lowering by the NOx release section until termination of the O2 release and for diagnosing NOx reduction capacity of the catalytic metal according to output value (NO2) of the NOx sensor after termination of O2 release, wherein a speed of lowering oxygen concentration during the diagnosis is set so as to be slower than that during non-diagnosis.

Exhaust gas purifying catalyst and exhaust gas purifying method

Disclosed is an exhaust gas purifying catalyst, which comprises a catalyst layer formed on a honeycomb-shaped support. The catalyst layer is formed by mixing a catalyst powder (A) consisting of a composite oxide (RhZrCeNdO) which contains at least Ce, Zr, and a catalytic noble metal composition, and a catalyst powder (B) consisting of a Zr-based oxide (RhZrXO) which contains at least Zr and has Rh existing on a surface thereof. A ratio (RhZrXO/RhZrCeNdO) of a mass of the catalyst powder (B) to a total mass of the catalyst powder (A) and the catalyst powder (B) may be set in the range of 1 to 50%. Further, the catalyst powder (B) may consist of a composite oxide which contains Zr as a primary component, a rare-earth metal except Ce, and Rh. The exhaust gas purifying catalyst of the present invention can provide enhanced exhaust gas conversion efficiency.

Exhaust gas purifying method and exhaust gas purifying catalyst

A catalyst comprises an HC trapping material that is capable of trapping HC in an exhaust gas under low temperatures and releasing HC with a raise in temperature and catalytic material containing a Ce—Pr double oxide capable of oxidizing and purifying HC from the HC trapping material with a high efficiency.

Exhaust gas catalytic conversion system

An upstream catalyst and a downstream catalyst are disposed in an exhaust passage of an engine. The downstream catalyst contains in the same catalyst layer thereof. Rh-doped CeZrNd mixed oxide particles on which Rh is supported and active alumina particles on which Pt is supported. The upstream catalyst is a three-way catalyst containing an oxygen storage component having a lower oxygen storage capacity than the Rh-doped CeZrNd mixed oxide.

Exhaust gas purification catalyst

A catalyst layer includes: a first mixed oxide particle component 4 which contains Ce and Rh 8 and in which Rh is partially exposed at particle surfaces; and a second mixed oxide particle component 5 containing Ce, Zr, and a rare earth metal except Ce. The particle size distribution of the first mixed oxide particle component 4 has a peak in the particle size range from 100 nm to 300 nm, both inclusive. The particle size distribution of the second mixed oxide particle component 5 has a peak in a particle size range larger than the particle size range in which the first mixed oxide particle component 4 has the peak. At least part of particles of the first mixed oxide particle component 4 is attached to at least part of particles of the second mixed oxide particle component 5.

Catalyst-carried particulate filter

A catalyst-carried particulate filter contains a catalyst obtained by mixing Pt/alumina acting to promote the burning of particulates in a high temperature range, a second oxide acting to promote the burning of particulates in a low temperature range and a first oxide acting to promote the burning of particulates in an intermediate temperature range.

Control device of hydrogen engine

There are provided NOx trap catalyst to trap and release NOx based on air-fuel ratio, first fuel supply means for supplying gasoline, second fuel supply means for supplying hydrogen, engine operation detecting means for detecting engine operating condition, fuel ratio changing means for changing the ratio of gasoline and hydrogen, NOx release determining means for determining whether it is required for the NOx to be released based on a state of the trapped NOx, NOx releasing means for releasing the NOx trapped by making the air-fuel ratio rich when the NOx releasing requirement is determined, gasoline ratio increasing means for increasing the ratio of gasoline when NOx releasing requirement is determined and the air-fuel-ratio rich control is executed. Accordingly, improper vibrations or noises can be restrained from occurring when the rich air-fuel-ratio control is executed to release the trapped NOx from the NOx trap catalyst.

Catalyzed particulate filter

A filter is configured for efficient combustion of particulates accumulated on a catalyst layer 7 in both a rapid combustion range and a slow combustion range. The catalyst layer 7 on an exhaust gas passage wall of a filter 1 includes a mixture of a Rh-doped Ce-containing composite oxide particle material loaded with Pt and a composite particle material loaded with Pt. In mixed particles of this mixture, Zr-containing composite oxide particles containing no Ce and activated alumina particles are mixed together and agglomerated.

Exhaust gas catalytic converter

The present invention is intended to ensure the improvement in catalytic performance of an exhaust gas catalytic converter, which is an essential performance thereof, ensure the thermal resistance thereof and downsize the converter, i.e., improve the arrangeability thereof. The exhaust gas catalytic converter has an upstream catalyst and a downstream catalyst which are arranged in upstream and downstream sides of an engine exhaust passage through which exhaust gas flows. Each of the upstream catalyst and the downstream catalyst contains an oxygen storage component. The oxygen storage component in the upstream catalyst has a structure in which Rh atoms are placed at or between crystal lattice points of a mixed oxide containing Ce and Zr and has a larger amount of oxygen storage than the oxygen storage component in the downstream catalyst under the same temperature conditions.

Exhaust gas purification catalyst and catalyst-equipped diesel particulate filter

To improve the performance of an exhaust gas purification catalyst and enhance the particulate matter burning rate of a catalyst-equipped diesel particulate filter, the catalyst contains a mixed oxide of Zr, at least one kind of rare earth metal other than Ce and precious metal. The rare earth metal is selected from the group of Y, Yb, Nd and Sc. The mixed oxide is obtained by mixing an acidic solution containing Zr ions, ions of at least one kind of rare earth metal other than Ce and precious metal ions with a basic solution to obtain a mixed oxide precursor through coprecipitation and calcining the precursor.

Exhaust gas purification catalyst

A Ce—Zr mixed oxide is employed as an oxygen storage component for a lean-NOx catalyst, and catalytic precious metal atoms are placed at and/or between crystal lattice points of the mixed oxide. This structure prevents the sintering of the precious metal and accelerates movement of oxygen ions in each of crystallites of the Ce—Zr mixed oxide to increase the oxygen storage/release amount of the mixed oxide, which enhances the NOx removal performance of the catalyst.

Exhaust gas purification catalytic material and method for fabricating the same

The present invention relates to an exhaust gas purification catalytic material containing: (a) a mixed oxide containing Ce and Zr for storing and releasing oxygen; and (b) a precious metal catalyst made of one or more kinds of precious metals. The precious metal catalyst comprises a first precious metal catalyst component placed between atoms, at crystal lattice points and/or at oxygen defect sites of the mixed oxide and a second precious metal catalyst component loaded on the surface of the mixed oxide, thereby improving the thermal resistance, oxygen storage capacity and exhaust gas conversion performance of the catalytic material.

Exhaust gas purification system and exhaust gas purification method

Provided is a system where a composite catalyst into which an LNT catalyst and an oxidation catalyst are combined, a catalyzed particulate filter, an injector configured to inject a urea water solution into an exhaust gas passage, and an SCR catalyst are arranged in this order in an upstream-to-downstream direction of the flow of the exhaust gas.

Microorganism and method for producing triacylglycerol

A microorganism having at least one SPX gene encoding SPX protein responsive to phosphorus deficiency, and characterized in that a function of the SPX protein is decreased or lost by introducing gene mutation into the SPX gene.

Exhaust gas purification catalyst and oxygen storage component for the same

In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO₂/ZrO₂ mass ratio of 1.4 or more and the ratio of Nd₂O₃/(CeO₂+ZrO₂+Nd₂O₃) in the mixed oxide is 20 mass % or less.

Exhaust gas purification catalyst

An exhaust gas purification catalyst comprises: an oxygen storage component constituted by a mixed oxide containing cerium and zirconium; and a catalytic metal carried on the oxygen storage component. The oxygen storage component is in the form of hollow secondary particles each formed so that primary particles of an average particle size of less than 10 nm cohere into a shell.

Exhaust gas purifying device for engine

An exhaust gas purifying device of the present invention comprises NOx trap catalyst including NOx trap material, catalytic metal and O2 storage material, NOx sensor, section for releasing NOx when NOx absorbed amount of the NOx trap catalyst reaches a specified amount, section for determining diagnosis conditions of the NOx trap catalyst, section for detecting termination of O2 release from the O2 storage material, and section for diagnosing O2 storage capacity according to output value (NO1) of the NOx sensor during a term from beginning of the oxygen concentration lowering by the NOx release section until termination of the O2 release and for diagnosing NOx reduction capacity of the catalytic metal according to output value (NO2) of the NOx sensor after termination of O2 release, wherein a speed of lowering oxygen concentration during the diagnosis is set so as to be slower than that during non-diagnosis.

Exhaust gas purification catalyst

Catalytic converter comprises a carrier having exhaust gas passages therein, a lower catalytic layer coated over the carrier and comprising hollow oxide powder loaded with catalytic metal, and an upper catalytic layer coated over the lower catalytic layer, directly exposed to exhaust gas flowing in the exhaust gas passages and comprising solid oxide powder loaded with catalytic metal. The hollow oxide powder may be ceria or alumina base oxide. Further it may be mixed oxide such as Ce-Zr mixed oxide or La contained alumina as well.

Exhaust gas purification catalyst and oxygen storage component for the same

In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO2/ZrO2 mass ratio of 1.4 or more and the ratio of Nd2O3/(CeO2+ZrO2+Nd2O3) in the mixed oxide is 20 mass % or less.

Method of producing exhaust gas purifying catalyst and catalyst produced thereby

An exhaust gas purifying catalyst contains a NOx absorbing component which comprises at least one kind of element selected from a group of alkaline earth metals, a group of alkaline metals and a group of rare earth elements and a component, other than the NOx absorbing component, selected between K and Na. The catalyst has a such a structure that the component other than the NOx absorbing component is brought into contact with an exhaust gas before the NOx absorbing component is brought into contact with the exhaust gas.

Exhaust gas purifying catalyst

Disclosed is an exhaust gas purifying catalyst, which comprises an oxygen absorbing material having a catalytic noble metal arranged at a lattice position or an interlattice position of a crystal structure of a composite oxide containing Ce and Zr, which is capable of sufficiently exhibiting a catalytic function even if a ZrO 2 mass ratio is out of the range of 20 to 30 mass % or 65 to 90 mass %. Specifically, in an exhaust gas purifying catalyst formed with a catalyst layer including a cerium-zirconium (CeZr) composite oxide, the composite oxide contains ceria (CeO 2 ) and zirconia (ZrO 2 ) in such a manner that a mass ratio of ceria to a total mass of ceria and zirconia falls within the range of 36 to 64 mass %. Further, the composite oxide contains, in the form of an oxide, a rare-earth metal other than cerium (Ce), in the range of 3 to 20 mass % with respect to a total mass of the composite oxide.

Exhaust gas purifying catalyst

An exhaust gas purifying catalyst includes a carrier and a catalyst layer provided on the carrier. The catalyst layer includes active Al2O3 on which a noble metal is carried, an oxygen storage agent on which Rh is carried, Al2O3 coated with ZrO2 on which Rh is carried, and a binder material.

Exhaust gas purifying catalyst

Disclosed is an exhaust gas purifying catalyst, which comprises a CeZr-based composite oxide capable of maintaining a hollow structure to ensure an oxygen absorbing/releasing capability, even after being exposed to high-temperature exhaust gas. The exhaust gas purifying catalyst comprises a honeycomb-shaped substrate, and a catalyst layer formed on a surface of the substrate. The catalyst layer contains a composite oxide which includes cerium (Ce) and zirconium (Zr) and has a hollow structure, and a catalytic metal supported by the composite oxide. The composite oxide having the hollow structure includes, in a state after being subjected to a thermal aging in Air at 1000° C. for 24 hours, a particle with a shape having an outer diameter of 750 to 1000 nm and a shell thickness of 80 to 120 nm.

Exhaust gas purification catalyst and method for producing the same

An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes a binder material of Rh-doped CeZr-based composite oxide containing Ce and Zr and doped with Rh. The binder material has been previously subjected to a reduction treatment.

Exhaust gas purifying catalyst and exhaust gas purifying method

Disclosed is an exhaust gas purifying catalyst, which comprises a catalyst layer formed on a honeycomb-shaped support. The catalyst layer is formed by mixing a catalyst powder (A) consisting of a composite oxide (RhZrCeNdO) which contains at least Ce, Zr, and a catalytic noble metal composition, and a catalyst powder (B) consisting of a Zr-based oxide (RhZrXO) which contains at least Zr and has Rh existing on a surface thereof. A ratio (RhZrXO/RhZrCeNdO) of a mass of the catalyst powder (B) to a total mass of the catalyst powder (A) and the catalyst powder (B) may be set in the range of 1 to 50%. Further, the catalyst powder (B) may consist of a composite oxide which contains Zr as a primary component, a rare-earth metal except Ce, and Rh. The exhaust gas purifying catalyst of the present invention can provide enhanced exhaust gas conversion efficiency.

State estimation device, method and computer program therefor

A state of a user of a mobile terminal having a display for displaying an image may be estimated. A sightline detector detects a sightline of the user of a mobile terminal and processing circuitry is configured to estimate a state of the user. The processing circuitry is configured to determine a top-down index value that is correlated with an attention source amount allocated to top-down attention of the user with respect to an image displayed on a display of the mobile terminal. The processing circuitry is configured to determine a bottom-up index value correlated with the attention source amount allocated to bottom-up attention of the user with respect to the image displayed on the display. The processing circuitry is configured to estimate the user state including an attention function degraded state based on the top-down index value and the bottom-up index value.

Catalytic material and catalyst for purifying exhaust gas component

Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of Nd2O3/(ZrO2+Nd2O3+RO) is 3 mol % or more, and a ratio of (Nd2O3+RO)/(ZrO2+Nd2O3+RO) is 33 mol % or less. The catalytic material of the present invention can oxidize/burn PM in a short period of time, while suppressing CO emission during the burning of the PM, and can achieve further enhanced NOx conversion performance.

Exhaust gas purification catalyst and exhaust gas purification system

In a catalyst for exhaust gas purification which comprises (a) a NOxabsorbent material which absorbs NOxin an exhaust gas in an environment of excess oxygen whose exhaust gas oxygen concentration level is high, whereas, when the exhaust gas oxygen concentration level becomes lower in a given temperature range, the NOxabsorbent material releases the absorbed NOxand (b) a precious metal, the exhaust gas purification catalyst further comprises an oxygen storage material which releases a larger amount of oxygen in the given temperature range in comparison with other temperature ranges. As a result of such arrangement, the NOxabsorption efficiency of the NOxabsorbent material in an environment of excess oxygen of high exhaust gas oxygen concentration level, i.e., the lean NOxpurification rate thereof, can be improved.

Catalyst for purifying exhaust gas and method for purifying exhaust gas with the catalyst

The present invention provides a catalyst for purifying an exhaust gas having excellent heat resistance and a small level of deterioration of the purifying ability of the exhaust gas even if the catalyst is exposed to a high temperature atmosphere for a long time. The catalyst for purifying an exhaust gas comprises a catalytic metal for oxidizing HC and CO and reducing NOxfor purification, and a mixed oxide containing Ce, Zr and Sr.

Catalyst for purifying exhaust gas and manufacturing method thereof

An exhaust gas purifying catalyst is provided by coating a slurry of a mixture of a powdered first catalyst provided by carrying Pt on a mixture of alumina and ceria and a powdered second catalyst provided by carrying Rh on manganese oxide on a support member and then impregnating the coated layer with a solution of barium.

System for controlling engine

An engine control system causes a NOx trapping substance to release absorbed NOx by increasing an amount of fuel and spraying the fuel through primary fuel injection which is made at a primary fuel injection timing near a dead top center of a compression stroke and post-fuel injection which is made at a post-fuel injection timing between an expansion stroke and an exhaust stoke after said primary fuel injection with a retardation which is large at the beginning of implementation of the post-fuel injection and, thereafter changed small.

Exhaust gas purification catalyst and method for producing the same

An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes Rh-supporting Zr-based composite oxide in which Rh6 is supported on Zr-based composite oxide containing Zr and a rare earth metal except Ce. The Rh-supporting Zr-based composite oxide has been previously subjected to a reduction treatment.

Device for purifying exhaust gas, method for purifying exhaust gas, catalyst for purifying exhaust gas, and method for manufacturing exhaust gas purifying catalyst

A catalyst for lowering NOx concentration in an exhaust gas is disposed in an exhaust gas passage of an engine. The catalyst composed of a catalyst layer formed on a substrate. A NOx absorber that absorbs NOx when an oxygen concentration in the exhaust gas is high and releases NOx when the oxygen concentration drops, and a precious metal for reducing NOx are supported on a support material as catalyst components, and the NOx absorber includes Ba, K, Sr, and Mg. By lowering the oxygen concentration in the exhaust gas and raising a temperature of the NOx absorber when sulfur component is absorbed excessively in the NOx absorber, it is possible to regenerate the catalyst from the S poisoning.

Diesel particulate filter

The present invention is intended to configure a diesel particulate filter to allow the burning rate of particulates to increase even with a small amount of catalytic metal or even without using any catalytic metal. In the diesel particulate filter, walls forming exhaust gas channels in a filter body on which the particulates are trapped are coated with a catalyst layer for promoting the burning of the trapped particulates. The catalyst layer contains a mixed oxide in which Ce, Zr and a rare earth element R other than Ce are contained in a Ce/(Ce+Zr) mole ratio between 10% and 90% both inclusive or between 20% exclusive and 80% inclusive.

Burned gas purifying catalyst

An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.

Exhaust gas purification catalyst

In an exhaust gas purification catalyst in which a catalytic coating containing plural kinds of aluminas and plural kinds of oxygen storage components each carrying a catalytic precious metal is coated on a honeycomb support, the catalytic coating is formed of an upper layer and a lower layer, palladium is carried on a first alumina and a Ce—Zr—La—Y-alumina compound having oxygen storage capacity in the lower layer, platinum is carried on a second alumina in the upper layer, and rhodium is carried on a third alumina and a Ce—Zr—Nd mixed oxide having oxygen storage capacity in the upper layer.

Exhaust gas purifying catalyst and exhaust gas purifying system

An exhaust gas purifying catalyst comprises a substrate, an inner catalytic layer coated on the substrate, an intermediate catalytic layer containing Pd laid over said inner catalytic layer, and an outer catalytic layer containing a NOx adsorption material laid over said intermediate catalytic layer. The Pd isolated from the NOx adsorption material is prevented from lowering its low temperature activity.

CATALYZED PARTICULATE FILTER

A filter is configured for efficient combustion of particulates accumulated on a catalyst layer in both a rapid combustion range and a slow combustion range. The catalyst layer on an exhaust gas passage wall of a filter includes a mixture of a Rh-doped Ce-containing composite oxide particle material loaded with Pt and a composite particle material loaded with Pt. In mixed particles of this mixture, Zr-containing composite oxide particles containing no Ce and activated alumina particles are mixed together and agglomerated. 1. A catalyzed particulate filter comprising:an exhaust gas passage wall on which particulates in exhaust gas are to be collected; anda catalyst layer located on the exhaust gas passage wall and including Ce-containing composite oxide, Zr-containing composite oxide containing no Ce, activated alumina, and catalytic metals, whereinthe catalytic metals include Rh and Pt,the Ce-containing composite oxide included in the catalyst layer is in a state of Rh-doped Ce-containing composite oxide particles containing Zr and Nd, doped with Rh as one of the catalytic metals, and having an oxygen storage/release capacity,the Rh-doped Ce-containing composite oxide particles are loaded with Pt as one of the catalytic metals,the Zr-containing composite oxide is Zr-containing composite oxide containing Nd and Pr and having an oxygen ion conduction,the Zr-containing composite oxide and the activated alumina included in the catalyst layer are in a state of mixed particles in which Zr-containing composite oxide particles and activated alumina particles are mixed together and agglomerated,the mixed particles are loaded with Pt as one of the catalytic metals, andthe Rh-doped Ce-containing composite oxide particles and the mixed particles are mixed such that a mass ratio among the Zr-containing composite oxide, the activated alumina, and the Rh-doped Ce-containing composite oxide is within a range enclosed by point A (18+3/4, 6+1/4, 75), point B (6+1/4, 18+3/4, 75), ...

Exhaust gas purifying catalyst

A catalyst comprises an HC trapping material that is capable of trapping HC in an exhaust gas under low temperatures and releasing HC with a raise in temperature and catalytic material containing a Ce-Pr double oxide capable of oxidizing and purifying HC from the HC trapping material with a high efficiency.

Exhaust gas component purification catalytic material and catalyzed particulate filter with the catalytic material

An exhaust gas component purification catalytic material 1 for use in removal of particulates in an exhaust gas through combustion includes: composite oxide particles 2 containing zirconium and neodymium and not containing cerium; and praseodymium oxide particles 3 in contact with the composite oxide particles 2.

Heat-insulating structure of member facing engine combustion chamber, and process for producing same

A heat-insulating layer exhibiting high resistance to cracks, peeling, deformation, and gasoline and high heat insulation is obtained on the wall surface of an engine member (19). First, a heat insulator layer including a silicone-based resin and hollow particles containing a Si-based oxide is formed on a wall surface of the engine member (19). Then, Si-based oxide is produced through oxidation of a silicone-based resin in at least part of the surface of the heat insulator layer by heating the surface of the heat insulator layer. Thereafter, a catalytic metal is added to the silicone-based resin in the surface of the heat insulator layer and/or Si-based oxide derived from the hollow particles. Using the catalytic metal as nuclei, electroless plating is performed. In this manner, a heat-insulating layer (21) in which the surface of the heat-insulating film (27) is covered with a plating film (29) is obtained.

CATALYTIC MATERIAL, PRODUCTION METHOD THEREFOR, AND DIESEL PARTICULATE FILTER

Disclosed is a catalytic material for removing diesel particulates, which comprises a composite oxide which contains zirconium as a primary component and a rare-earth metal except for cerium and yttrium. The composite oxide has a crystallite diameter of 13 nm to 40 nm.

Exhaust gas purification catalytic material and method for fabricating the same

The present invention relates to an exhaust gas purification catalytic material containing: (a) a mixed oxide containing Ce and Zr for storing and releasing oxygen; and (b) a precious metal catalyst made of one or more kinds of precious metals. The precious metal catalyst comprises a first precious metal catalyst component placed between atoms, at crystal lattice points and/or at oxygen defect sites of the mixed oxide and a second precious metal catalyst component loaded on the surface of the mixed oxide, thereby improving the thermal resistance, oxygen storage capacity and exhaust gas conversion performance of the catalytic material.

Exhaust gas purification catalyst

A Ce-Zr mixed oxide is employed as an oxygen storage component for a lean-NOx catalyst, and catalytic precious metal atoms are placed at and/or between crystal lattice points of the mixed oxide. This structure prevents the sintering of the precious metal and accelerates movement of oxygen ions in each of crystallites of the Ce-Zr mixed oxide to increase the oxygen storage/release amount of the mixed oxide, which enhances the NOx removal performance of the catalyst.

Exhaust gas purifying catalyst

Disclosed is an exhaust gas purifying catalyst, which comprises a CeZr-based composite oxide capable of maintaining a hollow structure to ensure an oxygen absorbing/releasing capability, even after being exposed to high-temperature exhaust gas. The exhaust gas purifying catalyst comprises a honeycomb-shaped substrate, and a catalyst layer formed on a surface of the substrate. The catalyst layer contains a composite oxide which includes cerium (Ce) and zirconium (Zr) and has a hollow structure, and a catalytic metal supported by the composite oxide. The composite oxide having the hollow structure includes, in a state after being subjected to a thermal aging in Air at 1000° C. for 24 hours, a particle with a shape having an outer diameter of 750 to 1000 nm and a shell thickness of 80 to 120 nm.

Exhaust gas purifying catalyst

An exhaust gas purifying catalyst comprising: a honeycomb-like substrate disposed in an exhaust passage for an engine; and a catalytic layer formed on a cell wall of said substrate, said catalytic layer including a mixed oxide which contains Ce (cerium) and Zr (zirconium), and retains a catalytic noble metal in such a manner that said noble metal atoms are located at crystal lattice points or between the lattice points of the mixed oxide, wherein said mixed oxide includes a first mixed oxide containing CeO2 in a mass greater than that of ZrO2, and a second mixed oxide containing ZrO2 in a mass greater than that of CeO2.

PARTICULATE FILTER

Disclosed is a particulate filter 10, which comprises a filter body 8 including a plurality of filter segments F1, F2 joined to each other by a joining material 7, wherein each of the filter segments includes a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, and a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction. The filter segments include a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells, and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells. The present invention can keep the central region of the particulate filter from becoming overheated during a ...

Device for purifying exhaust gas, method for purifying exhaust gas, catalyst for purifying exhaust gas, and method for manufacturing exhaust gas purifying catalyst

A catalyst ( 25 ) for lowering NOx concentration in an exhaust gas is disposed in an exhaust gas passage ( 22 ) of an engine ( 1 ). The catalyst ( 25 ) is composed of a catalyst layer ( 25 b ) formed on a substrate ( 25 a ). A NOx absorber that absorbs NOx when an oxygen concentration in the exhaust gas is high and releases NOx when the oxygen concentration drops, and a precious metal for reducing NOx are supported on a support material as catalyst components, and the NOx absorber includes Ba, K, Sr, and Mg. By lowering the oxygen concentration in the exhaust gas and raising a temperature of the NOx absorber when sulfur component is absorbed excessively in the NOx absorber, it is possible to regenerate the catalyst from the S poisoning.

Corrosion resistance test method for coated metal material and water-containing material for use therein

A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material has a viscosity at 65° C. of 10 mPa·s or more to 40 mPa·s or less.

EXHAUST GAS PURIFICATION CATALYST AND MANUFACTURING METHOD THEREOF

In an exhaust gas purification catalyst that contains an oxygen storage component containing Ce and Zr, alumina and a catalytic metal, a plurality of primary particles of the oxygen storage component and a plurality of primary particles of the alumina agglomerate to form each of mixed oxide particles and the catalytic metal includes Pd doped in the oxygen storage component particles to constitute each of the oxygen storage component particles with Ce and Zr and exposed at the surfaces of the oxygen storage component particles and Pd adhered to the surfaces of the oxygen storage component particles and the surfaces of the alumina particles.

Particulate filter

Disclosed is a particulate filter 10, which comprises a filter body 8 including a plurality of filter segments F1, F2 joined to each other by a joining material 7, wherein each of the filter segments includes a plurality of inflow cells each having a closed end on a downstream side in an exhaust-gas flow direction, and a plurality of outflow cells each having a closed end on an upstream side in the exhaust-gas flow direction. The filter segments include a first filter segment located in a central region of the particulate filter and designed to form each of the inflow cells to have an opening area approximately equal to that of each of the outflow cells, and a second filer segment located in at least a part of an outer peripheral region of the particulate filter and designed to form each of the inflow cells to have an opening area greater than that of each of the outflow cells. The present invention can keep the central region of the particulate filter from becoming overheated during a ...

Exhaust gas purifying catalyst, method for producing same, and exhaust gas purification method using same

An exhaust gas purify catalyst includes a substrate (1), an oxidation catalyst layer (2) formed on the substrate (1) and containing zeolite and at least one catalytic metal, an LNT layer (3) formed on the oxidation catalyst layer (2) and containing an NOx storage material and at least one catalytic metal, and an NOx reduction layer (4) formed on the LNT layer (3) and containing Rh acting as a catalytic metal and at least one of alumina or zirconia, wherein the NOx reduction layer (4) has a larger content of Rh than that in each of the oxidation catalyst layer (2) and the LNT layer (3).

Particulate filter

Disclosed is a particulate filter, which is adapted to be disposed in an exhaust passage of an engine to trap particulate matter contained in exhaust gas discharged from the engine. The particulate filter comprises a filter body having a porous partition wall which defines a plurality of exhaust gas channels allowing the exhaust gas to pass therethrough, and a catalyst layer formed on a surface of the porous partition wall. The catalyst layer includes a Zr-based composite oxide which contains zirconium (Zr), and a rare-earth metal except cerium, wherein a content ratio of an oxide of the non-cerium rare-earth metal to a total amount of ZrO2 and the oxide of the non-cerium rare-earth metal in the Zr-based composite oxide is set in the range of greater than 33 mol % to less than 40 mol %. The particulate filter of the present invention can achieve a higher PM burning rate to burn PM within a shorter period of time. In addition, the higher PM burning rate makes it possible to provide enhanced ...

Engine control device

An engine control device, which is adapted for an engine provided with an NOx-absorbing material arranged in an exhaust passage for absorbing NOx in an oxygen-rich atmosphere, and releasing NOx and absorbing sulfur content when the oxygen concentration drops, includes a discriminator for judging whether the amount of sulfur absorbed by the NOx-absorbing material has reached a prescribed quantity, and a reductant concentration controller which increases the temperature of the NOx-absorbing material by decreasing a quantity related to EGR ratio for desulfurizing the NOx-absorbing material based on the result of judgment made by the discriminator. When the quantity related to the EGR ratio is decreased, the temperature of exhaust gas increases. Consequently, the temperature of the NOx-absorbing material increases and the sulfur in the NOx-absorbing material is freed and released.

Exhaust gas purifying catalyst and system and method of producing the catalyst

An exhaust gas purifying system and a catalyst used for the system prevents NOx absorbent from being poisoned by a sulfur compound to keep NOx absorption performance. The catalyst has at least an inner and an outer layer on a support material, the inner layer having NOx absorbent capable of absorbing NOx and a sulfur compound in the exhaust gas produced from combustion of a lean fuel mixture, releasing the NOx into the exhaust gas and substantially stopping absorbing the sulfur compound when a rich mixture is burnt, and the outer layer having a sulfur compound absorbent capable of absorbing the sulfur compound in the exhaust gas produced from combustion of a lean fuel mixture and capable of discharging the sulfur compound into the exhaust gas when a rich fuel mixture is burnt while the engine operates in a lean-burn zone. NOx is absorbed by the NOx absorbent in the inner layer and the sulfur compound is adsorbed in the sulfur compound absorbent in the outer layer. Therefor the NOx absorbent ...

Exhaust gas purifying catalyst

An exhaust gas purifying catalyst comprising: a honeycomb-like substrate disposed in an exhaust passage for an engine; and a catalytic layer formed on a cell wall of said substrate, said catalytic layer including a mixed oxide which contains Ce (cerium) and Zr (zirconium), and retains a catalytic noble metal in such a manner that said noble metal atoms are located at crystal lattice points or between the lattice points of the mixed oxide, wherein said mixed oxide includes a first mixed oxide containing CeO2 in a mass greater than that of ZrO2, and a second mixed oxide containing ZrO2 in a mass greater than that of CeO2.

Exhaust gas purification system

An upstream catalyst (3) and a downstream catalyst (4) are disposed upstream of a particulate filter (5) in an exhaust passage of a diesel engine. The downstream catalyst (4) has a larger amount of support material for supporting catalytic metal than the upstream catalyst (3). This enhances the efficiency of oxidation reactions of HC in the catalysts to raise the temperature of exhaust gas flowing into the filter (5).

Exhaust gas purification catalyst and production method thereof

This catalyst includes a lower catalytic layer 2 having catalytic ability to oxidize HC and CO and an upper catalytic layer 3 having catalytic ability to reduce NOx. The lower catalytic layer 2 contains Pt and Pd acting as catalytic metals, zeolite, a Ce-containing oxide, and activated alumina, and the upper catalytic layer 3 contains activated alumina loading an Rh-doped Ce-containing oxide and an NOx storage material.

DIESEL PARTICULATE FILTER

Walls forming exhaust gas channels in a DPF are coated with a catalyst layer for promoting the burning of particulates trapped thereon. The catalyst layer contains alumna and a composite oxide containing Ce as a major component and rare earth metal other than Ce or alkali earth metal. Pt is loaded on the alumina and the composite oxide.

Exhaust gas catalytic converter

The present invention is intended to ensure the improvement in catalytic performance of an exhaust gas catalytic converter, which is an essential performance thereof, ensure the thermal resistance thereof and downsize the converter, i.e., improve the arrangeability thereof. The exhaust gas catalytic converter has an upstream catalyst and a downstream catalyst which are arranged in upstream and downstream sides of an engine exhaust passage through which exhaust gas flows. Each of the upstream catalyst and the downstream catalyst contains an oxygen storage component. The oxygen storage component in the upstream catalyst has a structure in which Rh atoms are placed at or between crystal lattice points of a mixed oxide containing Ce and Zr and has a larger amount of oxygen storage than the oxygen storage component in the downstream catalyst under the same temperature conditions.

Particulate filter regenerating system

Disclosed is a particulate filter regenerating system which comprises a fuel injection device (7) adapted to inject fuel into a combustion chamber of an engine body (1), and an exhaust gas temperature-adjusting device (33) adapted, when a PM deposit amount which is an amount of particulate matter (PM) deposited in a DPF (particulate filter) 13 provided in an exhaust passage of an engine, reaches a predetermined value X, to cause the fuel injection device (7) to perform a post-injection for injecting fuel into the combustion chamber during an expansion stroke of the engine, so as to execute a filter regeneration process of raising a temperature of exhaust gas flowing into the DPF 13 to burn the deposited PM. The exhaust gas temperature-adjusting device (33) is operable to cause the fuel injection device (7) to stop performing the post-injection in a stage where a PM burning amount which is an amount of PM burned through the filter regeneration process, is less than an initial PM deposit ...

Material for exhaust gas purifying catalyst, exhaust gas purifying catalyst made of the material and method for producing the exhaust gas purifying catalyst

A catalytic base material for an exhaust gas purifying catalyst is produced by impregnating ceria powders with a barium contained solution and heating the ceria particles at approximately 400 to 1100° C. to create and accumulate barium oxides fixed to surfaces of the ceria particles.

Exhaust gas purification catalyst

An exhaust gas purification catalyst comprises: an oxygen storage component constituted by a mixed oxide containing cerium and zirconium; and a catalytic metal carried on the oxygen storage component. The oxygen storage component is in the form of hollow secondary particles each formed so that primary particles of an average particle size of less than 10 nm cohere into a shell.

Exhaust gas purification catalyst and method for manufacturing same

An exhaust gas purification catalyst is disposed in an exhaust gas channel of an engine and includes a catalytic layer 22 provided on a substrate 21 . The catalytic layer 22 contains multiple types of γ-aluminas 23 and 24 which are different in composition and Pt 25 loaded on the multiple types of γ-aluminas 23 and 24.

Physical property evaluation method and device

A physical property evaluation method is the method for evaluating physical properties of a film-shaped measurement target object by means of an electrochemical method, the method including the step of causing an electrolytic solution to contact a front surface of the measurement target object. The speed of penetration of the electrolytic solution into the measurement target object is adjusted in such a manner that the levels of the front-side temperature and the back-side temperature of the measurement target object and a difference between the front-side temperature and the back-side temperature of the measurement target object are adjusted.

Catalytic material and catalyst for purifying exhaust gas component

Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of Nd2O3/(ZrO2+Nd2O3+RO) is 3 mol % or more, and a ratio of (Nd2O3+RO)/(ZrO2+Nd2O3+RO) is 33 mol % or less. The catalytic material of the present invention can oxidize/burn PM in a short period of time, while suppressing CO emission during the burning of the PM, and can achieve further enhanced NOx conversion performance.

Exhaust gas purifying catalyst

An exhaust gas purifying catalyst includes a carrier and a catalyst layer provided on the carrier. The catalyst layer includes active Al₂O₃ on which a noble metal is carried, an oxygen storage agent on which Rh is carried, Al₂O₃ coated with ZrO₂ on which Rh is carried, and a binder material.

Exhaust gas catalytic conversion system

An upstream catalyst and a downstream catalyst are disposed in an exhaust passage of an engine. The downstream catalyst contains in the same catalyst layer thereof. Rh-doped CeZrNd mixed oxide particles on which Rh is supported and active alumina particles on which Pt is supported. The upstream catalyst is a three-way catalyst containing an oxygen storage component having a lower oxygen storage capacity than the Rh-doped CeZrNd mixed oxide.

Control device of hydrogen engine

There are provided NOx trap catalyst to trap and release NOx based on air-fuel ratio, first fuel supply means for supplying gasoline, second fuel supply means for supplying hydrogen, engine operation detecting means for detecting engine operating condition, fuel ratio changing means for changing the ratio of gasoline and hydrogen, NOx release determining means for determining whether it is required for the NOx to be released based on a state of the trapped NOx, NOx releasing means for releasing the NOx trapped by making the air-fuel ratio rich when the NOx releasing requirement is determined, gasoline ratio increasing means for increasing the ratio of gasoline when NOx releasing requirement is determined and the air-fuel-ratio rich control is executed. Accordingly, improper vibrations or noises can be restrained from occurring when the rich air-fuel-ratio control is executed to release the trapped NOx from the NOx trap catalyst.

Corrosion resistance test method for coated metal material and water-containing material for use therein

A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material comprises water, an electrolyte material, and kaolinite, and comprises the kaolinite at 36.0 mass % or more to 45.0 mass % or less.

Exhaust gas purification catalyst

Catalytic converter comprises a carrier having exhaust gas passages therein, a lower catalytic layer coated over the carrier and comprising hollow oxide powder loaded with catalytic metal, and an upper catalytic layer coated over the lower catalytic layer, directly exposed to exhaust gas flowing in the exhaust gas passages and comprising solid oxide powder loaded with catalytic metal. The hollow oxide powder may be ceria or alumina base oxide. Further it may be mixed oxide such as Ce—Zr mixed oxide or La contained alumina as well.

Catalyst for purifying exhaust gas and method for purifying exhaust gas with the catalyst

The present invention provides a catalyst for purifying an exhaust gas having excellent heat resistance and a small level of deterioration of the purifying ability of the exhaust gas even if the catalyst is exposed to a high temperature atmosphere for a long time. The catalyst for purifying an exhaust gas comprises a catalytic metal for oxidizing HC and CO and reducing NO x for purification, and a mixed oxide containing Ce, Zr and Sr.

EXHAUST GAS PURIFICATION CATALYST AND PRODUCTION METHOD THEREOF

This catalyst includes a lower catalytic layer having catalytic ability to oxidize HC and CO and an upper catalytic layer having catalytic ability to reduce NO. The lower catalytic layer contains Pt and Pd acting as catalytic metals, zeolite, a Ce-containing oxide, and activated alumina, and the upper catalytic layer contains activated alumina loading an Rh-doped Ce-containing oxide and an NOstorage material. 1. An exhaust gas purification catalyst comprising:a lower catalytic layer having catalytic ability to oxidize HC and CO on a substrate; and{'sub': 'x', 'an upper catalytic layer having catalytic ability to reduce NOon top of, or above, the lower catalytic layer, wherein'}the lower catalytic layer contains Pt and Pd acting as catalytic metals, zeolite, Ce-containing oxide, and activated alumina, and{'sub': 'x', 'the upper catalytic layer contains activated alumina loading an Rh-doped Ce-containing oxide and an NOstorage material.'}2. The exhaust gas purification catalyst of claim 1 , whereinthe lower catalytic layer includes a first oxidation catalyst layer containing activated alumina loading Pt and Pd and a Ce-containing oxide loading Pt and Pd, and a second oxidation catalyst layer containing zeolite loading Pt and Pd, andthe second oxidation catalyst layer is disposed on the first oxidation catalyst layer.3. The exhaust gas purification catalyst of claim 1 , wherein{'sub': 'x', 'an intermediate catalytic layer is provided between the lower and upper catalytic layers, the intermediate catalytic layer containing Pt and Rh acting as catalytic metals, activated alumina, a Ce-containing oxide and an NOstorage material, and containing no Pd.'}4. The exhaust gas purification catalyst of claim 2 , wherein{'sub': 'x', 'an intermediate catalytic layer is provided between the lower and upper catalytic layers, the intermediate catalytic layer containing Pt and Rh acting as catalytic metals, activated alumina, a Ce-containing oxide and an NOstorage material, and ...

Exhaust gas purification catalyst

An exhaust gas purification catalytic material for purifying exhaust gas from an engine includes ZrLaY composite oxide containing ZrO 2 as a main component, 2% by mass or more and 10% by mass or less of La 2 O 3 , and 2% by mass or more and 20% by mass or less of Y 2 O 3 , and Rh is loaded on the composite oxide.

CORROSION RESISTANCE TEST METHOD FOR COATED METAL MATERIAL AND WATER-CONTAINING MATERIAL FOR USE THEREIN

A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material comprises water, an electrolyte material, and kaolinite, and comprises the kaolinite at 36.0 mass % or more to 45.0 mass % or less. 1. A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film provided on the metal base , the method comprising the steps of:disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material contained in the one water-containing material holder or in each of the water-containing material holders, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; andsupplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, respectively from a current supplier provided on the external circuit to bring corrosion of the coated metal material to progress, whereinthe water-containing material comprises water, an electrolyte material, and kaolinite, andthe content of the kaolinite in the water- ...

CORROSION RESISTANCE TEST METHOD FOR COATED METAL MATERIAL AND WATER-CONTAINING MATERIAL FOR USE THEREIN

A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material has a viscosity at 65° C. of 10 mPa·s or more to 40 mPa·s or less. 1. A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film provided on the metal base , the method comprising the steps of:disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material contained in the one water-containing material holder or in each of the water-containing material holders, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; andsupplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, respectively from a current supplier provided on the external circuit to bring corrosion of the coated metal material to progress, whereinthe water-containing material has a viscosity at 65° C. of 10 mPa·s or more to 40 mPa·s or less.2. The method of claim 1 , whereinthe water-containing material has a viscosity at 65° C. of 20 mPa·s or ...

EXHAUST GAS PURIFICATION SYSTEM AND EXHAUST GAS PURIFICATION METHOD

Provided is a system where a composite catalyst into which an LNT catalyst and an oxidation catalyst are combined, a catalyzed particulate filter, an injector configured to inject a urea water solution into an exhaust gas passage, and an SCR catalyst are arranged in this order in an upstream-to-downstream direction of the flow of the exhaust gas. 1. An exhaust gas purification system capable of treating NOx and particulates contained in exhaust gas from an engine , the system comprising:a composite catalyst into which an LNT catalyst which temporarily traps the NOx and reduces the NOx, and an oxidation catalyst which oxidizes HC, CO and NO contained in the exhaust gas are combined;a catalyzed filter including a filter which collects the particulates and on which a catalyst for combusting the particulates is loaded;an SCR catalyst which selectively reduces the NOx in the presence of a reducing agent; andan injector which injects the reducing agent or a precursor of the reducing agent into an exhaust gas passage of the engine so as to supply the reducing agent to the SCR catalyst, whereinthe composite catalyst, the catalyzed filter, the injector, and the SCR catalyst are arranged in the exhaust gas passage in this order in an upstream-to-downstream direction of a flow of the exhaust gas.2. The system of claim 1 , wherein{'sub': '3', 'the injector injects NHas the reducing agent or urea as the precursor of the reducing agent into the exhaust gas passage, and'}{'sub': '3', 'the system further includes an oxidation catalyst which oxidizes NHand/or derivatives thereof and which is arranged downstream from the SCR catalyst in the exhaust gas passage.'}3. The system of claim 1 , whereinthe LNT catalyst of the composite catalyst includes a catalyst component which oxidizes NO contained in the exhaust gas, a NOx trap material which traps NOx contained in the exhaust gas, and a catalyst component which reduces the NOx trapped by the NOx trap material,the oxidation catalyst of ...

THERMOPLASTIC RESIN MOULDED ARTICLE, AND PRODUCTION METHOD FOR THERMOPLASTIC RESIN MOULDED ARTICLE

A thermoplastic resin molding according to the present invention contains carbon fibers. An amount of the carbon fibers falls within a range from 0.4 mass % to 10 mass %. An average length of the carbon fibers falls within a range from 0.5 mm to 15 mm. The thermoplastic resin is polypropylene. The polypropylene includes polypropylene containing at least one of a carboxyl group, a carbonyl group, or a hydroxyl group. Surfaces of the carbon fibers contain at least one of a carboxyl group, a carbonyl group, a hydroxyl group, or a Cl group. 1. A thermoplastic resin molding containing carbon fibers , whereinan amount of the carbon fibers falls within a range from 0.4 mass % to 10 mass %,an average length of the carbon fibers falls within a range from 0.5 mm to 15 mm,the thermoplastic resin is polypropylene,the polypropylene includes polypropylene containing at least one of a carboxyl group, a carbonyl group, or a hydroxyl group, andsurfaces of the carbon fibers contain at least one of a carboxyl group, a carbonyl group, a hydroxyl group, or a Cl group.2. The thermoplastic resin molding of claim 1 , whereinthe thermoplastic resin contains the polypropylene containing at least one of the carboxyl group or the carbonyl group, andthe surfaces of the carbon fibers contain at least one of the carboxyl group, the carbonyl group, and the hydroxyl group.3. The thermoplastic resin molding of claim 2 , whereinthe thermoplastic resin contains resin different from the polypropylene containing at least one of the carboxyl group or the carbonyl group, andthe resin different from the polypropylene contains at least one of a carboxyl group, a carbonyl group, or a hydroxyl group.4. The thermoplastic resin molding of claim 1 , wherein the thermoplastic resin containsthe polypropylene containing at least one of the carboxyl group or the carbonyl group, andanother resin containing, as a functional group, at least one of elements N, O, F, S, Cl, Br, or I, andthe surfaces of the carbon fibers ...

Exhaust gas purification catalyst and method for producing the same

An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes Rh-supporting Zr-based composite oxide in which Rh6 is supported on Zr-based composite oxide containing Zr and a rare earth metal except Ce. The Rh-supporting Zr-based composite oxide has been previously subjected to a reduction treatment.

EXHAUST GAS PURIFICATION CATALYST AND METHOD FOR PRODUCING THE SAME

An exhaust gas purification catalyst includes a Rh-containing catalyst layer provided on a base material. The Rh-containing catalyst layer includes a binder material of Rh-doped CeZr-based composite oxide containing Ce and Zr and doped with Rh. The binder material has been previously subjected to a reduction treatment. 1. A method for producing an exhaust gas purification catalyst in which a Rh-containing catalyst layer is located on a base material , the method comprising:providing a Pd-containing catalyst layer on a surface of the base material;preparing Rh-supporting Zr-based composite oxide in which Rh is supported on Zr-based composite oxide containing Zr and a rare earth metal except Ce, Rh-supporting CeZr-based composite oxide in which Rh is supported on CeZr-based composite oxide containing Zr and Ce, and Rh-doped CeZr-based composite oxide obtained by dissolving Rh in CeZr-based composite oxide serving as a binder material;performing a heat treatment on the Rh-doped CeZr-based composite oxide at a temperature of 500° C. to 800° C., both inclusive, in a reduction atmosphere containing CO, thereby preparing a Rh-doped binder material;mixing the Rh-supporting Zr-based composite oxide, the Rh-supporting CeZr-based composite oxide, and the Rh-doped binder material together to produce a mixture, and making the mixture into slurry, thereby preparing a Rh-containing catalytic material; andproviding the Rh-containing catalytic material on a surface of the Pd-containing catalyst layer.2. An exhaust gas purification catalyst in which a Rh-containing catalyst layer is provided on a base material , whereinthe Rh-containing catalyst layer includes an Rh-doped binder in which Rh is contained in CeZr-based composite oxide containing Ce and Zr, andthe Rh-doped binder material has been previously subjected to a reduction treatment.3. The exhaust gas purification catalyst of claim 2 , whereinthe reduction treatment is performed at a temperature of 500° C. to 800° C., both ...

Exhaust gas purification catalyst and method for manufacturing same

An exhaust gas purification catalyst is disposed in an exhaust gas channel of an engine and includes a catalytic layer 22 provided on a substrate 21 . The catalytic layer 22 contains multiple types of γ-aluminas 23 and 24 which are different in composition and Pt 25 loaded on the multiple types of γ-aluminas 23 and 24.

HEAT-INSULATING STRUCTURE OF MEMBER FACING ENGINE COMBUSTION CHAMBER, AND PROCESS FOR PRODUCING SAME

A heat-insulating layer exhibiting high resistance to cracks, peeling, deformation, and gasoline and high heat insulation is obtained on the wall surface of an engine member (). First, a heat insulator layer including a silicone-based resin and hollow particles containing a Si-based oxide is formed on a wall surface of the engine member (). Then, Si-based oxide is produced through oxidation of a silicone-based resin in at least part of the surface of the heat insulator layer by heating the surface of the heat insulator layer. Thereafter, a catalytic metal is added to the silicone-based resin in the surface of the heat insulator layer and/or Si-based oxide derived from the hollow particles. Using the catalytic metal as nuclei, electroless plating is performed. In this manner, a heat-insulating layer () in which the surface of the heat-insulating film () is covered with a plating film () is obtained. 1. A heat-insulating structure of a member facing an engine combustion chamber , the heat-insulating structure comprising:a heat-insulating layer including a silicone-based resin and hollow particles and located on a combustion chamber wall surface of the member facing the engine combustion chamber, whereinthe hollow particles contain a Si-based oxide,{'sub': '2', 'the heat-insulating layer includes a base layer in which the hollow particles are dispersed in a base material of the silicone-based resin and also includes a surface layer containing SiOor a plating film on the base layer, and'}the silicone-based resin has a three-dimensional structure.2. The heat-insulating structure of claim 1 , wherein the heat-insulating layer includes a plating film claim 1 , and a metal serving as nuclei for depositing the plating film is supported on Si-based oxide obtained by partially oxidizing the silicone-based resin and/or the Si-based oxide of the hollow particles.3. The heat-insulating structure of claim 1 , whereinthe silicone-based resin is a silicone-based resin composition ...

EXHAUST GAS PURIFYING CATALYST, METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION METHOD USING SAME

An exhaust gas purify catalyst includes a substrate (), an oxidation catalyst layer () formed on the substrate () and containing zeolite and at least one catalytic metal, an LNT layer () formed on the oxidation catalyst layer () and containing an NOstorage material and at least one catalytic metal, and an NOreduction layer () formed on the LNT layer () and containing Rh acting as a catalytic metal and at least one of alumina or zirconia, wherein the NOreduction layer () has a larger content of Rh than that in each of the oxidation catalyst layer () and the LNT layer (). 1. An exhaust gas purifying catalyst comprising:a substrate;an oxidation catalyst layer formed on the substrate, and containing zeolite and at least one catalytic metal;{'sub': x', 'x, 'a lean NOtrap (LNT) layer formed on the oxidation catalyst layer, and containing an NOstorage material and at least one catalytic metal;'}{'sub': 'x', 'an NOreduction layer formed on the LNT layer, and containing Rh acting as a catalytic metal and at least one of alumina or zirconia, wherein'}{'sub': 'x', 'the NOreduction layer has a larger content of Rh than in each of the oxidation catalyst layer and the LNT layer.'}2. The exhaust gas purifying catalyst of claim 1 , whereinthe oxidation catalyst layer includes a first oxidation catalyst layer containing alumina and ceria, and a second oxidation catalyst layer formed on the first oxidation catalyst layer and containing zeolite.3. The exhaust gas purifying catalyst of claim 1 , whereinthe LNT layer further contains alumina and ceria.4. The exhaust gas purifying catalyst of claim 2 , whereinthe LNT layer further contains alumina and ceria.5. The exhaust gas purifying catalyst of claim 1 , whereinzeolite in the oxidation catalyst layer has an average particle size of 0.5 μm or more and 4.8 μm or less.6. The exhaust gas purifying catalyst of claim 2 , whereinzeolite in the oxidation catalyst layer has an average particle size of 0.5 μm or more and 4.8 μm or less.7. The ...

STATE ESTIMATION DEVICE, METHOD AND COMPUTER PROGRAM THEREFOR

A state of a user of a mobile terminal having a display for displaying an image may be estimated. A sightline detection detector detects a user's sightline of a mobile terminal that has a display for displaying an image. Processing circuitry is configured to estimate a state of the user including an attention function degraded state based on motion of the user's sightline with respect to the image displayed on the display of the mobile terminal. 1. A device that estimates a state of a user of a mobile terminal having a display for displaying an image , the device comprising:a sightline detector that detects a sightline of the user; andprocessing circuitry configured to estimate the state of the user including an attention function degraded state based on motion of the sightline of the user with respect to the image displayed on the display.2. The device according to claim 1 , whereinprocessing circuitry is configured to estimate the state of the user on condition that a main task of the user corresponds to an operation of the mobile terminal, and otherwise does not estimate the state of the user.3. The device according to claim 2 , wherein determine a bottom-up index value during estimating the state of the user based on the image displayed on the display and the sightline of the user detected by the sightline detector, the bottom-up index value being correlated with an attention source amount that is correlated with bottom-up attention of the user with respect to the image; and', 'estimate the state of the user based on the bottom-up index., 'the processing circuitry is configured to4. The device according to claim 3 , wherein determine distribution of saliency in the image displayed on the display; and', 'derive the bottom-up index value based on the motion of the sightline of the user with respect to the distribution of the saliency in the image., 'the processing circuitry is configured to5. The device according to claim 4 , whereinprocessing circuitry is ...

PHYSICAL PROPERTY EVALUATION METHOD AND DEVICE

A physical property evaluation method is the method for evaluating physical properties of a film-shaped measurement target object by means of an electrochemical method, the method including the step of causing an electrolytic solution to contact a front surface of the measurement target object. The speed of penetration of the electrolytic solution into the measurement target object is adjusted in such a manner that the levels of the front-side temperature and the back-side temperature of the measurement target object and a difference between the front-side temperature and the back-side temperature of the measurement target object are adjusted. 1. A method for evaluating a physical property of a film-shaped measurement target object by means of an electrochemical method , comprising:a step of causing an electrolytic solution to contact a front surface of the measurement target object,wherein a speed of penetration of the electrolytic solution into the measurement target object is adjusted in such a manner that levels of a front-side temperature and a back-side temperature of the measurement target object and a difference between the front-side temperature and the back-side temperature of the measurement target object are adjusted.2. The physical property evaluation method according to claim 1 , whereinthe front-side temperature of the measurement target object is set higher than the back-side temperature.3. The physical property evaluation method according to claim 1 , whereinthe front-side temperature of the measurement target object is set higher than a temperature at which condensation of moisture in the measurement target object begins, andthe back-side temperature of the measurement target object is set lower than the temperature at which condensation of the moisture in the measurement target object begins.4. The physical property evaluation method according to claim 1 , further comprising:a step of arranging a first temperature adjustment section configured to ...

Catalyst supported on particulate filter

In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency.

Manufacture of camshaft

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

High toughness silicon nitride sintered body

Catalytic Material And Catalyst For Purifying Exhaust Gas Component

Thermoplastic resin moulded article, and production method for thermoplastic resin moulded article

A thermoplastic resin molding according to the present invention contains carbon fibers. An amount of the carbon fibers falls within a range from 0.4 mass % to 10 mass %. An average length of the carbon fibers falls within a range from 0.5 mm to 15 mm. The thermoplastic resin is polypropylene. The polypropylene includes polypropylene containing at least one of a carboxyl group, a carbonyl group, or a hydroxyl group. Surfaces of the carbon fibers contain at least one of a carboxyl group, a carbonyl group, a hydroxyl group, or a Cl group.

Corrosion resistance test method for coated metal material and water-containing material for use therein

A corrosion resistance test method for a coated metal material 1 that includes a steel sheet 2 and a surface treatment film 4 provided on the steel sheet 2, includes the steps of: disposing two water-containing material holders 11 each holding a water-containing material 6 to be in contact with the surface treatment film 4 and two electrodes 12 to be in contact with the water-containing material 6 held in each of the two water-containing material holders 11, and electrically connecting, with an external circuit 7, between the two electrodes 12; and supplying a current between one of the two electrodes 12 and the other, as an anode and a cathode, respectively from a current supplier 8 provided on the external circuit 7 to bring corrosion of the coated metal material 1 to progress. The water-containing material 6 comprises water, an electrolyte material, and kaolinite, and comprises the kaolinite at 36.0 mass% or more to 45.0 mass% or less.

Burned gas purifying catalyst

An exhaust gas emission control catalyst includes an under catalyst layer containing at least one of barium and lanthanum and an over catalyst layer containing an agent for absorbing water in a gas, at least one of the under catalyst layer and over catalyst layer containing catalytic metal.

Exhaust gas purifying catalyst

An exhaust gas purifying catalyst includes a carrier and a catalyst layer provided on the carrier. The catalyst layer includes active Al 2 O 3 on which a noble metal is carried, an oxygen storage agent on which Rh is carried, Al 2 O 3 coated with ZrO 2 on which Rh is carried, and a binder material.

Exhaust gas purifying catalyst and manufacturing method therefor

Dieser Katalysator umfasst eine untere katalytische Schicht 2 mit einer katalytischen Fähigkeit, HC und CO zu oxidieren, und eine obere katalytische Schicht 3 mit einer katalytischen Fähigkeit, NOx zu reduzieren. Die untere katalytische Schicht 2 enthält Pt und Pd, die als katalytische Metalle dienen, Zeolith, ein Ce-haltiges Oxid und aktiviertes Aluminiumoxid, und die obere katalytische Schicht 3 enthält aktiviertes Aluminiumoxid, das ein Rh-dotiertes Ce-haltiges Oxid lädt, und ein NOx-Speichermaterial. This catalyst comprises a lower catalytic layer 2 having a catalytic ability to oxidize HC and CO, and an upper catalytic layer 3 having a catalytic ability to reduce NOx. The lower catalytic layer 2 contains Pt and Pd serving as catalytic metals, zeolite, a Ce-containing oxide and activated alumina, and the upper catalytic layer 3 contains activated alumina charging a Rh-doped Ce-containing oxide, and NOx storage material.

Diesel particulate filter

【課題】ＤＰＦのパティキュレート燃焼温度を低下させる。 【解決手段】ＤＰＦの排気ガス流路壁面に、酸素イオン伝導性を有するＺｒＯ 2 -Ｙ 2 Ｏ 3 複酸化物を含有するコート層７を形成し、この複酸化物はＹ 2 Ｏ 3 を０．１質量％以上１５質量％以下含有するものとし、且つＰｔを担持させる。 【選択図】 図３

Beam welding equipment

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Method for purifying exhaust gas

(57)【要約】 【課題】ディーゼルエンジンの排気ガス中のＨＣ、ＣＯ 及びＳＯＦを低温で効率良く浄化できるようにする。 【解決手段】メゾポアを有する結晶質のシリケートにＰ ｔをその一部がメゾポア内に存するように担持させてお いて、上記排気ガスを上記メゾポア内に導入し、接触触 媒作用によって上記ＨＣ、ＣＯ及びＳＯＦを酸化させて 浄化する。

Diesel particulate filter

A filter (1) for trapping particulate matter in an exhaust gas is disposed in an exhaust passage of a diesel engine, and a washcoat layer (7) containing mixed oxide particles including Ce and Zr is formed on wall surfaces of exhaust gas channels (2, 3, 6) in the filter. The washcoat layer contains, as catalytic precious metals for burning off the trapped particulate matter by oxidation, Rh atoms placed at and/or between crystal lattice points of each particle of the mixed oxide and existing inside of and on the surface of the mixed oxide particle, and Pt atoms placed at and/or between crystal lattice points of each particle of the mixed oxide and existing on the surface of the mixed oxide particle.

Exhaust gas purification system of an internal combustion engine

Method, computer programme and control device for the operation of an internal combustion engine

There are provided NOx trap catalyst to trap and release NOx based on air-fuel ratio, first fuel supply means for supplying gasoline, second fuel supply means for supplying hydrogen, engine operation detecting means for detecting engine operating condition, fuel ratio changing means for changing the ratio of gasoline and hydrogen, NOx release determining means for determining whether it is required for the NOx to be released based on a state of the trapped NOx, NOx releasing means for releasing the NOx trapped by making the air-fuel ratio rich when the NOx releasing requirement is determined, gasoline ratio increasing means for increasing the ratio of gasoline when NOx releasing requirement is determined and the air-fuel-ratio rich control is executed. Accordingly, improper vibrations or noises can be restrained from occurring when the rich air-fuel-ratio control is executed to release the trapped NOx from the NOx trap catalyst.

Catalyst for the purification of burned gases

Katalysatorkonstruktion zum Reduzieren von Stickoxiden (NOx), Kohlenwasserstoffen (HC) und Kohlenmonoxid (CO) in einem Abgas von einem Fahrzeugmotor zu Stickstoff (N 2 ), Wasser (H 2 O) und Kohlendioxid (CO 2 ), wobei die Katalysatorkonstruktion einen Katalysatorträger, eine auf dem Katalysatorträger aufgebrachte Katalysatorunterschicht, wobei die Katalysatorunterschicht mindestens Barium enthält, eine auf der Katalysatorunterschicht aufgebrachte Katalysatoroberschicht, wobei die Katalysatoroberschicht ein Mittel für die Absorption von Wasser in einem Gas enthält, wobei das Wasserabsorptionsmittel ein kristallines Metallsilikat umfaßt, und wobei die Katalysatoroberschicht eines oder mehrere katalytische Metalle, ausgewählt aus der Edelmetallgruppe der katalytischen Materialien Platin, Rhodium und Iridium, enthält. Catalyst construction for reducing nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO) in an exhaust gas from a vehicle engine to nitrogen (N 2 ), water (H 2 O) and carbon dioxide (CO 2 ), wherein the catalyst construction is a catalyst support, a catalyst undercoat applied to the catalyst support, wherein the catalyst undercoat contains at least barium, a catalyst topcoat applied to the catalyst undercoat, the catalyst topcoat containing a means for absorbing water in a gas, the water absorbent comprising a crystalline metal silicate, and wherein the catalyst topcoat comprises one or more catalytic metals selected from the noble metal group of platinum, rhodium, catalytic materials and iridium.

Formation of wear resistant layer on surface of iron-base member

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Exhaust gas purification catalyst and manufacturing method thereof

In an exhaust gas purification catalyst that contains an oxygen storage component containing Ce and Zr, alumina and a catalytic metal, a plurality of primary panicles of the oxygen storage component and a plurality of primary particles of the alumina agglomerate to form each of mixed oxide particles and the catalytic metal includes Pd doped in the oxygen storage component particles to constitute each of the oxygen storage component particles with Ce and Zr and exposed at the surfaces of the oxygen storage component particles and Pd adhered to the surfaces of the oxygen storage component particles and the surfaces of the alumina particles.

Method for forming wear resistant layer on surface of ferrous member

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Emission control catalyst and emission control system

Catalyst for cleaning exhaust gas of engine

【課題】Ｏ ２ ストレージの性能を高め、三元触媒の低温活性の向上を図る。 【解決手段】触媒金属とＯ ２ ストレージ材とを含有する三元触媒において、Ｏ ２ ストレージ材として、ＡＢＯ ３ （但し、ＡはＬａ及びＳｒであり、ＢはＦｅ及びＣｏのうちの少なくとも１種である。）で表されるペロブスカイト型複酸化物を用いる。 【選択図】　　図３

Catalyst for purifying exhaust gas and manufacturing method thereof

Catalyst manufactured by loading first noble metal on a support and loading second noble metal on a second support, preparing a coating containing both components on a carrier and impregnating the catalyst layer with a NOx adsorbing material such as alkaline (earth) metal or rare earth metal compounds. Preferably Pt on alumina/ceria and Rh on an oxide of Mn, Co, Ti or Fe are used. The NOx absorbing material is preferably Ba. Optionally the catalyst contains a second layer of Pt, Rh/zeolite after which both layers are impregnated with the NOx adsorbing compound.

Exhaust gas purifying system for engine

An exhaust gas purifying system includes an exhaust gas purifying catalyst (14) having a nitrogen oxide absorbing material which is installed in an exhaust line (13) of an engine (1) and performs split fuel injection to inject fuel directly into each combustion chamber (5) partly during a suction stroke and partly during a compression stroke to provide and supply an increased amount of carbon monoxide to the nitrogen oxide absorbing material so as thereby to desorb sulfur oxides from the nitrogen oxide absorbing material.

Exhaust gas purifying catalyst and exhaust gas purifying system

State estimation device, method and computer program therefor

A state of a user of a mobile terminal having a display for displaying an image maybe estimated. A sightline detector detects a sightline of the user of a mobile terminal and processing circuitry is configured to estimate a state of the user. The processing circuitry is configured to determine a top-down index value that is correlated with an attention source amount allocated to top-down attention of the user with respect to an image displayed on a display of the mobile terminal. The processing circuitry is configured to determine a bottom-up index value correlated with the attention source amount allocated to bottom-up attention of the user with respect to the image displayed on the display. The processing circuitry is configured to estimate the user state including an attention function degraded state based on the top-down index value and the bottom-up index value.

Exhaust gas disposable catalyst and method of manufacturing the same

In an exhaust gas disposable catalyst which is a γ-alumina catalyst prepared by sol-gel process, γ-alumina has more than 300 m 2 /g specific surface area and the catalyst element is supported on the γ-alumina and dispersed in pores thereof. The exhaust gas disposable catalyst is obtained by adding the catalyst element as a solution of salt before gelating in sol-gel process.

Catalytic Material And Catalyst For Purifying Exhaust Gas Component

Disclosed is a catalytic material for purifying an exhaust gas component. The catalytic material comprises a composite oxide which contains, as essential components, zirconium (Zr) and neodymium (Nd), and further contains a rare-earth metal R other than cerium (Ce) and neodymium (Nd), wherein each of the zirconium, neodymium and rare-earth metal R constituting the composite oxide is contained, in the form of oxide, in such a manner that a ratio of Nd 2 O 3 / (ZrO 2 + Nd 2 O 3 + RO) is 3 mol% or more, and a ratio of (Nd 2 O 3 + RO) / (ZrO 2 + Nd 2 O 3 + RO) is 33 mol% or less. The catalytic material of the present invention can oxidize/burn PM in a short period of time, while suppressing CO emission during the burning of the PM, and can achieve further enhanced NOx conversion performance.

Exhaust gas purification catalyst

Device for cleaning the exhaust gas of an internal combustion engine

Physical property evaluation method and device

A physical property evaluation method is the method for evaluating corrosion resistance of an electrodeposited coating film 5 as a film-shaped measurement target object by means of an electrochemical method, the method including the step of causing an electrolytic solution 8 to contact a front surface of the electrodeposited coating film 5. The speed of penetration of the electrolytic solution 8 into the electrodeposited coating film 5 is adjusted in such a manner that the levels of the front-side temperature and the back-side temperature of the electrodeposited coating film 5 and a difference between the front-side temperature and the back-side temperature of the electrodeposited coating film 5 are adjusted.

Material for exhaust gas purifying catalyst, exhaust gas purifying catalyst made of the material and method for producing the exhaust gas purifying catalyst

A catalytic base material for an exhaust gas purifying catalyst is produced by impregnating ceria powders with a barium contained solution and heating the ceria particles at approximately 400 to 1100° C. to create and accumulate barium oxides fixed to surfaces of the ceria particles.

Exhaust gas purifying device and method, exhaust gas purifying catalyst and production method for exhaust gas purifying catalyst

Exhaust gas purification catalyst and catalyst-equipped diesel particulate filter

To improve the performance of an exhaust gas purification catalyst and enhance the particulate matter burning rate of a catalyst-equipped diesel particulate filter, the catalyst contains a mixed oxide of Zr, at least one kind of rare earth metal other than Ce and precious metal. The rare earth metal is selected from the group of Y, Yb, Nd and Sc. The mixed oxide is obtained by mixing an acidic solution containing Zr ions, ions of at least one kind of rare earth metal other than Ce and precious metal ions with a basic solution to obtain a mixed oxide precursor through coprecipitation and calcining the precursor.

Exhaust emission control device for engine

(57)【要約】 【課題】 触媒体に含有された貴金属の触媒性能が劣化 することに起因した排気ガスの浄化性能の悪化を適正に 解消する。 【解決手段】 少なくともエンジンの高負荷あるいは高 回転時に、酸素濃度制御手段４０により、上記触媒体２ ５に流入する排気ガス中の酸素濃度を基準値以上に制御 するように構成されたエンジンの排気浄化装置におい て、上記触媒体２５の状態を判定する状態判定手段４２ を備え、この状態判定手段４２によって上記貴金属の触 媒性能が劣化した状態にあると判定され、かつ触媒体２ ５の温度が貴金属の性能改善に適した温度以上であると 判定された場合に、上記酸素濃度制御手段４０により、 上記触媒体２５に流入する排気ガス中の酸素濃度を所定 値以下に制御するように構成した。

Heat insulation structure of engine combustion chamber member and manufacturing method of the same

【課題】エンジン燃焼室部材の燃焼室壁面に形成される断熱層２１のクラック及び剥離の発生を防ぐとともに、燃焼圧による断熱層２１の変形を防ぎ、さらに、断熱層２１内への燃料の浸み込みを防ぐ。 【解決手段】断熱層２１が、シリコーン系樹脂（母材３１）と、磁性粉末３２と、上記シリコーン系樹脂の一部が酸化されてなるＳｉ系酸化物３３とを含む。 【選択図】図３

Catalyzed solid filter

Ein Filter ist zur wirksamen Verbrennung von Feststoffen, die sich auf einer Katalysatorschicht 7 ansammeln, sowohl in einem Schnellverbrennungsbereich als auch in einem langsamen Verbrennungsbereich konfiguriert. Die Katalysatorschicht 7 an der Abgaskanalwand eines Filters 1 umfasst ein Gemisch von einem Rh-dotierten, Ce-enthaltenden Verbundoxidteilchenmaterial, das mit Pt beladen ist, und einem Verbundteilchenmaterial, das mit Pt beladen ist. In den Mischteilchen dieses Gemisches sind Zr-enthaltende Verbundoxidteilchen, die kein Ce enthalten, und aktivierte Aluminiumoxidteilchen miteinander gemischt und agglomeriert.

Hydrocarbon adsorbent for exhaust gas purification, exhaust gas purification catalyst and exhaust gas purification apparatus

In order to adsorb effectively different types of hydrocarbons having differing sizes, a zeolite 6 having relatively large pores, a zeolite 8 having relatively small pores and a zeolite 7 having intermediate pores are arranged in very close proximity to each other by, for example, mixing.

Catalyst for purification of exhaust gas and its production

(57)【要約】 【課題】酸素過剰雰囲気で排気ガス中のＮＯｘを吸着す るＮＯｘ吸蔵材を備えた排気ガス浄化用触媒おいて、Ｍ ｎ酸化物やＣｏ酸化物をＮＯｘの浄化に有効に利用す る。 【解決手段】上記酸化物を触媒成分として用いるととも に、上記ＮＯｘ吸蔵材溶液と触媒貴金属溶液と同時に該 酸化物や母材に含浸させ、該酸化物上でＮＯｘ吸蔵材と 触媒貴金属とを互いに近接させて高分散に担持する。

Engine control device

An engine control device, which is adapted for an engine provided with an NOx-absorbing material arranged in an exhaust passage for absorbing NOx in an oxygen-rich atmosphere, and releasing NOx and absorbing sulfur content when the oxygen concentration drops, includes a discriminator for judging whether the amount of sulfur absorbed by the NOx-absorbing material has reached a prescribed quantity, and a reductant concentration controller which increases the temperature of the NOx-absorbing material by decreasing a quantity related to EGR ratio for desulfurizing the NOx-absorbing material based on the result of judgment made by the discriminator. When the quantity related to the EGR ratio is decreased, the temperature of exhaust gas increases. Consequently, the temperature of the NOx-absorbing material increases and the sulfur in the NOx-absorbing material is freed and released.

Abgasreinigungskatalysator

排気ガス浄化用触媒及びその製造方法

【課題】ＮＯｘ吸蔵材を含有する積層型の排気ガス浄化触媒において、そのＮＯｘ吸蔵材がゼオライトなど他の触媒成分に悪影響を及ぼさないようにする。【解決手段】排気ガス浄化用触媒において、担体１上に、ゼオライト、アルミナ、Ｃｅ含有酸化物及び触媒金属を含み且つＮＯｘ吸蔵材を含まない酸化触媒層２が形成され、酸化触媒層２の上に、ＮＯｘ吸蔵材、アルミナ、Ｃｅ含有酸化物及び触媒金属を含むＬＮＴ層３が形成されている。【選択図】図２

Corrosion resistance test method for coated metal material and use of water-containing material therein

Corrosion-resistance testing method for coated metal member, corrosion-resistance testing apparatus for coated metal member, corrosion-resistance testing program for coated metal member, and storage medium

A corrosion-resistance testing method for a coated metal member formed of a metallic substrate provided with a surface treatment coating includes an electrification step for applying a voltage and/or a current between a surface of the surface treatment coating and the metallic substrate in a state where a corrosion factor is in contact with the surface of the surface treatment coating so as to measure a temporal change in a current and/or a voltage occurring between the surface of the surface treatment coating and the metallic substrate, and an evaluation step for evaluating a defect occurrence status of the surface treatment coating based on a waveform of the temporal change.

触媒付パティキュレートフィルタ及びその製造方法

【課題】触媒金属のＳ被毒を抑制することで、パティキュレートフィルタに堆積したＰＭの燃焼が効率良く進むようにする。 【解決手段】パティキュレートフィルタの排ガス通路壁２１に設けられた触媒層２２は、ジルコニウム（Ｚｒ）とセリウム（Ｃｅ）とを含むＺｒＣｅ系複合酸化物２３に触媒金属としてパラジウム（Ｐｄ）と白金（Ｐｔ）との合金２４が担持されたＰｄＰｔ合金担持ＺｒＣｅ系複合酸化物を含む。 【選択図】図１１

Engine control device

自着火エンジン用燃料

【課題】アルカン成分の組成及び含有量を制御することにより燃費やエミッション性能を向上し得る自着火エンジン用燃料を提供する。 【解決手段】アルカンを含有する自着火エンジン用燃料において、アルカンの構造によってその含有量を調整するようにした。具体的には、高自着火性成分と低自着火性成分とを含有する自着火エンジン用燃料であって、上記高自着火性成分は、主鎖を構成する炭素のうち、２級炭素の数は３以上であり、上記低自着火性成分は、主鎖を構成する炭素のうち、２級炭素の数は２以下であり且つ３級炭素及び４級炭素に隣接する少なくとも１つの炭素の級数は３以上であり、上記高自着火性成分の含有量は、１６体積％以上であり、上記低自着火性成分の含有量は、８４体積％以下となるようにした。 【選択図】図１

自着火エンジン用燃料

【課題】アルカン成分の組成及び含有量を制御することにより燃費やエミッション性能を向上し得る自着火エンジン用燃料を提供する。 【解決手段】自着火エンジン用燃料において、着火遅れ時間の長い分岐アルカン成分の含有量を所定値以下にするようにした。具体的には、複数のアルキル基を有する分岐アルカンを含有する自着火エンジン用燃料であって、上記分岐アルカンの主鎖を構成する炭素のうち、３級炭素及び４級炭素に隣接する少なくとも１つの炭素の級数は３以上であり、上記分岐アルカンの含有量は、８３体積％以下となるようにした。 【選択図】図１

Catalyst for purifying exhaust gas and method for purifying exhaust gas with the catalyst

エンジンの制御装置

(57)【要約】 【課題】 省スペース化が図れ、かつコスト上昇を回避 できるエンジンの制御装置を提供することを目的とす る。 【解決手段】 排気通路３４に配置され、酸素過剰雰囲 気でＮＯｘを吸収し、酸素濃度低下によりＮＯｘを放出 すると共に、硫黄成分を吸収するＮＯｘ吸収材３６と、 ＮＯｘ吸収材３６が吸収した硫黄吸収状態が所定値以下 であることを判断する判断手段と、判断手段の判断結果 に基づき、ＥＧＲ率の関連値を減少させてＮＯｘ吸収材 の温度を昇温させ、ＮＯｘ吸収材中の硫黄を離脱させる 還元材濃度制御手段４６とを具備し、ＥＧＲ率の関連値 を減少させると、それに伴って排気ガスの温度が上昇し てＮＯｘ吸収材の温度が昇温し、ＮＯｘ吸収材中の硫黄 が離脱されて放出される。

Exhaust gas purification catalyst

状態推定装置

【課題】携帯端末の利用者の状態を推定する。【解決手段】視線検出部（41）は、画像を表示する表示部（11）を有する携帯端末（10）の利用者の視線を検出する。推定処理部（42）は、第１推定処理において、携帯端末（10）の表示部（11）に表示される画像に対する利用者の視線の動きに基づいて、注意機能低下状態を含む利用者の状態を推定する。【選択図】図８

排気ガス浄化用触媒及びその製造方法並びにそれを用いた排気ガス浄化方法

【課題】ＨＣ及びＣＯ酸化能を有する触媒層と、ＮＯ ｘ 還元能を有する触媒層とを備えた排気ガス浄化触媒において、高効率でＨＣ、ＣＯ及びＮＯ ｘ を浄化できるようにする。 【解決手段】排気ガス浄化触媒は、担体１上に形成され、ゼオライト及び少なくとも１種の触媒金属を含む酸化触媒層２と、酸化触媒層２の上に形成され、ＮＯ ｘ 吸蔵材及び少なくとも１種の触媒金属を含むＬＮＴ層３と、ＬＮＴ層３の上に形成され、アルミナ及びジルコニアのうちの少なくとも１つ並びに触媒金属としてのＲｈを含むＮＯ ｘ 還元層４とを備え、ＮＯ ｘ 還元層４は、酸化触媒層２及びＬＮＴ層３よりもＲｈの含有量が大きい。 【選択図】図２

排気ガス浄化用触媒及びその製造方法

【課題】ＮＯ ｘ 吸蔵材を含有する積層型の排気ガス浄化触媒において、そのＮＯ ｘ 吸蔵材がゼオライトなど他の触媒成分に悪影響を及ぼさないようにすると共に、担体上の触媒層の剥離を防ぎ、排気ガスの拡散を良好にして触媒の性能を十分に発揮できるようにする。 【解決手段】排気ガス浄化用触媒において、担体１上における排ガス流れ方向上流側に、ゼオライト、アルミナ、Ｃｅ含有酸化物及び触媒金属を含む酸化触媒層２が形成され、担体１上における排ガス流れ方向下流側に、ＮＯ ｘ 吸蔵材、アルミナ、Ｃｅ含有酸化物及び触媒金属を含むＬＮＴ層３が形成され、酸化触媒層２のゼオライトの平均粒径は、ＬＮＴ層３のアルミナ及びＣｅ含有酸化物の混合物の平均粒径よりも小さい。 【選択図】図２

Corrosion resistance test method for coated metal material

排気ガス浄化用触媒

【課題】触媒の耐熱性を高める。 【解決手段】ハニカム状担体に、Ａｌ系酸化物と、Ｃｅ系酸化物と、触媒金属とを含有する触媒層が形成されている排気ガス浄化用触媒において、上記Ａｌ系酸化物及びＣｅ系酸化物各々は、中空殻８の形態と、該中空殻を壊してなる破砕殻９の形態となって上記触媒層に存在する。 【選択図】 図３

被覆金属材の耐食性試験方法及び該方法に用いられる含水材料

【課題】より短時間で信頼性の高い評価結果が得られる被覆金属材の耐食性試験方法及び該方法に用いられる含水材料を提供する。【解決手段】鋼板２に電着塗膜４が設けられてなる被覆金属材１の耐食性試験方法であって、電着塗膜４に接触する含水材料６を保持する２つの含水材料保持部１１と、２つの含水材料保持部１１の各々に収容された含水材料６に接触する２つの電極１２と、を配置するとともに、２つの電極１２間を外部回路７により電気的に接続するステップと、外部回路７上に設けられた通電手段８により、２つの電極１２の一方及び他方を、それぞれアノード及びカソードとして両者間に通電することにより、被覆金属材１の腐食を進行させるステップと、を備え、含水材料６の６５℃における粘度は、１０ｍＰａ・ｓ以上４０ｍＰａ・ｓ以下である。【選択図】図３

Exhaust gas purification catalyst

A catalyst layer includes: a first mixed oxide particle component 4 which contains Ce and Rh 8 and in which Rh is partially exposed at particle surfaces; and a second mixed oxide particle component 5 containing Ce, Zr, and a rare earth metal except Ce. The particle size distribution of the first mixed oxide particle component 4 has a peak in the particle size range from 100 nm to 300 nm, both inclusive. The particle size distribution of the second mixed oxide particle component 5 has a peak in a particle size range larger than the particle size range in which the first mixed oxide particle component 4 has the peak. At least part of particles of the first mixed oxide particle component 4 is attached to at least part of particles of the second mixed oxide particle component 5.

排ガス浄化用触媒

【課題】排ガス浄化用触媒１にＮＯｘ吸蔵材としてアルカリ金属を用いたときにコージェライト製の基材２にクラックを生じ易くなるという問題を解決する。 【解決手段】基材２にチタニア含有層３を形成し、このチタニア含有層３の上にアルカリ金属を含む触媒担持層４を形成することにより、触媒担持層４のアルカリ金属が基材２に接触して該基材２と反応することをチタニア含有層３によって防止する。 【選択図】　　図１

排ガス浄化用触媒

【課題】排ガス浄化用触媒１にＮＯｘ吸蔵材としてアルカリ金属を用いたときにコージェライト製の基材２にクラックを生じ易くなるという問題を解決する。 【解決手段】ハニカム状基材２のセル内面にシリカ含有層３を形成し、該シリカ含有層３の上にアルカリ金属を含有する触媒層４を形成する。基材２の周辺側のシリカ含有層３を基材２の中心側のシリカ含有層３よりも厚くする。或いは、基材２の周辺部のセルに目詰めを施し、該周辺部のセル内面には上記触媒層を形成しないようにする。 【選択図】 図２

State estimation device

A sightline detection section detects a sightline of a user of a mobile terminal that has a display section for displaying an image. An estimation processing section executes first estimation processing to estimate a user state including an attention function degraded state on the basis of motion of the user's sightline with respect to the image displayed on the display section of the mobile terminal.

ＮＯｘ検出装置及びＮＯｘ検出方法

【課題】ＮＯｘを正確に検出することができるＮＯｘ検出装置およびＮＯｘ検出方法を提供すること。 【解決手段】排気通路に配置され排気ガス中のＮＯｘを検出するＮＯｘ検出装置２６であって、ＮＯｘ検出素子２６ｃと、該ＮＯｘ検出素子を覆うカバー２６ａ、２６ｂとを備え、該カバーがＮＯｘに対して還元作用を生じさせない物質で形成されていることを特徴とする。 【選択図】　　　図２

パティキュレート燃焼触媒材の評価方法及び同評価装置

【課題】酸素吸蔵材との関係での触媒金属のパティキュレート燃焼に対する適性を効率良く判定できるようにする。 【解決手段】供試材として、触媒金属を含む酸素吸蔵材（パティキュレート燃焼触媒材）と該触媒金属を含まない酸素吸蔵材とを準備し（Ｓ１，Ｓ２）、各供試材に 18 Ｏ 2 を吸蔵させ（Ｓ３，Ｓ６）、次いで各供試材にカーボン質粉末を混合し（Ｓ４，Ｓ７）、 16 Ｏ 2 含有気流中で当該混合物を昇温させていくことにより、 18 Ｏを含むＣＯ 2 及び 18 Ｏを含まないＣＯ 2 を生成させてそれら各種ＣＯ 2 量の温度変化を測定し（Ｓ５，Ｓ８）、当該両供試材の各種ＣＯ 2 量の温度変化を比較することにより、当該触媒材のパティキュレート燃焼に対する適性を判定する。 【選択図】図３

Exhaust gas catalytic conversion system

An upstream catalyst (3) and a downstream catalyst (4) are disposed in an exhaust passage (2) of an engine (1). The downstream catalyst (4) contains in the same catalyst layer thereof Rh-doped CeZrNd mixed oxide particles on which Rh is supported and active alumina particles on which Pt is supported. The upstream catalyst (3) is a three-way catalyst containing an oxygen storage component having a lower oxygen storage capacity than the Rh-doped CeZrNd mixed oxide.

State estimation device

Microorganism and method for producing triacylglycerol

A microorganism having at least one SPX gene encoding SPX protein responsive to phosphorus deficiency, and characterized in that a function of the SPX protein is decreased or lost by introducing gene mutation into the SPX gene.

Microorganism and method for producing triacylglycerol

A microorganism having at least one SPX gene encoding SPX protein responsive to phosphorus deficiency, and characterized in that a function of the SPX protein is decreased or lost by introducing gene mutation into the SPX gene.

Microorganism and method for producing triacylglycerol

触媒付パティキュレートフィルタ

【課題】パティキュレートフィルタに堆積したＰＭの燃焼が効率良く進むようにする。 【解決手段】フィルタの排ガス通路壁の触媒層は、ＺｒＮｄ複合酸化物粒子材ＺＮとＺｒＮｄＰｒ複合酸化物粒子材ＺＮＰと触媒金属とを含有する。ＺＮの平均粒子径は１９０ｎｍ以上５５０ｎｍ以下であり、ＺＮの平均粒子径に対するＺＮＰの平均粒子径の比率が５／１００以上５０／１００以下であり、ＺＮ量に対するＺＮＰ量の質量比が５／９５以上３０／７０以下である。 【選択図】図６

Measurement apparatus for corrosion inspection

A measurement apparatus 1 for corrosion inspection is an apparatus that takes a measurement for corrosion inspection of an inspected object 2 having a metal base material 21 and surface-treated films 22, 23 on the base material, includes: a contact section 3 that holds an aqueous electrolyte material and contacts a surface of the surface-treated film; and a measurement section 4 that has an electrode 41 electrically connected to the surface-treated film via the contact section, and measures an energized state between the electrode and the base material while applying a voltage between the electrode and the base material, and further includes: a camera 61 that captures an image of the contact section at least during the measurement; and output sections 51, 52 that correlates and outputs a measured value by the measurement section with a captured image by the camera.

腐食検査用測定装置

【課題】被検査物の腐食検査のための測定の信頼性を確保できる。【解決手段】腐食検査用測定装置１は、金属製の基材２１と該基材上の表面処理膜２２、２３とを有する被検査物２の腐食の検査のための測定を行う装置であって、含水電解質材料を保持しかつ、表面処理膜の表面に接触する接触部３と、表面処理膜に接触部を介して電気的に接続される電極４１を有しかつ、電極と基材との間に電圧を印加させながら、電極と基材との間の通電状態を測定する測定部４と、を備え、接触部の少なくとも一部は、含水電解質材料を保持するための保水性を有するシートであって、接触部は、測定時に広げられて表面処理膜の表面に接触する展開状態と、非測定時に小さくされた収納状態と、に切り替わる。【選択図】図１

排気ガス浄化触媒

【課題】浄化性能をさらに改善する。 【解決手段】エンジンの排気通路に配設されたハニカム状担体のセル壁に、ＣｅとＺｒとを含有するとともに結晶格子点または格子点間に触媒貴金属が配置された複酸化物を含む触媒層が形成される。複酸化物には、ＣｅＯ ２ がＣｅＯ ２ およびＺｒＯ ２ の総質量に対して６５質量％以上含まれる第１複酸化物と、ＺｒＯ ２ がＣｅＯ ２ およびＺｒＯ ２ の総質量に対して６５質量％以上含まれる第２複酸化物とを含む。 【選択図】図７

リサイクル支援プログラム及びリサイクル方法

【課題】例えば触媒装置１のように、貴金属等を含有する本体部材とそれを保持する鉄系金属からなる保持部材（付加部材）とを有する製品をリサイクルする場合に、適切なリサイクル手法を間違いなく選択できるようにする。 【解決手段】触媒装置１には予め触媒担体２（本体部材）に担持されている触媒金属（貴金属及びその他の金属材料）並びにケース部材３（保持部材、付加部材）の質量に関する質量情報を記録したバーコード４を設ける。リサイクル支援プログラムには、使用済み触媒装置１のバーコード４から質量情報を読み取るステップ（Ｓ２）と、その情報に基づいて触媒金属のケース部材３に対する質量比率を求めるステップ（Ｓ４）と、質量比率が判定基準値以上のときに触媒担体２とケース部材３とを分解して処理する第１のリサイクル手法を指示するステップ（Ｓ５→Ｓ６）とを備える。さらに、貴金属の市場価格の情報等に基づいて別のリサイクル手法を指示するようにしてもよい。 【選択図】 図３