Abstract: An exhaust gas purification catalyst for removing CO or HC, which contains a carrier and an alloy of palladium and silver supported on this carrier.

Abstract: A device for controlling an internal combustion engine comprises a device for trapping particulate matter (PM) in exhaust gas in an exhaust passage, means for supplying ozone to the particulate matter trapping device from the upstream thereof to oxidize and remove PM deposited in the device, and means for interrupting the fuel injection of the internal combustion engine upon the execution of ozone supply by the ozone supply means. It is possible to prevent components consuming ozone, such as NOx, from being contained in the exhaust gas of the internal combustion engine, whereby ozone is effectively usable.

Abstract: There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter (30) for collecting particulate matter in an exhaust gas inside an exhaust passage, wherein the catalyst (38) is supported only in a part of a partition wall (37) of the particulate filter defining a passage (36) on the downstream side of the partition wall (37). In consequence, when ozone is supplied, since the ozone is introduced on the upstream side of the partition wall (37) in which the PM is collected, the ozone does not contact the catalyst supported only in the part of the partition wall defining the passage (36) on the downstream side of the partition wall. Therefore, it is prevented that the ozone is decomposed, and a PM oxidation function is achieved.

Abstract: The invention makes use of an exhaust gas catalyst, comprising an active component comprising at least one type of metal from noble metals and transition metals; NOx-absorbing material for absorbing and releasing nitrogen oxides according to the surrounding nitrogen oxide concentration; and compounds represented by A2O2SO4 and/or A2O2S (A is a rare earth element).

Abstract: An exhaust gas purification system provided with a trapping device (6) arranged on an engine exhaust passage and trapping particulate matter in the exhaust gas, an ozone generator (21) for generating ozone, and an ozone adsorbent (22) able to adsorb ozone, wherein at least part of the ozone generated by said ozone generator is adsorbed by said ozone adsorbent and, when particulate matter trapped on said trapping device should be removed, ozone adsorbed on the ozone adsorbent is desorbed from the ozone adsorbent and supplied to the trapping device. Due to this, it is possible to use an ozone generator with a relatively low ozone generating ability to burn off PM trapped on a filter etc. efficiently.

Abstract: The invention makes use of an exhaust gas catalyst, comprising an active component comprising at least one type of metal from noble metals and transition metals; NOx-absorbing material for absorbing and releasing nitrogen oxides according to the surrounding nitrogen oxide concentration; and compounds represented by A2O2SO4 and/or A2O2S (A is a rare earth element).

Abstract: A process for cracking hydrocarbons at atmospheric pressure includes the following steps: providing a catalyst, passing a gaseous hydrocarbon over the catalyst and exposing the catalyst to microwave energy. The hydrocarbons are broken down into lower Carbon number molecules.

Abstract: A multiple-metal complex-containing compound in accordance with an embodiment has a plurality of metal complexes in each of which a ligand is coordinated to one metal atom or a plurality of metal atoms of the same kind. The plurality of metal complexes are bound to each other via a polydentate ligand that substitutes partially the ligands of the two or more metal complexes, and have 2 to 1000 metal atoms.

Abstract: An exhaust purifying system for an internal combustion engine is provided with a plurality of DPFs (30a and 30b) branched and connected to an exhaust passage (15) for collecting particulate matter in an exhaust gas and an ozone supplier for supplying ozone to the upstream side of each of the plurality of DPFs (30a and 30b). The system respectively changes a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between the plurality of DPFs (30a and 30b).

Abstract: An apparatus and a method for PM purification, where good PM purification performance can be achieved. The PM purification apparatus includes (a) a honeycomb support having an outer periphery-side region and an inner-side region, which carries a PM oxidation catalyst and in which the PM oxidation catalyst loading per unit volume of support in the outer periphery-side region is greater than the PM oxidation catalyst loading per unit volume of support in the inner-side region, (b) a center electrode passing through the center part of the honeycomb support and extending to the exhaust gas flow upstream side, and (c) an outer peripheral electrode disposed on the outer periphery of the honeycomb support and electrically insulated from the center electrode by the honeycomb support. The PM purification method can be performed using the PM purification apparatus.

Abstract: A multiple-metal complex-containing compound in accordance with an embodiment has a plurality of metal complexes in each of which a ligand is coordinated to one metal atom or a plurality of metal atoms of the same kind. The plurality of metal complexes are bound to each other via a polydentate ligand that substitutes partially the ligands of the two or more metal complexes, and have 2 to 1000 metal atoms.

Abstract: An exhaust emission control apparatus that is used with an internal combustion engine to use both a NOx retention member and a catalyst while avoiding a decrease in the exhaust gas purification capacity. A NOx occlusion reduction type catalyst is placed in an exhaust path of an internal combustion engine. The NOx occlusion reduction type catalyst includes a base material. The base material includes an exhaust inflow cell, which is closed at its downstream side; and an exhaust outflow cell, which is closed at its upstream side and is adjacent to the first cell with the partition wall positioned in between. The exhaust inflow cell is configured so that a NOx retention layer is formed on the inner surface thereof, and the exhaust outflow cell is configured so that a catalyst layer is formed on the inner surface thereof, respectively.

Abstract: A device for purification of exhaust gas including: an exhaust gas passage 15 connected to an internal combustion engine 10; a particulate matter trapping device 30 which is disposed in the exhaust gas passage 15, and which traps particulate matters in exhaust gas; ozone supply means 40 which is connected to the exhaust gas passage 15 and on an upstream side of the particulate matter trapping device 30, and which can supply ozone to the particulate matter trapping device 30; and an NO oxidizing catalyst 20 which is disposed in the exhaust gas passage 15 and on an upstream of the ozone supply means 40, and which oxidizes NO in the exhaust gas.

Abstract: A process for removing sulfur and sulfur compounds from a catalyst includes the following steps: exposing the catalyst to a reducing atmosphere and exposing the catalyst to microwave energy. Desorption of the sulfur and sulfur compounds from the catalyst occurs at a temperature less than 600 degrees centigrade.

Abstract: The device for cleaning exhaust gas of the internal combustion engine includes means provided in an exhaust gas passage (15) of the internal combustion engine (10), such as a NOx catalyst (20), a SOx trap catalyst (30) provided at a position upstream from the exhaust gas cleaning means, and means (40, 41) for feeding ozone to a position upstream from the SOx trap catalyst. SOx in the exhaust gas is absorbed by the SOx trap catalyst before reaching the NOx catalyst. Particularly, it is possible to oxidize SOx in the exhaust gas by ozone as oxidizing gas to be an easily decomposable state, whereby SOx is absorbable even at a low temperature. Preferably, the SOx trap catalyst has no active points consisting of precious metal. In such a case, the SOx trap catalyst is prevented from being sulfur-poisoned whereby the deterioration of the SOx absorbing ability is avoidable.

Abstract: The present invention provides a metal cluster-carrying metal oxide support wherein a metal cluster obtained by use of a dendrimer is prevented from migrating to the surface of support and being sintered, and a process for production thereof. The process for producing the metal cluster-carrying metal oxide support of the present invention comprises (a) coordinating a first metal ion to a dendrimer 10, (b) reducing the first metal ion coordinated to the dendrimer to precipitate a cluster 6a of the first metal in the dendrimer, (c) further coordinating a second metal ion 8 to the dendrimer, and (d) drying and firing the solution containing this dendrimer on a metal oxide support 9, wherein the oxide of the second metal is the same as the metal oxide constituting the metal oxide support, or a metal oxide capable of forming a composite oxide with the metal oxide constituting the metal oxide support.

Abstract: A fuel injection apparatus (31) comprises an EHD atomizer (32). The EHD atomizer (32) comprises a cylindrical body (33) and a narrow pipe (34) attached to a tip of the cylindrical body (33). The cylindrical body (33) is connected through a fuel introducing pipe (35) to a fuel tank (36), and an electronically-controlled fuel pump (37) is arranged in the fuel introducing pipe (35). A voltage application device (38) is electrically connected to the narrow pipe (34). When the fuel is to be injected, the fuel pump (37) is operated to supply the fuel in the fuel tank (36) through the fuel introducing pipe (35) into the cylindrical body (33) of the EHD atomizer (32). The fuel is then flown through the narrow pipe (34) and is injected from the tip of the narrow pipe (34). At this time, the voltage application device (38) applies a pulse voltage or applies a pulse voltage and a direct-current voltage superimposingly to the narrow pipe (34).

Abstract: An amidine-carboxylic acid complex in accordance with an aspect of the invention has an amidine ligand and a carboxylic acid ligand that are coordinated to one metal atom or a plurality of metal atoms of the same element. A multiple-complex-containing compound, i.e. a bridged polynuclear complex, in accordance with the aspect of the invention is formally derived from two or more such amidine-carboxylic acid complexes, linked by a polyvalent carboxylic acid ligand. The bridged polynuclear complex may be used in a production method to support metal (oxide) clusters on a porous support by impregnating these with a solution thereof, followed by drying and firing.

Abstract: A multiple-metal complex-containing compound in accordance with an embodiment has a plurality of metal complexes in each of which a ligand is coordinated to one metal atom or a plurality of metal atoms of the same kind. The plurality of metal complexes are bound to each other via a polydentate ligand that substitutes partially the ligands of the two or more metal complexes, and have 2 to 1000 metal atoms.

Abstract: This invention is intended to ensure that an exhaust gas purification device with an NOx storage reduction catalyst and a particulate filter is able to fully utilize an original NOx storage capability of the NOx storage reduction catalyst. For this end, in addition to the filter 40 disposed upstream relative to the NOx storage reduction catalyst 22, the purification device includes a fuel supply element 42 for supplying a fuel so that the fuel is mixed with exhaust gas that flows into the filter, and an ozone feeder 30 for supplying ozone so that the ozone is mixed with exhaust gas that flows into the NOx storage reduction catalyst at a downstream position relative to the filter 40.