Abstract: The present invention relates to a catalyst comprising a carrier substrate of the length L extending between substrate ends a and b and three washcoat zones A, B and C wherein washcoat zone A comprises one or more first platinum group metals and extends starting from substrate end a over a part of the length L, washcoat zone C comprises one or more first platinum group metals and extends starting from substrate end b over a part of the length L, and washcoat zone B comprises the same components as washcoat zone A and in addition, one or more second platinum group metals and extends between washcoat zones A and C, wherein L=LA+LB+LC, wherein LA is the length of washcoat zone A, LB is the length of substrate length B and LC is the length of substrate length C.

Abstract: The present invention relates to a catalyst comprising a carrier substrate of the length L extending between substrate ends a and b and three washcoat zones A, B and C wherein washcoat zone A comprises one or more first platinum group metals and extends starting from substrate end a over a part of the length L, washcoat zone C comprises one or more first platinum group metals and extends starting from substrate end b over a part of the length L, and washcoat zone B comprises the same components as washcoat zone A and in addition, one or more second platinum group metals and extends between washcoat zones A and C, wherein L=LA+LB+LC, wherein LA is the length of washcoat zone A, LB is the length of substrate length B and LC is the length of substrate length C.

Abstract: Disclosed is a method of processing a composition comprising soot. The method includes supplying a first composition comprising soot particles to a first chamber. The first chamber is separated from a second chamber with a filter wall located therebetween. The soot particles are collected with the filter wall in the first chamber while substantially passing gaseous components of the first composition to the second chamber. A photocatalyst configured to facilitate generating at least one oxidant is activated, and the at least one oxidant oxidizes at least part of the soot filtered in the first chamber. Further disclosed is a soot processing apparatus, which includes a first electrode, a second electrode opposing to the first electrode, a first cell, a second cell and at least one porous wall. The first and second electrodes create a plasma state between them. The first cell and second cell are located between the first and second electrodes, and each has an opening.

Abstract: Disclosed is a method of processing a composition comprising soot. The method includes supplying a first composition comprising soot particles to a first chamber. The first chamber is separated from a second chamber with a filter wall located therebetween. The soot particles are collected with the filter wall in the first chamber while substantially passing gaseous components of the first composition to the second chamber. A photocatalyst configured to facilitate generating at least one oxidant is activated, and the at least one oxidant oxidizes at least part of the soot filtered in the first chamber. Further disclosed is a soot processing apparatus, which includes a first electrode, a second electrode opposing to the first electrode, a first cell, a second cell and at least one porous wall. The first and second electrodes create a plasma state between them. The first cell and second cell are located between the first and second electrodes, and each has an opening.

Abstract: The invention relates to a system and a method for processing exhaust gas of an internal combustion engine such as a diesel engine. The disclosed system and method can be particularly suitable to the diesel engine that usually operates in a lean burn condition without the occurrence of a periodic high-load condition in view of its combustion characteristics. According to the system and method, an exhaust composition containing soot particles and gaseous components are processed to remove the soot particles and to reduce the amount of NOx compounds. The soot particles are first filtered with a filter that passes gaseous components of the composition and collecting the soot particles. The collected soot particles are oxidized in the presence of a light-activated redox catalyst to turn to smaller molecules that can pass through the filter. The NOx compounds are temporarily adsorbed by an adsorber and reduced in the presence of a light-activated redox catalyst to turn to N2.

Abstract: A purification system of exhaust gases in an internal combustion engine purifies the exhaust gases by disposing a reaction furnace in an exhaust pipe of the internal combustion engine. The system includes a reactor including a honeycomb carrier having a plurality of carrier cells in the reaction furnace and plasma generating electrodes. On each of the plurality of carrier cells, a photocatalyst layer is coated. Further, the plasma generating electrodes, having a plurality of electrode cells, are mounted at an inner end and an outer end of the honeycomb carrier.

Abstract: The invention relates to a system and a method for processing exhaust gas of an internal combustion engine such as a diesel engine. The disclosed system and method can be particularly suitable to the diesel engine that usually operates in a lean burn condition without the occurrence of a periodic high-load condition in view of its combustion characteristics. According to the system and method, an exhaust composition containing soot particles and gaseous components are processed to remove the soot particles and to reduce the amount of NOx compounds. The soot particles are first filtered with a filter that passes gaseous components of the composition and collecting the soot particles. The collected soot particles are oxidized in the presence of a light-activated redox catalyst to turn to smaller molecules that can pass through the filter. The NOx compounds are temporarily adsorbed by an adsorber and reduced in the presence of a light-activated redox catalyst to turn to N2.

Abstract: A purification system of exhaust gases in an internal combustion engine is disposed to a reaction furnace capable of reducing noxious components of the exhaust gases in an exhaust pipe of the internal combustion engine in order to purify the exhaust gases. The purification system comprises a reactor including a honeycomb carrier having a plurality of carrier cells, each of which a photocatalyst layer is coated, in the reaction furnace, and a plasma generating means having a plurality of electrode cells and mounted on an inner end and an outer end of the honeycomb carrier. The honeycomb carrier includes a photocatalyst layer coated on a wall surface of each of the carrier cells, the photocatalyst layer being activated by a plasma optical source. Further, a volume and a number of each of the electrode cells are varied depending upon the variation of that of each of the carrier cells, the carrier cells having 100-900 numbers per the unit area(1 inch×1 inch).