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公开(公告)号：US20180023436A1
公开(公告)日：2018-01-25
申请号：US15547988
申请日：2016-01-29
发明人： Ryosaku Takahara , Koichi Inaba , Nobuhiro Komatsu , Masafumi Sakota , Takahiro Kogawa , Michitaka Yamaguchi
IPC分类号： F01N3/08 , B01D53/96 , B01J23/50 , B01J21/04 , B01J23/96 , F01N3/035 , B01J35/04 , B01J37/02 , B01J37/08 , B01J38/02 , F01N3/023 , B01D53/94 , B01J35/00
CPC分类号： F01N3/0885 , B01D53/94 , B01D53/9422 , B01D53/96 , B01D2255/1023 , B01D2255/104 , B01D2255/915 , B01J21/04 , B01J23/44 , B01J23/50 , B01J23/96 , B01J35/0006 , B01J35/04 , B01J37/0213 , B01J37/0236 , B01J37/0248 , B01J37/08 , B01J38/02 , F01N3/023 , F01N3/035 , F01N3/08 , F01N3/0814 , F01N3/0842 , F01N3/10 , F01N3/24 , F01N2370/02 , F01N2510/065 , F02D41/04 , Y02T10/47
摘要： An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al2O3 carrier; the quantity of Ag supported by the Al2O3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al2O3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.
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公开(公告)号：US09970342B2
公开(公告)日：2018-05-15
申请号：US15547988
申请日：2016-01-29
发明人： Ryosaku Takahara , Koichi Inaba , Nobuhiro Komatsu , Masafumi Sakota , Takahiro Kogawa , Michitaka Yamaguchi
IPC分类号： F01N3/10 , F01N3/08 , B01D53/96 , B01J23/50 , B01J21/04 , B01J23/96 , B01J35/00 , B01J35/04 , B01J37/02 , B01J37/08 , B01J38/02 , F01N3/023 , F01N3/035 , B01D53/94
CPC分类号： F01N3/0885 , B01D53/94 , B01D53/9422 , B01D53/96 , B01D2255/1023 , B01D2255/104 , B01D2255/915 , B01J21/04 , B01J23/44 , B01J23/50 , B01J23/96 , B01J35/0006 , B01J35/04 , B01J37/0213 , B01J37/0236 , B01J37/0248 , B01J37/08 , B01J38/02 , F01N3/023 , F01N3/035 , F01N3/08 , F01N3/0814 , F01N3/0842 , F01N3/10 , F01N3/24 , F01N2370/02 , F01N2510/065 , F02D41/04 , Y02T10/47
摘要： An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al2O3 carrier; the quantity of Ag supported by the Al2O3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al2O3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.
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公开(公告)号：US09708946B2
公开(公告)日：2017-07-18
申请号：US14891747
申请日：2014-05-22
发明人： Ataru Daido , Takahiro Kogawa
IPC分类号： F01N3/035 , B01D53/94 , B01J23/50 , B01J35/04 , F01N3/022 , B01J37/02 , B01D46/24 , B01J23/42 , B01J23/44 , B01J23/46
CPC分类号： F01N3/035 , B01D46/2418 , B01D53/94 , B01D53/944 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/104 , B01D2255/9155 , B01D2258/012 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/50 , B01J35/04 , B01J37/0248 , F01N3/0222
摘要： Provided is a novel DPF which can prevent PM from accumulating on the surface and interior of a filter substrate, and can suppress an increase in back pressure caused by exhaust gas. The DPF has a configuration in which an inorganic porous layer, which includes a metal oxide or a metal composite oxide and provided with surface irregularities having a thickness of at least 50% of the thickness of the inorganic porous layer, is formed on part or all of the surface of the dividing wall on the side where exhaust gas flows in.
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公开(公告)号：US12083509B2
公开(公告)日：2024-09-10
申请号：US17606912
申请日：2020-06-29
CPC分类号： B01J29/7057 , B01J35/50 , B01J35/58 , C01B39/46 , C07C4/06 , B01J2229/18 , C01P2002/72 , C07C2529/70
摘要： Provided is a beta zeolite satisfying P>76.79Q−29.514 in a range in which Q is less than 0.4011 nm, wherein, P represents an AB value that is an intensity ratio of A to B, A represents a diffraction intensity of a main peak of the beta zeolite observed by X-ray diffraction measurement, B represents a diffraction intensity of the (116) plane of α-alumina obtained by X-ray diffraction measurement under the same conditions as those for the X-ray diffraction measurement on the beta zeolite, the α-alumina being the standard substance 674a distributed by the American National Institute of Standards and Technology, and Q represents a lattice interplanar spacing of the main peak of the beta zeolite observed by X-ray diffraction measurement. It is preferable that the formula (1) above is satisfied in a range in which Q is from 0.3940 to 0.4000 nm.
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公开(公告)号：US11065606B2
公开(公告)日：2021-07-20
申请号：US16758193
申请日：2018-10-25
申请人： Mitsui Mining & Smelting Co., Ltd. , NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY , NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
发明人： Yoshihiro Kubota , Satoshi Inagaki , Naonobu Katada , Satoshi Suganuma , Yasuo Yamazaki , Takahiro Kogawa
摘要： The purpose of the present invention is to provide a metal-substituted beta zeolite that exhibits a more excellent catalytic performance than conventional one, and a method for producing the same. The present invention provides a metal-substituted beta zeolite by subjecting an alkali metal-form beta zeolite produced without using an organic structure-directing agent to ion exchange with ammonium ion and then, using a filter cake procedure, to ion exchange with copper ion or iron(II) ion. The present invention also provides a metal-substituted beta zeolite which has been ion exchanged with copper ion or iron(II) ion and in which the amount of Lewis acid sites is greater than the amount of Bronsted acid sites when the amount of Bronsted acid sites and the amount of Lewis acid sites are measured by ammonia infrared-mass spectroscopy temperature-programmed desorption on the as-produced state.
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