公开(公告)号：US20140329669A1

公开(公告)日：2014-11-06

申请号：US14369980

申请日：2012-12-05

申请人： N.E. CHEMCAT CORPORATION

发明人： Takehiro Fujimura ,  Yoshinori Takahashi ,  Ken Nagashima ,  Akito Takayama ,  Yasuharu Kanno

IPC分类号： B01J27/053 ,  B01D53/94

CPC分类号： B01J27/053 ,  B01D53/9413 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2092 ,  B01D2255/911 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J23/464 ,  B01J23/58 ,  B01J27/055 ,  B01J35/0006 ,  B01J35/0093 ,  B01J35/023 ,  B01J35/1014 ,  B01J35/1019 ,  F01N2510/06 ,  Y02A50/2324 ,  Y02T10/22

摘要： Disclosed are alumina materials including a barium sulfate, catalyst or adsorbent using the same, in particular, catalyst for exhaust gas purification superior in NOx purification performance, suitable as a catalyst for purifying harmful substances included in exhaust gas discharged from an internal combustion engine of a gasoline vehicle, a diesel vehicle. An alumina material containing a barium sulfate in an amount of 5 to 70% by mass to alumina, wherein average particle size of barium sulfate dispersing in the alumina material is 4 μm or smaller, average particle size of alumina is 50 μm or smaller, and BET specific surface area of the alumina material is 20 to 250 m2/g; a catalyst for exhaust gas purification using the alumina material including a barium sulfate. It is preferable that the alumina material including a barium sulfate is coated onto an integrated structure-type carrier, as a catalyst layer.

摘要翻译： 公开了包括硫酸钡，催化剂或使用其的吸附剂的氧化铝材料，特别是NOx净化性能优异的排气净化用催化剂，适合作为用于净化从内燃机排出的废气中所含的有害物质的催化剂 汽油车，柴油车。 氧化铝材料含有氧化铝中分散的硫酸钡的平均粒径为4μm以下的氧化铝的5〜70质量％的硫酸钡，氧化铝的平均粒径为50μm以下， 氧化铝材料的BET比表面积为20〜250m 2 / g; 使用包含硫酸钡的氧化铝材料进行排气净化的催化剂。 作为催化剂层，优选将包含硫酸钡的氧化铝材料涂布在一体结构型载体上。

公开(公告)号：US09061266B2

公开(公告)日：2015-06-23

申请号：US14343586

申请日：2012-09-25

申请人： N.E. CHEMCAT CORPORATION

发明人： Takehiro Fujimura ,  Yoshinori Takahashi

IPC分类号： B01J23/46 ,  B01J27/053 ,  B01D53/94 ,  B01J37/02 ,  B01J23/58 ,  B01J23/63 ,  B01J35/00

CPC分类号： B01J27/053 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01J23/464 ,  B01J23/58 ,  B01J23/63 ,  B01J35/006 ,  B01J37/0244 ,  Y02A50/2324 ,  Y02T10/22

摘要： The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NOx, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-loaded porous inorganic oxide and barium sulfate (BaSO4), with loaded or not-loaded onto alumina. At least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that loaded amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being loaded or not-loaded onto alumina, respectively.

摘要翻译： 本发明公开了一种用于净化废气装置的催化剂，其具有在排气中的一氧化碳（CO），烃（HC）和氮氧化物（NOx））中的一氧化碳（CO），氮氧化物（NOx）的净化性能优异的三元催化剂（TWC） 从汽油汽车排放的气体。 由用于净化含有铑（Rh）负载的多孔无机氧化物和硫酸钡（BaSO 4）的废气的催化剂提供，其负载或未负载到氧化铝上。 Rh的至少一部分与催化剂层内的Ba独立存在，由EPMA分析确定的Rh-Ba偏差为10〜80％。 铑的负载量优选为0.05g / L〜2.0g / L，硫酸钡的量为0.5g / L〜25g / L，0.5g / L〜15g / L， 分别装载或未装载到氧化铝上。

公开(公告)号：US11686231B2

公开(公告)日：2023-06-27

申请号：US17177315

申请日：2021-02-17

申请人： N.E. CHEMCAT Corporation ,  SUBARU CORPORATION

发明人： Yasuyoshi Sasaki ,  Isao Tan ,  Shunsuke Fukutomi ,  Takehiro Fujimura ,  Shuya Omata

IPC分类号： B01J21/04 ,  B01J23/02 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J35/00 ,  F01N3/08 ,  F01N3/10 ,  F01N3/28 ,  B01J29/74 ,  B01J37/02

CPC分类号： F01N3/0814 ,  B01J23/02 ,  B01J23/42 ,  B01J29/74 ,  B01J35/002 ,  B01J37/02 ,  F01N3/0842 ,  F01N3/101 ,  F01N3/2803 ,  B01J21/04 ,  B01J2219/32296 ,  F01N2330/30 ,  F01N2370/02 ,  F01N2510/0684 ,  F01N2570/14

摘要： Provided are an LNT layered catalyst for a lean burn gasoline engine having an enhanced NOx storage rate and capable of developing a higher NOx purification rate, and an exhaust gas purification apparatus using the same, the LNT layered catalyst including a substrate, a first catalyst layer including ceria-alumina particles carrying Pt, Pd, and BaO, and a second catalyst layer including ceria-alumina particles carrying Pt and Rh, in which a content of Pt in the first catalyst layer is 0.45 to 0.85 mass %; among Pt included in the first catalyst layer, a content proportion in a first depth region is 88 to 90 mass %, and a content proportion in a second depth region is 10 to 12 mass %; a content of Ba in the first catalyst layer is 4 to 11 mass %; and the second catalyst layer is substantially free from Ba.

公开(公告)号：US20150045209A1

公开(公告)日：2015-02-12

申请号：US14343586

申请日：2012-09-25

申请人： N.E. CHEMCAT CORPORATION

发明人： Takehiro Fujimura ,  Yoshinori Takahashi

IPC分类号： B01J27/053 ,  B01J23/63 ,  B01J23/46

CPC分类号： B01J27/053 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/9202 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01J23/464 ,  B01J23/58 ,  B01J23/63 ,  B01J35/006 ,  B01J37/0244 ,  Y02A50/2324 ,  Y02T10/22

摘要： The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NOx, among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-supported porous inorganic oxide and barium sulfate (BaSO4), with supported or not-supported onto alumina, characterized in that at least a part of Rh is present independently from Ba inside a catalyst layer, and Rh—Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that supported amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being supported and not-supported onto alumina, respectively.

摘要翻译： 本发明公开了一种用于净化废气装置的催化剂，其具有在排气中的一氧化碳（CO），烃（HC）和氮氧化物（NOx））中的一氧化碳（CO），氮氧化物（NOx））的净化性能优异的三元催化剂（TWC） 从汽油汽车排放的气体。 由用于净化含有铑（Rh）负载的多孔无机氧化物和硫酸钡（BaSO 4）的废气的催化剂提供，其负载或不负载在氧化铝上，其特征在于至少一部分Rh独立于 Ba在催化剂层内，由EPMA分析确定的Rh-Ba偏差为10％〜80％。 铑的配合量优选为0.05g / L〜2.0g / L，硫酸钡的量为0.5g / L〜25g / L，0.5g / L〜15g / L的情况下， 分别支持并不支持在氧化铝上。