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：US20190314761A1

公开(公告)日：2019-10-17

申请号：US16302749

申请日：2017-04-11

申请人： N.E. CHEMCAT CORPORATION

发明人： Takuya Katoh ,  Akito Takayama

IPC分类号： B01D53/94 ,  B01J35/04 ,  B01J23/63 ,  B01J37/02 ,  B01J37/08 ,  F01N3/10 ,  F01N3/28

摘要： A three-way catalyst for purifying exhaust including noble metal components, enables sintering of the noble metal to be suppressed even at high temperature, enables carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) to be removed and a method for purifying exhaust gas. A carrier having a honeycomb structure is coated with two or more layers of the catalyst compositions, an upper layer including a heat resistant inorganic oxide supporting Pd and a La-containing oxide, a lower layer including a heat resistant inorganic oxide supporting Rh. The content of La in terms of La2O3 is 9.6 g/L to 23 g/L, the content of Ce in terms of CeO2 is 5 g/L to 20 g/L, and the content of Ba in terms of BaO is 1.2 g/L or less per unit volume of the honeycomb structure.

公开(公告)号：US10857520B2

公开(公告)日：2020-12-08

申请号：US16347274

申请日：2017-10-24

申请人： N.E. CHEMCAT CORPORATION

发明人： Yoshinori Takahashi ,  Akito Takayama ,  Hiroyuki Hara

IPC分类号： B01D53/94 ,  B01J23/63 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08 ,  B01J37/18 ,  F01N3/10 ,  F01N3/28

摘要： An exhaust gas-purifying three-way catalyst containing: (i) base material particles of a Nd-solid dissolved zirconia-based complex oxide comprising Nd and Zr as constituent metal elements in the following mass proportions: ZrO250 to 75% by mass; and Nd2O3 25 to 50% by mass, in terms of oxides; and (ii) Pd catalyst particles supported on the base material particles, wherein the Nd-solid dissolved zirconia-based complex oxide further contains at least one or more rare earth elements selected from the group consisting of yttrium, scandium, lanthanum, and praseodymium, as a constituent metal element, in an amount of a total of more than 0% by mass to 20% by mass or less in terms of an oxide.

公开(公告)号：US10765998B2

公开(公告)日：2020-09-08

申请号：US16302749

申请日：2017-04-11

申请人： N.E. CHEMCAT CORPORATION

发明人： Takuya Katoh ,  Akito Takayama

IPC分类号： B01J23/63 ,  B01J35/04 ,  F01N3/10 ,  F01N3/28 ,  B01D53/94 ,  B01J37/02 ,  B01J37/08

摘要： A three-way catalyst for purifying exhaust including noble metal components, enables sintering of the noble metal to be suppressed even at high temperature, enables carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) to be removed and a method for purifying exhaust gas. A carrier having a honeycomb structure is coated with two or more layers of the catalyst compositions, an upper layer including a heat resistant inorganic oxide supporting Pd and a La-containing oxide, a lower layer including a heat resistant inorganic oxide supporting Rh. The content of La in terms of La2O3 is 9.6 g/L to 23 g/L, the content of Ce in terms of CeO2 is 5 g/L to 20 g/L, and the content of Ba in terms of BaO is 1.2 g/L or less per unit volume of the honeycomb structure.