公开(公告)号：US20220184584A1

公开(公告)日：2022-06-16

申请号：US17432176

申请日：2020-02-28

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Toshihiro SASAKI

IPC: B01J23/63 ,  C01G25/00 ,  B01J37/04 ,  B01J37/08 ,  B01J37/03 ,  B01J37/00 ,  B01J23/00 ,  B01J35/10

Abstract: The present invention relates to a mixed oxide composition based on zirconium and cerium, to the process for preparing it and to its use in the field of catalysis. The mixed oxide is characterized by a high specific surface area and a specific porosity after calcination at 1100° C.

公开(公告)号：US20220055017A1

公开(公告)日：2022-02-24

申请号：US17417450

申请日：2019-12-19

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Kaoru NISHIMURA ,  Toshihiro SASAKI ,  Mitsuhiro OKAZUMI

IPC: B01J23/10 ,  B01J35/02 ,  B01J35/10 ,  B01J37/03 ,  B01J37/10 ,  B01J37/18 ,  B01J6/00

Abstract: The present invention relates to cerium oxide particles that have excellent heat resistance under hydrothermal conditions at high temperature. The present invention also relates to a method for preparing such cerium oxide particles and to a catalytic composition comprising said cerium oxide.

公开(公告)号：US20150375203A1

公开(公告)日：2015-12-31

申请号：US14765496

申请日：2014-02-05

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Toshihiro SASAKI ,  Jun TOKUDA ,  Emmanuel ROHART

IPC: B01J23/10 ,  B01D53/86 ,  B01J21/06 ,  B01J37/03 ,  B01J35/10 ,  B01J23/00 ,  B01J37/08 ,  B01D53/94 ,  B01J23/14

CPC classification number: B01J23/10 ,  B01D53/86 ,  B01D53/8603 ,  B01D53/8621 ,  B01D53/8628 ,  B01D53/864 ,  B01D53/8643 ,  B01D53/8668 ,  B01D53/8675 ,  B01D53/8687 ,  B01D53/94 ,  B01D53/945 ,  B01D2255/206 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/2094 ,  B01D2255/407 ,  B01D2255/9207 ,  B01D2257/106 ,  B01D2257/306 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/7022 ,  B01D2257/7027 ,  B01D2257/708 ,  B01D2257/90 ,  B01D2258/012 ,  B01D2258/06 ,  B01J21/066 ,  B01J23/002 ,  B01J23/12 ,  B01J23/14 ,  B01J35/1014 ,  B01J37/009 ,  B01J37/031 ,  B01J37/08 ,  C01G25/006 ,  C01P2002/52 ,  C01P2006/12 ,  C01P2006/13 ,  Y02T10/22

Abstract: The present invention relates to compositions based on zirconium oxide and cerium oxide that exhibit a sufficiently high specific surface area after calcination and a low maximum reduction temperature of the oxide after calcination. Compositions of the present invention may be notably used in various catalytic systems, such as for the treatment of exhaust gases from internal combustion engines.

Abstract translation: 本发明涉及基于氧化锆和氧化铈的组合物，其在煅烧后表现出足够高的比表面积，并且煅烧后氧化物的最大还原温度低。 本发明的组合物可以特别地用于各种催化体系，例如用于处理来自内燃机的废气。

公开(公告)号：US20220118427A1

公开(公告)日：2022-04-21

申请号：US17417449

申请日：2019-12-19

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Kaoru NISHIMURA ,  Toshihiro SASAKI ,  Mitsuhiro OKAZUMI

IPC: B01J23/10 ,  B01J37/08 ,  B01J35/10 ,  B01J23/44 ,  B01J27/232 ,  B01D53/94 ,  F01N3/20

Abstract: The present invention relates to the use of a resistant cerium oxide for the preparation of Lean NOx Trap catalytic composition. The invention also relates to such catalytic composition and to a method of treatment of an exhaust gas to decrease the NOx content using said catalytic composition.

公开(公告)号：US20170152421A1

公开(公告)日：2017-06-01

申请号：US15321360

申请日：2015-06-24

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Manabu YUASA ,  Toshihiro SASAKI ,  Eisaku SUDA ,  Lauriane DALENCON

IPC: C09K3/14 ,  B01J35/10 ,  B01J35/00 ,  B01D53/94 ,  B01J37/03 ,  B01J37/08 ,  B01J37/06 ,  C09G1/02 ,  B01J23/10 ,  B01J37/04

CPC classification number: C09K3/1409 ,  B01D53/944 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20715 ,  B01D2255/40 ,  B01D2255/407 ,  B01D2255/908 ,  B01J23/10 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/031 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  C01F17/0043 ,  C01G25/006 ,  C01P2002/60 ,  C01P2004/45 ,  C01P2006/13 ,  C09G1/02 ,  C09K3/1436 ,  C09K3/1454

Abstract: The present invention concerns a process for the production of metal doped cerium compositions comprising a cerium oxide and a metal oxide by precipitation. The invention also concerns metal doped cerium compositions providing high crystallites size and exhibiting high thermal stabilities, which may be used as a catalytic support or for polishing applications.