公开(公告)号：US11426718B2

公开(公告)日：2022-08-30

申请号：US16302481

申请日：2017-05-17

Applicant: RHODIA OPERATIONS

Inventor： Naotaka Ohtake ,  Fabien Ocampo ,  Rui Miguel Jorge Coelho Marques

IPC: B01J37/03 ,  B01J37/10 ,  B01J23/10 ,  B01J35/10 ,  B01J37/08 ,  C01F17/235 ,  B01D53/94

Abstract: The present invention relates to cerium oxide particles that have excellent heat resistance and/or pore volume especially useful for catalysts, functional ceramics, solid electrolyte for fuel cells, polishing, ultraviolet absorbers and the like, and particularly suitable for use as a catalyst or cocatalyst material, for instance in catalysis for purifying vehicle exhaust gas. The present invention also relates to a method for preparing such cerium oxide particles, and a catalyst, such as for purifying exhaust gas, utilizing these cerium oxide particles.

公开(公告)号：US11964255B2

公开(公告)日：2024-04-23

申请号：US17278374

申请日：2019-09-23

Applicant: RHODIA OPERATIONS

Inventor： Simon Ifrah ,  Laure Jeanne Simone Bisson ,  Benjamin Faure ,  Rui Miguel Jorge Coelho Marques ,  Wei Li ,  Ling Zhu

IPC: B01J21/04 ,  B01J6/00 ,  B01J21/06 ,  B01J21/08 ,  B01J21/12 ,  B01J21/16 ,  B01J23/10 ,  B01J23/46 ,  B01J23/745 ,  B01J23/83 ,  B01J23/89 ,  B01J35/00 ,  B01J35/10 ,  B01J37/02 ,  F01N3/08 ,  F01N3/10

CPC classification number: B01J21/066 ,  B01J6/001 ,  B01J23/464 ,  B01J23/83 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/0201 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/101

Abstract: Disclosed are a mixed oxide composition based on zirconium and cerium exhibiting a high reducibility, the process for preparing it and its use in the field of catalysis.

公开(公告)号：US20250153145A1

公开(公告)日：2025-05-15

申请号：US19022984

申请日：2025-01-15

Applicant: RHODIA OPERATIONS

Inventor： Simon Ifrah ,  Wie Li ,  Valérie Buissette ,  Stéphane Denaire ,  Rui Miguel Jorge Coelho Marques

IPC: B01J23/00 ,  B01D53/94 ,  B01J21/06 ,  B01J23/10 ,  B01J23/63 ,  B01J35/61 ,  B01J35/63 ,  B01J35/64 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  C01G25/00

Abstract: Provided is a composition comprising at least a cerium- and zirconium-based mixed oxide comprising zirconium, cerium, lanthanum and optionally at least one rare earth other than cerium and lanthanum, obtained by an advantageous process; the mixed oxide exhibiting a high thermal resistance and are in particular capable of maintaining a large specific surface area even in use in a high temperature environment. Also provided are a process for the synthesis of the compositions, a catalytic system, and a process for treatment of exhaust gasses.

公开(公告)号：US11547982B2

公开(公告)日：2023-01-10

申请号：US16096280

申请日：2017-04-25

Applicant: RHODIA OPERATIONS

Inventor： Rui Miguel Jorge Coelho Marques ,  Simon Ifrah ,  Boris Chabert

IPC: B01J23/10 ,  C01G25/00 ,  B01D53/94 ,  B01J21/06 ,  B01J23/14 ,  B01J23/46 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  F01N3/10

Abstract: The invention relates to a mixed oxide composed of zirconium, cerium, lanthanum and at least one rare earth oxide other than cerium and lanthanum, having a specific porosity and a high specific surface area; to the method for preparing same and to the use thereof in catalysis.