公开(公告)号：US20210016251A1

公开(公告)日：2021-01-21

申请号：US16933954

申请日：2020-07-20

Applicant: RHODIA OPERATIONS

Inventor： Julien HERNANDEZ ,  Rui Miguel JORGE COELHO MARQUES ,  Emmanuel ROHART

IPC: B01J23/20 ,  B01J37/03 ,  C01G33/00 ,  B01J23/00 ,  C01F17/30 ,  C01F17/206

Abstract: A composition based on cerium and niobium oxide in a proportion of niobium oxide of 2% to 20% is described. This composition can include zirconium oxide, optionally 50% of cerium oxide, 2% to 20% of niobium oxide, and at most 48% of zirconium oxide. Also described, is the use of the composition for treating exhaust gases.

公开(公告)号：US20160279608A1

公开(公告)日：2016-09-29

申请号：US14778176

申请日：2014-03-12

Applicant: RHODIA OPERATIONS

Inventor： Laure Jeanne Simone BISSON ,  Rui Miguel JORGE COELHO MARQUES ,  Fabien OCAMPO ,  Virginie HARLE ,  Julien HERNANDEZ

IPC: B01J23/20 ,  B01D53/94 ,  B01J37/03 ,  B01J37/10 ,  B01J29/06 ,  B01J37/04

CPC classification number: B01J23/20 ,  B01D53/9413 ,  B01D53/9418 ,  B01D2255/206 ,  B01D2255/2065 ,  B01D2255/207 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/2092 ,  B01D2255/2094 ,  B01D2255/30 ,  B01D2255/407 ,  B01J23/14 ,  B01J29/06 ,  B01J35/1014 ,  B01J37/031 ,  B01J37/04 ,  B01J37/08 ,  B01J37/10 ,  B01J2523/00 ,  B82Y30/00 ,  C01G33/006 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  Y02A50/2325 ,  B01J2523/3712 ,  B01J2523/43 ,  B01J2523/48 ,  B01J2523/56

Abstract: The composition of the invention is based on oxides of zirconium, cerium, niobium and tin in proportions by weight of oxide of between 5% and 50% for cerium oxide, 5% and 20% for niobium oxide, 1% and 10% for tin oxide and the remainder being zirconium oxide. The composition may be used in a catalytic system for an SCR-type process for treating a gas that contains nitrogen oxides (NOx).

Abstract translation: 本发明的组合物是以氧化铈，铈，铌和锡的氧化物为基础，氧化铈的氧化物的比例为5％至50％，氧化铌为5％至20％，氧化铌为5％至20％，锡为10％ 氧化物，其余为氧化锆。 该组合物可以用于用于处理含有氮氧化物（NOx）的气体的SCR型方法的催化体系中。

公开(公告)号：US20190202710A1

公开(公告)日：2019-07-04

申请号：US16302481

申请日：2017-05-17

Applicant: RHODIA OPERATIONS

Inventor： Naotaka OHTAKE ,  Fabien OCAMPO ,  Rui Miguel JORGE COELHO MARQUES

IPC: C01F17/00 ,  B01J23/10 ,  B01J35/10 ,  B01J37/10 ,  B01J37/03

CPC classification number: C01F17/0043 ,  B01D53/94 ,  B01D2255/2065 ,  B01D2255/91 ,  B01D2255/9207 ,  B01J23/10 ,  B01J35/1014 ,  B01J35/1047 ,  B01J37/031 ,  B01J37/08 ,  B01J37/10 ,  C01P2002/50 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16

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：US20190134608A1

公开(公告)日：2019-05-09

申请号：US16096279

申请日：2016-04-26

Applicant: RHODIA OPERATIONS

Inventor： Simon IFRAH ,  Wie LI ,  Valérie BUISSETTE ,  Stéphane DENAIRE ,  Rui Miguel JORGE COELHO MARQUES

IPC: B01J23/00 ,  B01J21/06 ,  B01J23/10 ,  B01J35/10 ,  B01J37/03 ,  C01G25/00 ,  B01D53/94

Abstract: Disclosed 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; said mixed oxide exhibiting a high thermal resistance and are in particular capable of maintaining a large specific surface area even in a high temperature environment. Also disclosed is a process for the synthesis of such compositions.

公开(公告)号：US20210354111A1

公开(公告)日：2021-11-18

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: B01J21/06 ,  B01J35/10 ,  B01J6/00 ,  F01N3/08 ,  F01N3/10 ,  B01J35/00 ,  B01J37/02 ,  B01J23/46 ,  B01J23/83

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：US20190168188A1

公开(公告)日：2019-06-06

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 ,  B01J21/06 ,  B01J23/14 ,  B01J23/46 ,  B01J35/10 ,  B01J37/04 ,  B01J37/08 ,  B01J37/03 ,  B01J37/00 ,  B01J37/06 ,  B01J37/02 ,  B01D53/94 ,  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.