WO2024209268 - SURFACE MODIFICATION OF MIXED OXIDES FOR HIGH PGM DISPERSION
National phase entry is expected:
Publication Number
WO/2024/209268
Publication Date
10.10.2024
International Application No.
PCT/IB2024/000179
International Filing Date
08.04.2024
Title **
[English]
SURFACE MODIFICATION OF MIXED OXIDES FOR HIGH PGM DISPERSION
[French]
MODIFICATION DE SURFACE D'OXYDES MIXTES POUR DISPERSION DE PGM ÉLEVÉE
Applicants **
NEO PERFORMANCE MATERIALS (SINGAPORE) PTE. LTD.
#01-19 The Galen, 61 Science Park Road
Singapore Science Park Iii
Singapore 117525, SG
Inventors
HSU, Benedict
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
NG, Szu, Hwee
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
LIU, Shijia
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
BOO, Shimin
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
TAN, Rebekah
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
HUANG, Barry
c/o Neo Performance Materials (singapore) Pte. Ltd
#01-19 The Galen, 61 Science Park Road
Singapore Science Park III
Singapore 117525, SG
Priority Data
63/494,907
07.04.2023
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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International Searching Authority |
EPO
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Translation |
|
Recalculate
* The data is based on automatic recognition. Please verify and amend if necessary.
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1478 | |
| EPO | Filing, Examination | 8734 | |
| Japan | Filing | 538 | |
| South Korea | Filing | 575 | |
| USA | Filing, Examination | 4635 |
Total: 15960 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
Disclosed herein are compositions having a mixed oxide core comprising cerium oxide and zirconium oxide, which is free of alumina. The mixed oxide core contains about 15 wt% to about 60 wt% cerium oxide and about 40 wt% to about 85 wt% zirconium oxide based on the total weight of the mixed oxide core. The mixed oxide core has a rare earth oxide coating, the rare earth being selected from the group consisting of cerium, lanthanum, neodymium, praseodymium, yttrium, and mixtures thereof. Further, precious metals, including palladium or rhodium, are dispersed on the surface of these composition and the compositions have higher rhodium or palladium dispersion versus a composition comprising a mixed oxide core without a rare earth oxide coating. Further disclosed are processes of producing these compositions. The compositions may be used as part of a catalyst system.[French]
L'invention concerne des compositions ayant un cœur d'oxyde mixte comprenant de l'oxyde de cérium et de l'oxyde de zirconium, qui est exempt d'alumine. Le cœur d'oxyde mixte contient d'environ 15 % en poids à environ 60 % en poids d'oxyde de cérium et d'environ 40 % en poids à environ 85 % en poids d'oxyde de zirconium sur la base du poids total du cœur d'oxyde mixte. Le cœur d'oxyde mixte présente un revêtement d'oxyde de terre rare, la terre rare étant choisie dans le groupe constitué par le cérium, le lanthane, le néodyme, le praséodyme, l'yttrium et des mélanges de ceux-ci. En outre, des métaux précieux, notamment du palladium ou du rhodium, sont dispersés sur la surface de ces compositions et les compositions ont une dispersion de rhodium ou de palladium plus élevée par rapport à une composition comprenant un cœur d'oxyde mixte sans revêtement d'oxyde de terre rare. L'invention concerne en outre des processus de production de ces compositions. Les compositions peuvent être utilisées dans le cadre d'un système de catalyseur.