US 12,508,576 B2Granted

Catalyst for reducing ammonia emissions

AssigneeUmicore AG & Co. KG

InventorsBirgit Friedrich, Gordon Keitl

Life of this patent

Estimating the term…

Abstract

The present invention relates to a composition comprising platinum supported on titanium oxide, the platinum particles having an average particle diameter of 50-200 nm. The composition has a surprisingly low light-off temperature for the ammonia oxidation and a high selectivity for oxidation to N2.

Claims21

Dependent claims

Composition comprising platinum in the form of platinum particles supported on metal oxide A, characterized in that the platinum particles have an average particle diameter of 50-200 nm, wherein metal oxide A is titanium oxide.

Dependencies are inferred from the claim text.

Facts

Application: 17/636,554Filed 18 Aug 2020
Priority: EP 1919242820 Aug 2019
Published: US 2022/0297093 A122 Sep 2022
Granted: 30 Dec 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification36 codes

B01J 23/42
Of the platinum group metals: platinum
B01D 53/9436
Removing only nitrogen compounds: ammonia
B01J 35/19
Catalysts, in general, characterised by their form or physical properties: catalysts containing parts with different compositions
B01J 35/40
Catalysts, in general, characterised by their form or physical properties: characterised by dimensions, e.g. grain size

Family

US 2022/0297093 A1Pre-grant publication · published 22 Sep 2022
US 12,508,576 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results