Patent · US Expired

Supported catalysts

US5232889A · kind A · utility

27Cited by
3References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 5, 1992
Grant dateAug 3, 1993
Priority date—
Expiry dateFeb 5, 2012

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02T10/12
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Novel supported catalysts, well adapted for the catalytic conversion of exhaust gases emanating from internal combustion engines, include a porous carrier material, e.g., alumina spheres, such porous carrier material having a catalytically effective amount of at least one non-platinum group catalytically active element, e.g., cerium, essentially homogeneously concentrated throughout the depth of a defined peripheral face surface layer (outer band or ring) thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.