Patent · US Expired

Catalyst for removing the nitrite and/or nitrate content in water

US5122496A · kind A · utility

14Cited by

4References

19Claims

0Family size

Assignee

Solvay Umweltchemie GmbH · DE

Inventors

Klaus-Dieter Vorlop · Braunschweig, DE
Thomas Tacke · Friedrichsdorf, DE
Michael Sell · Peine, DE
Gunther Strauss · Hannover, DE

Key dates

Filing date	Sep 4, 1990
Grant date	Jun 16, 1992
Priority date	—
Expiry date	Sep 4, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/903
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A catalyst is disclosed made from a porous inorganic carrier material impregnated with a metal component selected from palladium, rhodium, mixtures of palladium and rhodium, and mixtures of palladium and a metal of the copper group, in which the carrier has a bimodal pore radius distribution with a first pore radius distribution maximum in the range of up to 400 .ANG., preferably 50 to 350 .ANG., and with a proportion of at least 20%, relative to the overall pore volume, of macropores having a radius of at least 2,000 .ANG., preferably 5,000 to 20,000 .ANG..

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