Patent ID: 8435917
Filing Date: 2013-05-07
Classification: B01J,B32B,C01B,Y10T

Abstract:
1. A catalyst for ammonia oxidation formed of one or more catalytic units each of which formed of a pair of blocks having a honeycomb structure containing tubular passages not interconnected through bores, comprising an ammonia oxidation catalyst, each of said blocks having height of less than 15 cm and more than 2 cm and interplaced between them a foamed layer having a height of not more than 3 cm and at least of 0.5 cm, formed of foamed material having open, randomly connected cells wherein the ceramic material of the blocks having honeycomb type structure has a perovskitic structure of ABO 3 wherein A is a rare earth-element or an alkaline-earth element or mixtures thereof and B is a transition metal element or mixtures thereof.