Abstract:
Vorgeschlagen wird ein geformter Katalysator mit Kupfer(II)chlorid oder Kupferoxichlorid als aktiver Komponente, dadurch gekennzeichnet, daß er aus a) 10 bis 95 Gew.% porösem Trägermaterial, auf dessen Oberfläche sich 2 bis 15 Gew.% Kupferionen in Form von Kupfer(II)chlorid und/oder Kupferoxichlorid und O bis 5 Gew %. Alkalimetallionen befinden; und b) 5 bis 90 Gew %. inertem Material. besteht, sowie ein Verfahren zur Herstellung dieses Katalysators.
Abstract:
In NOx removal from waste gases from coal combustion by selective catalytic redn. with ammonia in the presence of TiO2-based catalysts contg. catalytically effective amounts of oxides of V, W and/or Mo, the novelty is that the catalysts have a BET specific surface of 5-60 (pref. 10-50) sq.m./g., a pore vol. of 0.15-0.40 ml/g. and max. 35 (pref. max. 20)% content of pores with less than 200 Angstroms dia.
Abstract:
Catalyst containing metallic oxides, which in addition to oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten and/or chromium, also contains sulphates of the alkaline earth metals, and which is used in a process for the oxidative breakdown of organic compounds in the waste gases from incinerator plants.
Abstract:
A molded supported catalyst which contains from 2 to 13% by weight of copper ions in the form of copper(II) chloride and/or copper oxychloride and from 0.2 to 3% by weight of alkali metal ion on a columnar carrier and has a diameter of from 4 to 7 mm and a height which is from 0.35 to 0.75 times the diameter is particularly suitable for preparing 1,2-dichloroethane by oxychlorination of ethylene.
Abstract:
The application relates to a process for the preparation of a copper-containing catalyst for low temperature conversion which, in addition to copper oxide, contains zinc oxide and aluminium oxide as essential components, by precipitation of the water-soluble salts from aqueous solution in an alkaline precipitant at pH 5.5 to 7.5 and a temperature of 30 to 90@C. After completion of the formation of precipitate, the precipitation product is aged or conditioned, the precipitate is separated off from the reaction solvent, dried and subjected to a temperature treatment and the resulting solid is mixed with a tabletting aid and tabletted to form catalyst mouldings.