CATALYSTS FOR THE TREATMENT OF INDUSTRIAL GASES CONTAINING HYDROGENATED DERIVATIVES AND POSSIBLY CARBONATED DERIVATIVES OF SULPHUR AND ALSO OTHER GASES AND PROCESSES FOR THE PREPARATION THEREOF

摘要

Catalysts for Claus reaction treatment of industrial gases containing hydrogen sulphide and sulphur dioxide in which the catalyst has a specific surface area of at least 80 sq.m./g and is composed of activated alumina and a compound of lanthanum, a lanthanide series metal of atomic number 58 to 71 or a metal of Group IIIB of the periodic classification of elements which is present, when calculated as the oxide, in an amount within the range of 1-20% by weight of the catalyst.