ANVENDNING AV EN KATALYSATOR VILKEN ER BASERAD PA AKTIV ALUMINIUMOXID OCH SOM INNEHALLER FORENINGAR AV YTTRIUM OCH/ELLER LANTANIDER

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.