Activated alumina agglomerates and process for their preparation.

摘要

Activated alumina agglomerates which exhibit good adsorption properties and improved mechanical properties. The process for the preparation of the said agglomerates is characterised in that it consists in carrying out the maturing of activated alumina agglomerates, at atmospheric pressure, in the presence of a complexing agent of the Al<3+> cation and then in subjecting the said agglomerates to a thermal treatment at a temperature of between approximately 100 DEG C and approximately 500 DEG C. The alumina agglomerates which are preferentially in the form of beads are well adapted for being used as adsorbents in processes for the removal of impurities contained in a fluid. <IMAGE>