A Survey of Metal Oxides as Sorbents for Oxides of Sulfur

摘要

Seventeen metal oxides, on one or more supporting oxides, were evaluated for their sorbing and regenerating characteristics. The sorbents investigated were for the most part made by co-precipitation of the hydroxides of the 'active' and 'supporting' oxides followed by calcining, analogous to the preparation of alkalized alumina. Several catalyst supports impregnated with the 'active oxide' as well as commercially available materials were also evaluated. The extent and rate of sorption and regeneration of these materials was determined by following the weight change of a sample exposed to a synthesized typical flue or regenerating gas with time. On comparison one finds that some of the copper oxide-alumina and manganese oxide-alumina sorbents give generally good performance as sorbents. (Author)