FIELD: sorbents. SUBSTANCE: alumina-based sorbent capable to adsorb nitrogen and sulfur oxides and be regenerated at temperature higher than 600 C is prepared by including into sorbent alumina stabilizing agent. Preferable is addition of stabilizer when alumina is precipitated. Precipitated powder is then used for preparing suspension where alumina is pulverized and suspension is dropwise poured out to form stabilized spheroid alumina particles. These are impregnated with alkali or alkali-earth metal to produce stabilized sorbent. As alumina stabilizer, silicon oxide is utilized. EFFECT: increased sorbent stability. 15 cl, 3 dwg, 1 tbl
Authors
Dates
1997-08-20—Published
1992-04-23—Filed