Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1995-03-24
1996-12-17
Pal, Asok
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423235, 4232391, 4232421, 42324401, B01J 800, C01B 1700
Patent
active
055850820
ABSTRACT:
An alumina sorbent capable of adsorbing NOx and SOx from waste gases and being regenerated by heating above 650.degree. C. is made by incorporating an alumina stabilizing agent into the sorbent. A preferred method is to add the stabilizer when the alumina is precipitated. The precipitated powder is formed subsequently into a slurry, milled and spray dried to form the stabilized spheroidal alumina particles having a particle size of less than 500 microns. These particles are impregnated with an alkali metal or alkaline earth metal to form the stabilized sorbent. Alumina stabilizers include one or more of silica, lanthana, other rare earths, titania, zirconia and alkaline earths.
REFERENCES:
JP 61/086419 (Mitsui Aluminum), May 1, 1986 -Abstract.
Beeckman Jean W.
Hager Michael J.
Plecha Stanislaw
Ziebarth Michael S.
Artale Beverly J.
Bullock In Suk
Pal Asok
W. R. Grace & Co.,-Conn.
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