Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1993-11-10
1995-11-07
Lewis, Michael
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
95274, 95902, 210661, C01B 1702
Patent
active
054645980
ABSTRACT:
A process for impregnating zeolite with a quaternary ammonium cation (QAC) and then coating the impregnated zeolite with permanganate (such as potassium permanganate), and for impregnating zeolite with permanganate and then coating the impregnated zeolite with a QAC, and coated, impregnated zeolite crystals resulting from either process. Either coating acts as a protective agent for the impregnating substance in each zeolite crystal's interior, and allows regulated time release control of the impregnating substance, thus permitting a controlled diffusion (or absorption) rate in applications in which the coated, impregnated zeolite is employed to absorb contaminants from air or water. Combinations of coated and uncoated zeolite crystals can be chosen to match specific environmental circumstances calculable by analysis of the air or water to be treated. Mixtures of coated and uncoated QAC-impregnated zeolite can be used to react with organics such as benzene, toluene, and xylene, uncoated zeolite impregnated with permanganate, and mixtures of coated and uncoated permanganate-impregnated zeolite can be used to react with hydrogen sulfide, acetone, ethylene glycols, formaldehyde, and other contaminants. Other embodiments of the invention are methods for producing zeolite crystals impregnated with manganese dioxide, and for using such manganese dioxide-impregnated crystals to absorb contaminants from fluid.
REFERENCES:
patent: 2885368 (1959-05-01), Hess et al.
patent: 3049399 (1962-08-01), Gamson et al.
patent: 3298780 (1967-01-01), Fleck
patent: 4554261 (1985-11-01), Gergely et al.
patent: 4581219 (1986-04-01), Imada et al.
patent: 4610882 (1986-09-01), Laurent et al.
patent: 4871701 (1989-10-01), Danner et al.
patent: 5264227 (1993-11-01), Laroche et al.
patent: 5302354 (1994-04-01), Watvedt et al.
patent: 5346876 (1994-09-01), Ichimura et al.
Translated Abstract of '863 Reference.
*Material Safety Data Sheet (5 pages), Chemax, Inc. (Jan. 30, 1992).
*Cadena, et al., Treatment of Waters Contaminated with BTX and Heavy Metals Using Tailored Zeolites, Feb. 1992, New Mexico Waste-Management Education and Research Consortium, Technical Completion Report (Project No. WERC-91-41), 22 pages.
*Gao, et al., Use of Tailored Zeolites for Removal of Benzene and Toluene from Water, 45th Purdue Industrial Waste Conference Proceedings, pp. 509-515, Lewis Publishers, Inc., Chelsea, Mich., 1991 (no month).
*Brochure entitled "Carusorb.RTM. 200," by Carus (1 page) (no date).
Dunn Jr. Thomas G.
Lewis Michael
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