Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1993-01-06
1994-01-04
Dees, Carl F.
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
588207, 423240R, 423659, A62D 300, C01B 707
Patent
active
052762491
ABSTRACT:
A new class of metal-exchanged, metal-impregnated zeolite catalysts has been prepared for the oxidation of halogenated organics including chlorinated, fluorinated and chloro/fluoro hydrocarbons. These catalysts are supported or unsupported, comprising from 0 weight percent, hereinafter wt.%, to about 95 wt. % of a binder, from about 10 wt. % to about 95 wt. % of a metal-exchanged zeolite, and from about 0.2 wt. % to about 12 wt. % of an impregnating metal compound, said percentage being calculated as the metal loading on an oxide basis, where the metal in the metal-exchanged zeolite can be selected from the representative and illustrative group consisting of V, Cr, Co, Ni, Cu, Fe, Mo, and Mn and the impregnating metal compound can be selected from the representative and illustrative group consisting of compounds of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Mo, Pd, and Pt. A process for making the catalysts and a process for the oxidation of the halogenated organics are disclosed which occur at relatively low temperatures, from about 100.degree. C. to about 650.degree. C., and at pressures near atmospheric and for residence times from about 0.01 seconds to about 20 seconds.
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Chatterjee & Greene, "Oxidative Catalysis of Chlorinated Hydrocarbons by Metal-Loaded . . . " J. of Catalysis 1991 pp. 76-85.
Chatterjee Sougato
Greene Howard L.
Dees Carl F.
The University of Akron
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