Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1981-03-27
1983-05-10
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423231, 423244, 423245, 252447, 604333, B01D 5336
Patent
active
043829139
ABSTRACT:
There is provided a process for the adsorption and catalytic decomposition of foul-smelling intestinal gases, particularly mercaptans, wherein the intestinal gases are passed through a highly specific adsorbent which, out of a mixture of water vapor, methanol, carbon monoxide and carbon dioxide and various sulfur-containing gases, particularly mercaptan-containing gases, catalytically decomposes and adsorbs only the sulfur and mercaptan compounds and optionally desorbs the non-smelling fractions. An absorbent for use in the method is characterized in that it contains an inert, highly porous solid having a specific surface according to BET of from 900 to 1800 m.sup.2 /g or pyrogenic silicon dioxide having a surface of from 50 to 500 m.sup.2 /g, the specific surfaces having been determined by argon adsorption at -196.degree. C., which are covered over their surface with from 0.1 to 5% by weight of aluminium, zinc, chromium or iron, based on the weight of the solid having a specific surface of 1000 m.sup.2 /g, or a mixture of metal-coated, inert highly-porous solids of this type.
REFERENCES:
patent: 3416293 (1968-12-01), Alexander
patent: 3471545 (1969-10-01), Giordano et al.
patent: 3890245 (1975-06-01), Berg et al.
patent: 4058483 (1977-11-01), Henbest
Chmiel Horst
Hellwig Gunter
Fraunhofer-Gesellschaft zur Forderung der angewandten
Thomas Earl C.
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