The hydrolysis of COS and CS{sub 2} on titania in Claus plants
- Utrecht Univ. (Netherlands)
COS and CS{sup 2} are adding considerably to the emission of SO{sub 2} from Claus plants. The carbon sulfides can be catalytically hydrolyzed to H{sub 2}S and CO{sub 2} by using {gamma}-alumina or titania. Titania catalysts have proved to be better oxygen resistant, though titanium sulfate is quite stable and raises the acidity. The formation of sulfates appeared to decrease the activity of titania, but due to the easy reduction of the sulfates by H{sub 2}S, the titania catalyst remains active under Claus operating conditions. Subsequently discussed, is the influence of the water pressure of the COS and CS{sub 2} hydrolysis rate, The water pressure is varying throughout the Claus plant, as the temperature of operation, and those factors appeared to be of major importance on the hydrolysis rate. Finally, the possibility of improving the catalyst with promoters will be discussed in relation with the mechanism involved in the hydrolysis reaction.
- OSTI ID:
- 142036
- Report Number(s):
- CONF-930304-; TRN: 93:003688-1726
- Resource Relation:
- Conference: 205. American Chemical Society national meeting, Denver, CO (United States), 28 Mar - 2 Apr 1993; Other Information: PBD: 1993; Related Information: Is Part Of 205th ACS national meeting; PB: 1951 p.
- Country of Publication:
- United States
- Language:
- English
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