Claims
- 1. An activated alumina catalyst containing sodium oxide for promoting the reaction of hydrogen sulfide and sulfur dioxide so that such compounds may be removed from gases, the catalyst having increased resistance to sulfate poisoning and increased catalytic activity, characterized by the catalyst having a specific surface area greater than 100 m.sup.2 /g (BET) and a sodium oxide content in an amount greater than 1.0 wt % (1100.degree. C. calcined basis), the remainder being activated alumina.
- 2. The catalyst of claim 1 wherein the LOI (400.degree. to 1100.degree. C.) is less than 6.0 wt %.
- 3. The catalyst of claim 2 wherein the LOI is less than 5.0 wt %.
- 4. The catalyst of claim 2 wherein the LOI is between 2.0 and 4.0 wt %.
- 5. The catalyst of claim 2 wherein the surface area is greater than 300 m.sup.2 /g (BET).
- 6. The catalyst of claim 2, produced by a method comprising sizing alumina to a particle size of about 10 microns or less, rapidly activating the alumina particles by exposure to a temperature of about 300.degree. to 1000.degree. C. for a fraction of a second to several seconds, agglomerating the activated alumina in the presence of water, aging in the presence of water at a pH greater than 7 and activating at 350.degree. to 900.degree. C.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of U.S. Ser. No. 362,383, filed Mar. 26, 1982, now U.S. Pat. No. 4,568,664 which is a continuation of U.S. Ser. No. 170,638, filed July 21, 1980, now U.S. Pat. No. 4,364,858, issued Dec. 21, 1982.
US Referenced Citations (6)
Non-Patent Literature Citations (2)
Entry |
Kaiser Chemicals Product Data on S-201, S-501, S-701 Alumina. |
Pechiney-Saint-Gobain Product Data on DR Catalyst. |
Continuations (2)
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Number |
Date |
Country |
Parent |
362383 |
Mar 1982 |
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Parent |
170638 |
Jul 1980 |
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