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Duralyst OS-300 is a high surface area, iron oxide promoted activated alumina catalyst used to scavenge oxygen in Claus reactors.
Duralyst OS-300 serves as a top-layer catalyst in Claus converters, effectively reacting with oxygen to prevent sulfation of alumina catalyst. Oxygen reacting with SO2 on the catalyst surface to form sulfate is a major cause of catalytic activity loss. This specially promoted catalyst is particularly effective in mitigating sulfate formation on activated alumina in converters where oxygen infiltration poses a challenge.
| Properties | UOM | Specifications | |
|---|---|---|---|
| 4.8 mm (3/16”) | 6.4 mm (1/4”) | ||
| Al2O3+Promoter | % | >93.5 | |
| SiO2+Na2O | % | <0.5 | |
| Shape | - | Sphere | Sphere |
| Bulk Density | g/cm³ | 0.68-0.78 | 0.68-0.78 |
| Surface Area | ㎡/g | >250 | >250 |
| Crush Strength | N | >100 | >150 |
| L.O.I. (250-1000 °C) | %wt | <7 | <7 |
| Attrition Rate | %wt | <1.0 | <1.0 |
| Shelf lifetime | Year | >5 | >5 |
| Operating Temperature | °C | 180-400 | |
