Manganese-based regenerable sorbents for high temperature H2S removal

- Co-precipitation method was used to prepare Mn/Al sorbents for 850 °C H2S removal.
- Regeneration of sulfided sorbents with diluted air, SO2 or steam was studied.
- Elemental S can be obtained as a regeneration product with diluted air.
- A two step regeneration with 50% SO2 followed with 3% O2 at 850 °C can provide elemental sulfur and complete regeneration.
- Steam was another way for complete regeneration.