A systematic investigation of SO2 removal dynamics by coal-based activated cokes: The synergic enhancement effect of hierarchical pore configuration and gas components

- SO2 removal dynamics relate to both gas components and pore configuration.
- SO2 separate adsorption follows monolayer adsorption mechanism.
- Step experiments demonstrate that molecular oxygen catalyzes SO2 to SO3 process.
- Hierarchical pores provide migration path and buffing reservoirs for end-product.