A manganese-cerium oxide catalyst on activated carbon made from rice husk was tested for removing nitrogen oxides from gas streams with ammonia. It reached nearly complete conversion at 240 degrees C and resisted sulfur dioxide better than a commercial carbon support.
Key numbers
- Nearly 100% nitrogen oxide conversion at 240 degrees C for the 5 wt% catalyst (abstract).
Methods (brief)
Impregnation synthesis, catalytic activity tests and spectroscopic characterization including in situ DRIFTS.
Evidence fitness
Off-topic for dietary exposure: air pollution control chemistry; rice husk is only a carbon source. Does not support dietary exposure or toxicity claims.
Limitations
Laboratory material or biomedical study; no environmental, food or human exposure measurements.
Related evidence
Update history
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