SCR catalysts of diesel engines for reducing the Nox emissions

SCR catalysts of diesel engines for reducing the Nox emissions

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Features
Use ammonia as reducing agent to selectively reduce NOX in tail gas and reduce NOX in tail gas to N2 and H2O
CO (NH2) 2 + H2O → 2NH3 + CO2
4NH3 + 4NO + O2 → 4N2 + 6H2O
4NH3 + 6NO → 5N2 + 6H2O
4NH3 + 2NO + 2NO2 → 4N2 + 6H2O
8NH3 + 6NO2 → 7N2 + 12H2O
4NH3 + 3O2 → 2N2 + 6H2O
4NH3 + 5O2 → 4NO + 6H2O
4NH3 + 4NO + 3O2 → 4N2O + 6H2O

Features:
The zeolite (molecular sieve)-based SCR catalyst system has the advantages of a wide temperature window, good high-temperature stability, high purification efficiency, and non-toxicity. Its performance is significantly better than that of the V2O5 / WO3 / TiO catalyst. It still maintains excellent purification performance after aging at 650 ° C for 100 hours. , Is the mainstream catalyst for diesel NOX purification