Active catalytic material is the core reactive substance in SCR catalysts that facilitates nitrogen oxide reduction through selective catalytic reduction.
Active catalytic material refers to the chemically active component within Selective Catalytic Reduction (SCR) catalysts that enables the conversion of nitrogen oxides (NOx) into nitrogen (N2) and water (H2O) through redox reactions. These materials typically consist of metal oxides or zeolites that provide active sites for ammonia adsorption and NOx reduction at specific temperature ranges (typically 300-400°C).
诱因 → 失效模式 → 工程缓解
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The active catalytic material facilitates the chemical reduction of nitrogen oxides (NOx) to nitrogen and water using ammonia as a reducing agent, enabling compliance with emission regulations.
Optimal performance occurs between 300-400°C. Below this range, reaction kinetics slow; above this range, thermal degradation and ammonia oxidation may occur, reducing efficiency.
Common deactivation includes poisoning by sulfur compounds, fouling by particulate matter, thermal sintering at high temperatures, and chemical poisoning from alkali metals or phosphorus.
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