High-temperature exhaust environments cause structural collapse and loss of active sites in zeolite frameworks. Preventing this degradation ensures consistent emission control over the vehicle lifetime.

Zeolite catalysts used in NOx reduction suffer from structural collapse and active site loss under high-temperature steam conditions. Preventing this degradation ensures long-term catalytic efficiency in exhaust environments.

Loss of active surface area and chemical poisoning in iron oxide and honeycomb structures. Preventing degradation maintains reaction efficiency and catalyst longevity.