SSZ-13 has rich surface acidity, which is often used to catalyze the conversion of alcohols and selectively generate low-carbon olefins, such as methanol to low-carbon olefins (MTO), ethanol to ethylene, etc. Cu / SSZ-13 has good catalytic performance in catalytic oxidation-reduction reaction, with more excellent low-temperature catalytic activity, hydrothermal stability and anti-aging performance. It is commonly used to remove NOx from automobile exhaust by SCR method.