La-Doped MnNiOx SCR Catalyst

SO₂-tolerant & low-temp

Preferential SO₂ adsorption on La-MnNiO₃ protective sites prevents sulfation of MnOx active sites, enabling stable low-temperature SCR.

Zhengyan, Zhu · Hao, Shen · Shen, Yongjie · Han, Lupeng · Wang, Fuli · Qu, Wenqiang · Runfang, Mao · Pan, Zhang · Li, Minjie · Zhang, Dengsong

Applied Catalysis A: General 2026

Specifications

Catalyst composition

{'zh': 'Mn0.63La0.05Ni0.32Ox', 'en': 'Mn0.63La0.05Ni0.32Ox'}

Advantages

SO₂-tolerant

La-MnNiO₃ sites preferentially adsorb SO₂ to form sulfate species, protecting MnOx active sites from sulfation and maintaining high NOx removal in the presence of SO₂.

ML-accelerated discovery

An SVR model with feature selection enables high-throughput virtual screening, reducing reliance on trial-and-error experimentation.

Excellent low-T activity

The synthesized Mn0.63La0.05Ni0.32Ox shows excellent low-temperature NH₃-SCR activity.

Applications

• Low-temperature SCR catalysts：Enables low-temperature NOx removal without sulfation deactivation.
• Flue gas denitrification：Maintains stable NOx removal in SO₂-containing flue gas.
• Industrial exhaust treatment：Provides SO₂-tolerant catalyst for low-temperature NOx abatement in industrial exhaust.
• Diesel emission control：Suitable for diesel emission aftertreatment, working efficiently at low temperatures with sulfur resistance.