CeO₂-TiO₂ Catalysts

Pore-Size-Tuned Multi-Pollutant Adsorption

Optimized pore size enhances NH₃ adsorption and mitigates H₂O/SO₂ inhibition in NH₃-SCR.

Xinyi, Qi · Zhang, Guomeng · Xiang, Zhang · Xiao, Dou · Yang, Yang · Jiang, Ye · Yang, Zhengda

Fuel 2027

Specifications

NH₃ maximum adsorption capacity increase

{'zh': '247', 'en': '247'} %

Advantages

Adsorption up 247%

Increasing pore diameter from 2.5 nm to 7.5 nm boosts NH₃ maximum adsorption capacity by 247% at 673 K.

Mitigates H₂O/SO₂ inhibition

Increasing slit width effectively alleviates the inhibitory effect of H₂O and SO₂ on NH₃ adsorption, thereby enhancing the effective adsorption rate of NH₃.

Suppresses water adsorption

A larger slit width reduces the competitive adsorption of NH₃ and H₂O at high temperatures and decreases the amount of water present as surface hydroxyl groups.

Applications

• NH₃-SCR Catalysts：Optimize pore size to enhance NH₃ adsorption for SCR denitrification.
• Multi-Pollutant Adsorbents：Simultaneously adsorb NH₃, H₂O, and SO₂ for synergistic multi-pollutant removal.
• Exhaust Gas Treatment：Used to purify NOx and SO₂ in diesel or industrial exhaust.
• Ceria-Titania Mixed Oxides：Use CeO₂-TiO₂ as support and tune pores to strengthen gas adsorption.