Breakthrough in Denitration Catalyst Technology: Tsinghua University Team Develops Novel Alkali Metal-Resistant Catalyst (January 2024)

Key Technical Breakthroughs

1. Novel Vanadium-Tungsten-Titanium Catalyst:
   Utilizing atomic-level dispersion technology, a CeO₂ modification layer was introduced into the conventional V₂O₅-WO₃/TiO₂ system. This innovation enhances the catalyst’s resistance to K⁺/Na⁺ poisoning by more than threefold at 350°C.

2. Industrial Validation Data:
   During a 2,000-hour pilot test at a waste incineration plant, the new catalyst maintained over 82% denitration efficiency even in flue gas with alkali metal content as high as 5 wt%.

3. Mechanism Study:
   Synchrotron radiation characterization confirmed that the CeO₂ modification layer preferentially adsorbs alkali metals, shielding the active sites from deactivation.

Industry Impact
The Denitration Expert Group of the China Association of Environmental Protection Industry highlighted that this technology offers a breakthrough solution for challenging operational environments such as high-alkali coal combustion and biomass power generation. Industrial mass production testing is planned for 2024. If successfully scaled, the technology could extend catalyst replacement cycles by over 30%.

Policy Context
With the release of the Ministry of Ecology and Environment’s 2025 Nitrogen Oxide Reduction Work Plan (draft for comments), stricter denitration efficiency requirements for non-power industries have been proposed. The development of poisoning-resistant catalysts is now a key priority for the industry.