Pdni catalyst for catalytic reduction of nitrogen oxides (NOX) in the presence of hydrogen
A palladium-nickel catalyst on titanium dioxide with controlled nanoparticle sizes addresses the limitations of H2-SCR by achieving efficient NOx conversion at low temperatures and minimizing N2O emissions, extending the operational range and facilitating ammonia-based NOx reduction.
WO2026125015A1PCT designated stage Publication Date: 2026-06-18IFP ENERGIES NOUVELLES
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- IFP ENERGIES NOUVELLES
- Filing Date
- 2025-11-27
- Publication Date
- 2026-06-18
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Abstract
The present invention relates to a catalyst for catalytic reduction of nitrogen oxides in the presence of hydrogen (H2-SCR) comprising an active phase comprising palladium and nickel, and a support comprising titanium dioxide, the palladium content being between 0.001 and 8% by weight of palladium element, the nickel content being between 1 and 20% by weight of nickel element based on the total weight of the catalyst, characterised in that: - the number-average diameter of the palladium particles is between 0.5 and 5 nm; and - the nickel particles are distributed across two distinct populations: a first population of particles having a number-average diameter between 2.5 and 6 nm, and a second population of particles having a number-average diameter between 7 and 12 nm.
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