Abstract
This UCF invention introduces a new family of N2O decomposition catalysts based on rhodium supported on ceria and modified with light rare earth element oxides. Put simply, this technology targets one of the hardest-to-remove greenhouse gases using a catalyst that actually works under real-world conditions where others fail. These catalysts demonstrate significantly enhanced activity compared to state-of-the-art Rh/CeO2 systems under oxygen and water-rich conditions found in automotive exhaust, enabling efficient decomposition of N2O into N2 and O2 without disrupting other emission control functions.
Technical Details: The catalyst uses a small amount of rhodium (~0.5 wt%) on a ceria support, with added light rare earth oxides such as Pr, Nd, Sm, or Gd to improve performance. These additives sit on the surface of the catalyst and boost how effectively it breaks down N2O, even when oxygen and water are present. In testing, optimized formulations showed up to about twice the N2O conversion of standard Rh/CeO2 catalysts at temperatures relevant to vehicle exhaust, while maintaining stability after high-temperature aging.
Benefit
Higher performance: delivers up to ~2x improvement in N2O conversion compared to conventional catalysts.Real-world durability: maintains activity in exhaust streams containing oxygen and water.Drop-in compatibility: integrates into existing emission control systems without major redesign.Environmental impact: enables reduction of N2O, a highly potent greenhouse gas.Market Application
Automotive emissions control: three-way catalysts, diesel aftertreatment systems, and lean NOx traps.Industrial emissions treatment: catalysts for nitric acid and adipic acid plants to reduce N2O emissions.Catalyst manufacturing: new product formulations by companies like BASF, Johnson Matthey, and Umicore.Environmental compliance solutions: technologies for reducing greenhouse gas emissions in regulated industries.
Brochure
