Session: 01-06 Alternative Fuels in Whole Engine Performance

Paper Number: 151240

Experimental Investigation on Supported Iron Catalyst for High Temperature NH3-SCR of NOx in Regard to Aviation 

While much of the focus on emissions control is towards Carbon emissions to achieve net-zero carbon emissions by 2050 set by the International Civil Aviation Organization. NOx emissions have a global warming potential 273 times greater than the GWP of carbon dioxide on a 100-year timescale. Selective Catalytic Reduction (SCR) has been an effective way to reduce or even completely eliminate NOx emissions in the transportation and turbine industry for the better part of two decades. The use of ammonia as a hydrogen carrier for air travel is one of the pathways being considered to achieve net-zero carbon emissions. With ammonia already on board, a small amount could be allocated to an SCR system to aim for not only zero carbon emissions but also zero NOx emissions as well. Notional Jet Engines have the unique challenge of a large flowrate in the core exhaust flowing through a small volume that is available to integrate an SCR system. With this, little experimental research has been done to see the effectiveness of catalysts within the pressure and temperature ranges found in these jet exhausts at cruise conditions. Iron catalysts have been found to be one of the more effective NH3-SCR catalysts at higher Gas Hourly Space Velocities (GHSV) and have a wide temperature range. This paper investigates the NOx conversion efficiency of supported iron catalysts at typical jet engine conditions found at cruise with ammonia-hydrogen as the fuel. Promising results could lead to an effective way to eliminate NOx emissions from current and future notional jet engines.

Presenting Author: Connor Wall University of Central Florida

Presenting Author Biography: Connor Wall is a research assistant at the Center for Advanced Turbomachinery and Energy Research at the University of Central Florida Currently pursuing an M.S. in Mechanical Engineering with a Thermofluids track. His work in studying Selective Catalytic Reduction and the potential integration into the aviation field encompasses his primary goal of working on sustainability efforts, specifically in the aviation industry.

Authors:

Connor Wall University of Central Florida
Saqib Shahzad University of Central Florida
Erik Fernandez University of Central Florida
Matthew Dearolph University of Central Florida
Marcel Otto University of Central Florida
Richard Blair University of Central Florida
Jayanta Kapat University of Central Florida