Experimental Investigation on Iron Oxide Catalyst Supported by 2D Functionalized Boron for Selective Catalytic Reduction in Aviation

Selective Catalytic Reduction (SCR) is a reliable and well-used method for reducing or even completely eliminating NOx emissions from exhaust in the transportation and power generation industries. As efforts continue to reduce the growing number of emissions produced from the aviation sector, SCR may be a potential pathway for reducing NOx emissions. Iron based catalysts are well researched for SCR applications, showing traits that can be useful to combat the intricate design parameters in aircraft engines. 2D-functionalized boron has not been tested as a support for iron-based catalysts in SCR applications, but is known to crack ammonia when supporting iron oxide. While using ammonia as the reducing agent, hydrogen may be created from cracked ammonia, allowing both ammonia and hydrogen SCR to occur while only using ammonia as the reducing agent. This may promote further NOx conversion by having two SCR reactions occurring and reduce ammonia slip by cracking unused ammonia. This experiment investigates this catalyst at steady state conditions to discover if both ammonia and hydrogen SCR are occurring simultaneously and what conversions may be found at cruise conditions of a commercial aircraft engine.