Ruthenium-Based Catalyst in EGR Leg of a D-EGR Engine Offers Combustion Improvements Through Selective NO <sub>X</sub> Removal

2016-01-0952

04/05/2016

Event
SAE 2016 World Congress and Exhibition
Authors Abstract
Content
A recent collaborative research project between Southwest Research Institute® (SwRI®) and the University of Texas at San Antonio (UTSA) has demonstrated that a ruthenium (Ru) catalyst is capable of converting oxides of nitrogen (NOX) emissions to nitrogen (N2) with high activity and selectivity. Testing was performed on coated cordierite ceramic cores using SwRI’s Universal Synthetic Gas Reactor® (USGR®). Various gas mixtures were employed, from model gas mixes to full exhaust simulant gas mixes. Activity was measured as a function of temperature, and gaseous inhibitors and promoters were identified. Different Ru supports were tested to identify ones with lowest temperature activity. A Ru catalyst can be used in the exhaust gas recirculation (EGR) leg of a Dedicated-EGR (D-EGR) engine [1,2], where it uses carbon monoxide (CO) and hydrogen (H2) present in the rich gas environment to reduce NOX to N2 with 100% efficiency and close to 100% selectivity to N2. The NOX-free EGR gases can then be fed into the intake air without concerns that the NOX will lead to pre-ignition under high engine efficiency operating conditions. This catalysis may find application in other rich-burn and reducing gas mixture environments.
Meta TagsDetails
DOI
https://doi.org/10.4271/2016-01-0952
Pages
7
Citation
Bartley, G., Tonzetich, Z., and Hartley, R., "Ruthenium-Based Catalyst in EGR Leg of a D-EGR Engine Offers Combustion Improvements Through Selective NO X Removal," SAE Technical Paper 2016-01-0952, 2016, https://doi.org/10.4271/2016-01-0952.
Additional Details
Publisher
Published
Apr 5, 2016
Product Code
2016-01-0952
Content Type
Technical Paper
Language
English