Hydrogen Selective Catalytic Reduction of Nitrogen Oxide on Pt-and Pd-Based Catalysts for Lean-Burn Automobile Applications
AuthorsAlghamdi, Nawaf M.
Restrepo Cano, Juan
Anjum, Dalaver H.
Im, Hong G.
KAUST DepartmentChemical Engineering
Chemical Engineering Program
Clean Combustion Research Center
Combustion and Pyrolysis Chemistry (CPC) Group
Computational Reacting Flow Laboratory (CRFL)
Imaging and Characterization Core Lab
KAUST Catalysis Center (KCC)
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Embargo End Date2021-03-16
Permanent link to this recordhttp://hdl.handle.net/10754/665824
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AbstractThe utilization of H2 to catalytically treat NO emissions under lean-burn engine exhaust conditions was studied on Pt-and Pd-containing catalysts supported on CeO2 and MgO. The catalytic performance was examined using a fixed-bed reactor whose dry effluent gas stream was analyzed by an online FTIR analyzer. The catalysts NO conversion and N2 selectivity were measured in the range of 125-3000C with a feed gas composition of 0.05%NO/1%H2/10%O2/N2. The CeO2-based catalysts exhibited higher NO conversion, and the most effective catalyst was Pd/CeO2, with a conversion of 67% and selectivity of 70% near 2300C. The prepared solids were characterized using different techniques (BET, ICP-OES, CO pulse chemisorption, STEM, EELS and EDS) to correlate the structural and morphological properties of the metallic phase and the support with the catalytic activity. CeO2 is a more effective support as it yields higher metal dispersion and better facilitates the reduction of the Pt and Pd catalysts.
CitationAlghamdi, N. M., Restrepo Cano, J., Anjum, D. H., Im, H. G., Kalamaras, C., Gascon, J., & Sarathy, S. M. (2020). Hydrogen Selective Catalytic Reduction of Nitrogen Oxide on Pt- and Pd-Based Catalysts for Lean-Burn Automobile Applications. SAE Technical Paper Series. doi:10.4271/2020-01-2173
Conference/Event nameSAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020