Zeolite-promoted platinum catalyst for efficient reduction of nitrogen oxides with hydrogen

Shaohua Xie, Liping Liu, Yuejin Li, Kailong Ye, Daekun Kim, Xing Zhang, Hongliang Xin (), Lu Ma, Steven N. Ehrlich and Fudong Liu ()
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Shaohua Xie: Center for Environmental Research and Technology (CE-CERT), Materials Science and Engineering (MSE) Program, University of California
Liping Liu: Virginia Polytechnic Institute and State University
Yuejin Li: BASF Environmental Catalyst and Metal Solutions
Kailong Ye: Center for Environmental Research and Technology (CE-CERT), Materials Science and Engineering (MSE) Program, University of California
Daekun Kim: Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida
Xing Zhang: Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida
Hongliang Xin: Virginia Polytechnic Institute and State University
Lu Ma: Brookhaven National Laboratory, Upton
Steven N. Ehrlich: Brookhaven National Laboratory, Upton
Fudong Liu: Center for Environmental Research and Technology (CE-CERT), Materials Science and Engineering (MSE) Program, University of California

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Internal combustion engine fueled by carbon-free hydrogen (H2-ICE) offers a promising alternative for sustainable transportation. Herein, we report a facile and universal strategy through the physical mixing of Pt catalyst with zeolites to significantly improve the catalytic performance in the selective catalytic reduction of nitrogen oxides (NOx) with H2 (H2-SCR), a process aiming at NOx removal from H2-ICE. Via the physical mixing of Pt/TiO2 with Y zeolite (Pt/TiO2 + Y), a remarkable enhancement of NOx reduction activity and N2 selectivity was simultaneously achieved. The incorporation of Y zeolite effectively captured the in-situ generated water, fostering a water-rich environment surrounding the Pt active sites. This environment weakened the NO adsorption while concurrently promoting the H2 activation, leading to the strikingly elevated H2-SCR activity and N2 selectivity on Pt/TiO2 + Y catalyst. This study provides a unique, easy and sustainable physical mixing approach to achieve proficient heterogeneous catalysis for environmental applications.

Date: 2024
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DOI: 10.1038/s41467-024-52382-7

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