Dual‐Active‐Sites in Co‐Doped Pd/Beta Catalyst for Robust Soot Oxidation
Source abstract
Abstract
Abstract The development of robust catalysts for soot oxidation is crucial for the emission control of diesel vehicles. Herein, a 0.5%Pd‐1%Co/Beta catalyst with extraordinary soot oxidation activity is developed by doping Co into 0.5%Pd/Beta. Remarkably, doping with Co reduced the T50 of 0.5%Pd/Beta by 69 °C, surpassing even the activity of 1%Pd/Beta. Experiments and DFT (density functional theory) calculations identified that Co doping induces the formation of dual‐active‐sites in the Pd‐Co/Beta catalyst (Pdδ+ (0 < δ < 2) species and oxygen defects), which are beneficial for the adsorption/activation of reactants (O2 and NO) and dissociation of the intermediate (NO2), ultimately leading to more NO2 participating in soot oxidation. This study presents a strategy to enhance the soot oxidation activity of noble metal catalysts while simultaneously reducing the amount of noble metal used. The developed 0.5%Pd‐1%Co/Beta catalyst is a promising candidate for soot control on diesel vehicles.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Electrocatalysts for Energy Conversion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Advanced Environmental Technology Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China
Zhejiang Key Laboratory of Pollution Control for Port‐Petrochemical Industry Ningbo Urban Environment Observation and Research Station Institute of Urban Environment Chinese Academy of Sciences Ningbo 315800 China
University of Chinese Academy of Sciences Beijing 100049 China
State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco‐Environmental Sciences Chinese Academy of Sciences Beijing 100085 China
Funding
National Natural Science Foundation of China · National Key Research and Development Program of China · Youth Innovation Promotion Association of the Chinese Academy of Sciences
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