Efficient NOx abatement by passive adsorption over SSZ-16 zeolite supported palladium

IF 5.2 2区化学 Q1 CHEMISTRY, APPLIED

Catalysis Today Pub Date : 2025-04-02 DOI:10.1016/j.cattod.2025.115314

Yaqi Lai , Xin Chen , Jian Li , Wenfu Yan , Xiangju Meng , Fan Yang , Feng-Shou Xiao

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引用次数: 0

Abstract

Passive NO_x adsorption (PNA) has been considered as an effective route for NO_x abatement in heavy diesel vehicles (HDV) emission-control during cold-start period. Recently, Pd species supported on zeolites with small-pores (e.g. LTA, CHA, and AEI zeolite structures) have been reported as candidates for PNA adsorbents. However, SSZ-16 zeolite supported Pd in PNA was seldom investigated. In this work, it was reported a preparation of Pd species supported on SSZ-16 zeolite with AFX structure (Pd/SSZ-16). PNA tests showed that the Pd/SSZ-16 with 1 % Pd loading exhibited a high NO storage capacity (70.7 μmol NO/g catalyst) with NPR (mol _NO/mol _Pd ratio) of 0.69. After hydrothermal treatment at 750 °C for 16 h with 10 % H₂O, the NO storage capacity still remained NSA and NPR at 48.5 μmol/g and 0.47, which were comparable with those of the state-of-art PNA adsorbents associated with small pore zeolite supported Pd reported previously.

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来源期刊

Catalysis Today 化学-工程：化工

CiteScore

11.50

自引率

3.80%

发文量

573

审稿时长

2.9 months

期刊介绍： Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues. Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.