Redispersion of PdOx to Pd ions in Pd/BEA and Pd/ZSM-5 during low-temperature NO adsorption in the presence of H2O and CO

被引：0
|
作者：
Wang, Yingjie [1 ,2 ,3 ]
Shi, Xiaoyan [3 ,4 ]
Wang, Yuxin [3 ,4 ]
Xu, Guangyan [3 ]
Shan, Yulong [3 ]
Yu, Yunbo [3 ,4 ]
He, Hong [3 ,4 ]
机构：
[1] Univ Sci & Technol China, Sch Rare Earths, Hefei 230026, Peoples R China
[2] Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China
[3] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100085, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
APPLIED CATALYSIS A-GENERAL | 2024年 / 672卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Passive NOx adsorber; Pd-based zeolite catalyst; Redispersion of PdOx; H2O and CO; PASSIVE NOX; ADSORBERS; PERFORMANCE; PALLADIUM; CONVERSION; CHEMISTRY; CATALYSTS; ZEOLITES; CATIONS; STORAGE;
D O I：
10.1016/j.apcata.2024.119605
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Pd-based zeolites are promising materials for passive NOx adsorbers (PNA) to remove cold-start NOx emissions. H2O and CO are common components in cold-start exhaust. In this work, Pd/BEA and Pd/ZSM-5 with similar to 1 wt% Pd were prepared to investigate the effect of H2O and CO on the NO uptake at low temperature (120 degrees C). It was found that Pd sites in Pd/ZSM-5 and Pd/BEA can be almost fully utilized as NO adsorption sites by formation of Pd-nitrosyl complexes in the presence of CO and H2O. By combining the results of NO adsorption reactions and in-situ DRIFTS, it was found that the redispersion of PdOx to Pd2+ ions can occur during NOx adsorption in the presence of CO and H2O and NO uptake via formation of Pd-nitrosyl complexes. A mechanism for the improvement of low-temperature NO uptake by Pd/BEA and Pd/ZSM-5 in the presence of CO and H2O was proposed.
引用
收藏
页数：10
相关论文
共 50 条
  • [21] An APXPS Probe of Cu/Pd Bimetallic Catalyst Surface Chemistry of CO2 Toward CO in the Presence of H2O and H2
    Leclerc, Maxime
    Etxebarria, Ane
    Ye, Yifan
    Crumlin, Ethan J.
    Brisard, Gessie M.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2020, 124 (31): : 17085 - 17094
  • [22] Evolution of Pd chemical states and effects of C3H6 and H2O on the CO oxidation over Pd/CeO2 catalyst
    Wang, Mingzhi
    Ma, Peijie
    Wu, Zhuangzhuang
    Chu, Shasha
    Zheng, Yanping
    Zhou, Zhaohui
    Weng, Weizheng
    APPLIED SURFACE SCIENCE, 2022, 599
  • [23] Molecular simulation of hydrodesulfurization of coal tar using Pd/ZSM-5/γ-Al2O3 catalyst
    Chu, Ruizhi
    Wang, Jian
    Meng, Xianliang
    Yu, Shi
    Zhang, Guifeng
    Wang, Minglei
    Li, Xiao
    Wu, Guoguang
    Bai, Lei
    ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, 2019, 14 (03)
  • [24] Accurate hierarchical control of hollow nanocube Pd/CeO2 catalysts for the low-temperature oxidation of CO
    Chen, Weiwei
    Li, Tingting
    Hu, Qian
    Li, Chengping
    Li, Yan
    Guo, Hong
    CATALYSIS COMMUNICATIONS, 2015, 64 : 62 - 65
  • [25] In situ preparation and investigation of Pd/CeO2 catalysts for the low-temperature oxidation of CO
    Gulyaev, R. V.
    Stadnichenko, A. I.
    Slavinskaya, E. M.
    Ivanova, A. S.
    Koscheev, S. V.
    Boronin, A. I.
    APPLIED CATALYSIS A-GENERAL, 2012, 439 : 41 - 50
  • [26] Optimum molar ratio of H2 and H2O to reduce CO2 using Pd/TiO2
    Nishimura, Akira
    Inoue, Tadaki
    Sakakibara, Yoshito
    Hirota, Masafumi
    Koshio, Akira
    Kokai, Fumio
    Hu, Eric
    AIMS MATERIALS SCIENCE, 2019, 6 (04) : 464 - 483
  • [27] Density Functional Calculations on the Adsorption of N2O and H2O on the Ion-exchanged ZSM-5
    Gao, H. W.
    Guo, L.
    Deng, H. H.
    Ge, L. Y.
    Yan, T. X.
    POLISH JOURNAL OF CHEMISTRY, 2009, 83 (06) : 1195 - 1201
  • [28] Thermal activation of Pd/CeO2-SnO2 catalysts for low-temperature CO oxidation
    Slavinskaya, E. M.
    Zadesenets, A., V
    Stonkus, O. A.
    Stadnichenko, A., I
    Shchukarev, A., V
    Shubin, Yu, V
    Korenev, S., V
    Boronin, A., I
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 277
  • [29] High-Temperature Behavior of Laser Electrodispersion-Prepared Pd/ZSM-5 Hydrocarbon Traps under CO Oxidation Conditions
    Rostovshchikova, Tatiana N.
    Shilina, Marina I.
    Maslakov, Konstantin I.
    Gurevich, Sergey A.
    Yavsin, Denis A.
    Veselov, Grigory B.
    Stoyanovskii, Vladimir O.
    Vedyagin, Aleksey A.
    MATERIALS, 2023, 16 (12)
  • [30] Hydrogenation of CO2 to Dimethyl Ether over Tandem Catalysts Based on Biotemplated Hierarchical ZSM-5 and Pd/ZnO
    Li, Wen
    Wang, Kuncan
    Zhan, Guowu
    Huang, Jiale
    Li, Qingbiao
    ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2020, 8 (37) : 14058 - 14070
12345