Home

Citation: Li Xin-Gang, Meng Ming, Lin Pei-Yan, Huang Zhi-Jian, Fu Yi-Lu, Xie Ya-Ning, Hu Tian-Dou. The Study of XAFS for the NOx Storage Catalyst Pt/BaAl₂O₄-Al₂O₃[J]. Acta Physico-Chimica Sinica doi: 10.3866/PKU.WHXB20011204 shu

The Study of XAFS for the NOx Storage Catalyst Pt/BaAl₂O₄-Al₂O₃

1.
Department of Chemical Physics, University of Science and Technology of China, Hefei　230026;Synchrotron Radiation Laboratory, Institute of High Energy Physics, Beijing　100039

Received Date: 16 April 2001
Available Online: 15 December 2001

A series of Pt/BaAl2O4-Al2O3 NOx trap samples were prepared by coprecipitation-impregnation method. The supports BaAl2O4-Al2O3 were calcined at 800 ℃ and 1000 ℃, respectively. X-ray Diffraction(XRD), X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure(EXAFS) were used to characterize the microcosmic structure of barium and platinum species in the samples. It is shown that the barium exists in the forms of BaAl2O4 and BaCO3 crystallites. With the decreasing of calcination temperature and barium content, the dispersion of BaAl2O4 phase becomes higher. Platinum in the samples mainly exists as small atomic clusters, which possess very high dispersion. In comparison with the standard compound of platinum, the magnitude for Pt－Pt coordination shell is significantly decreased, and the coordination distance is also shortened about 0.01 nm. All the results suggest that the BaAl2O4 crystallites should be the centers for NOx storage, while the fine-grained platinum species with high dispersion are deduced as the centers for the capture and oxidation of NOx species.
- NO_x;Pt/BaAl₂O₄-Al₂O₃;Storage;XAFS
1. [1]
  Shanyuan Bi , Jin Zhang , Dengchao Peng , Danhong Cheng , Jianping Zhang , Lupeng Han , Dengsong Zhang . Improved N₂ selectivity for low-temperature NO_x reduction over etched ZSM-5 supported MnCe oxide catalysts. Chinese Chemical Letters, doi: 10.1016/j.cclet.2024.110295
2. [2]
  Yang Li , Xiaoxu Liu , Tianyi Ji , Man Zhang , Xueru Yan , Mengjie Yao , Dawei Sheng , Shaodong Li , Peipei Ren , Zexiang Shen . Potassium ion doped manganese oxide nanoscrolls enhanced the performance of aqueous zinc-ion batteries. Chinese Chemical Letters, doi: 10.1016/j.cclet.2024.109551
3. [3]
  Shuangxi Li , Huijun Yu , Tianwei Lan , Liyi Shi , Danhong Cheng , Lupeng Han , Dengsong Zhang . NO_x reduction against alkali poisoning over Ce(SO₄)₂-V₂O₅/TiO₂ catalysts by constructing the Ce⁴⁺–SO₄²⁻ pair sites. Chinese Chemical Letters, doi: 10.1016/j.cclet.2023.108240
4. [4]
  Lijun Yan , Shiqi Chen , Penglu Wang , Xiangyu Liu , Lupeng Han , Tingting Yan , Yuejin Li , Dengsong Zhang . Hydrothermally stable metal oxide-zeolite composite catalysts for low-temperature NO_x reduction with improved N₂ selectivity. Chinese Chemical Letters, doi: 10.1016/j.cclet.2023.109132
5. [5]
  Zhuo Wang , Xue Bai , Kexin Zhang , Hongzhi Wang , Jiabao Dong , Yuan Gao , Bin Zhao . MOF模板法合成氮掺杂碳材料用于增强电化学钠离子储存和去除. Acta Physico-Chimica Sinica, doi: 10.3866/PKU.WHXB202405002
6. [6]
  Liuyun Chen , Wenju Wang , Tairong Lu , Xuan Luo , Xinling Xie , Kelin Huang , Shanli Qin , Tongming Su , Zuzeng Qin , Hongbing Ji . Soft template-induced deep pore structure of Cu/Al₂O₃ for promoting plasma-catalyzed CO₂ hydrogenation to DME. Acta Physico-Chimica Sinica, doi: 10.1016/j.actphy.2025.100054
7. [7]
  Shiyi WANG , Chaolong CHEN , Xiangjian KONG , Lansun ZHENG , Lasheng LONG . Polynuclear lanthanide compound [Ce₄^ⅢCe₆^Ⅳ(μ₃-O)₄(μ₄-O)₄(acac)₁₄(CH₃O)₆]·2CH₃OH for the hydroboration of amides to amine. Chinese Journal of Inorganic Chemistry, doi: 10.11862/CJIC.20240342
8. [8]
  Linhui Liu , Wuwan Xiong , Mingli Fu , Junliang Wu , Zhenguo Li , Daiqi Ye , Peirong Chen . Efficient NO_x abatement by passive adsorption over a Pd-SAPO-34 catalyst prepared by solid-state ion exchange. Chinese Chemical Letters, doi: 10.1016/j.cclet.2023.108870
9. [9]
  Dong-Xue Jiao , Hui-Li Zhang , Chao He , Si-Yu Chen , Ke Wang , Xiao-Han Zhang , Li Wei , Qi Wei . Layered (C5H6ON)2[Sb2O(C2O4)3] with a large birefringence derived from the uniform arrangement of π-conjugated units. Chinese Journal of Structural Chemistry, doi: 10.1016/j.cjsc.2024.100304
10. [10]
  Fei ZHOU , Xiaolin JIA . Co₃O₄/TiO₂ composite photocatalyst: Preparation and synergistic degradation performance of toluene. Chinese Journal of Inorganic Chemistry, doi: 10.11862/CJIC.20240236
11. [11]
  Xiuzheng Deng , Changhai Liu , Xiaotong Yan , Jingshan Fan , Qian Liang , Zhongyu Li . Carbon dots anchored NiAl-LDH@In₂O₃ hierarchical nanotubes for promoting selective CO₂ photoreduction into CH₄. Chinese Chemical Letters, doi: 10.1016/j.cclet.2023.108942
12. [12]
  Lina Guo , Ruizhe Li , Chuang Sun , Xiaoli Luo , Yiqiu Shi , Hong Yuan , Shuxin Ouyang , Tierui Zhang . 层状双金属氢氧化物的层间阴离子对衍生的Ni-Al₂O₃催化剂光热催化CO₂甲烷化反应的影响. Acta Physico-Chimica Sinica, doi: 10.3866/PKU.WHXB202309002
13. [13]
  Hongyi LI , Aimin WU , Liuyang ZHAO , Xinpeng LIU , Fengqin CHEN , Aikui LI , Hao HUANG . Effect of Y(PO₃)₃ double-coating modification on the electrochemical properties of Li[Ni_0.8Co_0.15Al_0.05]O₂. Chinese Journal of Inorganic Chemistry, doi: 10.11862/CJIC.20230480
14. [14]
  Tong Zhou , Xue Liu , Liang Zhao , Mingtao Qiao , Wanying Lei . Efficient Photocatalytic H₂O₂ Production and Cr(VI) Reduction over a Hierarchical Ti₃C₂/In₄SnS₈ Schottky Junction. Acta Physico-Chimica Sinica, doi: 10.3866/PKU.WHXB202309020
15. [15]
  Juan Guo , Mingyuan Fang , Qingsong Liu , Xiao Ren , Yongqiang Qiao , Mingju Chao , Erjun Liang , Qilong Gao . Zero thermal expansion in Cs₂W₃O₁₀. Chinese Chemical Letters, doi: 10.1016/j.cclet.2023.108957
16. [16]
  Renshu Huang , Jinli Chen , Xingfa Chen , Tianqi Yu , Huyi Yu , Kaien Li , Bin Li , Shibin Yin . Synergized oxygen vacancies with Mn2O3@CeO2 heterojunction as high current density catalysts for Li–O2 batteries. Chinese Journal of Structural Chemistry, doi: 10.1016/j.cjsc.2023.100171
17. [17]
  Wei Zhong , Dan Zheng , Yuanxin Ou , Aiyun Meng , Yaorong Su . K原子掺杂高度面间结晶的g-C₃N₄光催化剂及其高效H₂O₂光合成. Acta Physico-Chimica Sinica, doi: 10.3866/PKU.WHXB202406005
18. [18]
  Guoqiang Chen , Zixuan Zheng , Wei Zhong , Guohong Wang , Xinhe Wu . 熔融中间体运输导向合成富氨基g-C₃N₄纳米片用于高效光催化产H₂O₂. Acta Physico-Chimica Sinica, doi: 10.3866/PKU.WHXB202406021
19. [19]
  Hualin Jiang , Wenxi Ye , Huitao Zhen , Xubiao Luo , Vyacheslav Fominski , Long Ye , Pinghua Chen . Novel 3D-on-2D g-C₃N₄/AgI._x._y heterojunction photocatalyst for simultaneous and stoichiometric production of H₂ and H₂O₂ from water splitting under visible light. Chinese Chemical Letters, doi: 10.1016/j.cclet.2024.109984
20. [20]
  Lina Wang , Hairu Wang , Qian Bu , Qiong Mei , Junbo Zhong , Bo Bai , Qizhao Wang . Al-O bridged NiFeO_x/BiVO₄ photoanode for exceptional photoelectrochemical water splitting. Chinese Chemical Letters, doi: 10.1016/j.cclet.2024.110139

Get Citation

PDF

XML

Metrics

PDF Downloads(2834)
Abstract views(3318)
HTML views(31)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return

The Study of XAFS for the NOx Storage Catalyst Pt/BaAl2O4-Al2O3

Metrics

通讯作者: 陈斌, bchen63@163.com

The Study of XAFS for the NOx Storage Catalyst Pt/BaAl₂O₄-Al₂O₃