Home

Citation: Chen Hong-Shan, Niu Jian-Zhong, Zhang Bing, Li Shu-Ben. DFT Study on the Active Sites in Mn-Na₂WO₄/SiO₂ Catalyst[J]. Acta Physico-Chimica Sinica, ;2001, 17(02): 111-115. doi: 10.3866/PKU.WHXB20010204 shu

DFT Study on the Active Sites in Mn-Na₂WO₄/SiO₂ Catalyst

1.
Department of Physics ,Northwest Normal University,Lanzhou　730070; State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Lanzhou　730000

Received Date: 9 May 2000
Available Online: 15 February 2001

MnNa2WO4/SiO2 is one of the best catalysts for oxidative coupling of methane.To investigate the nature of active centers and the reaction mechanism,the structure of possible metal sites formed by tungsten and manganese over the silica surface were studied using molecular simulation method and ab initio DFT calculations.Silica support exists in the catalyst as 岐瞔ristobalite and its (111) face exposes preferentially to the surface.The calculated results show that tungsten interacts with the silica surface by three or one bridge oxygen atoms to form tetrahedral [WO4],and manganese interacts with single bridge oxygen to form dispersed [MnO4] or exists as oxide clusters.The nature of the molecular orbitals and the electronic structure suggest that the tetrahedral [WO4] site with single bridge oxygen is the most probable active center responsible for methane activation.
- Mn-Na₂WO₄/SiO₂;Active sites;DFT
1. [1]
  Tsegaye Tadesse Tsega , Jiantao Zai , Chin Wei Lai , Xin-Hao Li , Xuefeng Qian . Earth-abundant CuFeS2 nanocrystals@graphite felt electrode for high performance aqueous polysulfide/iodide redox flow batteries. Chinese Journal of Structural Chemistry, 2024, 43(1): 100192-100192. doi: 10.1016/j.cjsc.2023.100192
2. [2]
  Chunyan Yang , Qiuyu Rong , Fengyin Shi , Menghan Cao , Guie Li , Yanjun Xin , Wen Zhang , Guangshan Zhang . Rationally designed S-scheme heterojunction of BiOCl/g-C₃N₄ for photodegradation of sulfamerazine: Mechanism insights, degradation pathways and DFT calculation. Chinese Chemical Letters, 2024, 35(12): 109767-. doi: 10.1016/j.cclet.2024.109767
3. [3]
  Zhengyu Zhou , Huiqin Yao , Youlin Wu , Teng Li , Noritatsu Tsubaki , Zhiliang Jin . Synergistic Effect of Cu-Graphdiyne/Transition Bimetallic Tungstate Formed S-Scheme Heterojunction for Enhanced Photocatalytic Hydrogen Evolution. Acta Physico-Chimica Sinica, 2024, 40(10): 2312010-. doi: 10.3866/PKU.WHXB202312010
4. [4]
  Chaozheng He , Jia Wang , Ling Fu , Wei Wei . Nitric oxide assists nitrogen reduction reaction on 2D MBene: A theoretical study. Chinese Chemical Letters, 2024, 35(5): 109037-. doi: 10.1016/j.cclet.2023.109037
5. [5]
  Ting-Ting Huang , Jin-Fa Chen , Juan Liu , Tai-Bao Wei , Hong Yao , Bingbing Shi , Qi Lin . A novel fused bi-macrocyclic host for sensitive detection of Cr₂O₇²⁻ based on enrichment effect. Chinese Chemical Letters, 2024, 35(7): 109281-. doi: 10.1016/j.cclet.2023.109281
6. [6]
  Sanmei Wang , Yong Zhou , Hengxin Fang , Chunyang Nie , Chang Q Sun , Biao Wang . Constant-potential simulation of electrocatalytic N₂ reduction over atomic metal-N-graphene catalysts. Chinese Chemical Letters, 2025, 36(3): 110476-. doi: 10.1016/j.cclet.2024.110476
7. [7]
  Sanmei Wang , Dengxin Yan , Wenhua Zhang , Liangbing Wang . Graphene-supported isolated platinum atoms and platinum dimers for CO₂ hydrogenation: Catalytic activity and selectivity variations. Chinese Chemical Letters, 2025, 36(4): 110611-. doi: 10.1016/j.cclet.2024.110611
8. [8]
  Run-Han Li , Tian-Yi Dang , Wei Guan , Jiang Liu , Ya-Qian Lan , Zhong-Min Su . Evolution exploration and structure prediction of Keggin-type group IVB metal-oxo clusters. Chinese Chemical Letters, 2024, 35(5): 108805-. doi: 10.1016/j.cclet.2023.108805
9. [9]
  Chen Chen , Jinzhou Zheng , Chaoqin Chu , Qinkun Xiao , Chaozheng He , Xi Fu . An effective method for generating crystal structures based on the variational autoencoder and the diffusion model. Chinese Chemical Letters, 2025, 36(4): 109739-. doi: 10.1016/j.cclet.2024.109739
10. [10]
  Quanliang Chen , Zhaohui Zhou . Research on the Active Site of Nitrogenase over Fifty Years. University Chemistry, 2024, 39(7): 287-293. doi: 10.3866/PKU.DXHX202310133
11. [11]
  Yiwen Xu , Chaozheng He , Chenxu Zhao , Ling Fu . Single-atom Ti doping on S-vacancy two-dimensional CrS₂ as a catalyst for ammonia synthesis: A DFT study. Chinese Chemical Letters, 2025, 36(4): 109797-. doi: 10.1016/j.cclet.2024.109797
12. [12]
  Yukai Jiang , Yihan Wang , Yunkai Zhang , Yunping Wei , Ying Ma , Na Du . Characterization and Phase Diagram of Surfactant Lyotropic Liquid Crystal. University Chemistry, 2024, 39(4): 114-118. doi: 10.3866/PKU.DXHX202309033
13. [13]
  Congying Lu , Fei Zhong , Zhenyu Yuan , Shuaibing Li , Jiayao Li , Jiewen Liu , Xianyang Hu , Liqun Sun , Rui Li , Meijuan Hu . Experimental Improvement of Surfactant Interface Chemistry: An Integrated Design for the Fusion of Experiment and Simulation. University Chemistry, 2024, 39(3): 283-293. doi: 10.3866/PKU.DXHX202308097
14. [14]
  Dan-Ying Xing , Xiao-Dan Zhao , Chuan-Shu He , Bo Lai . Kinetic study and DFT calculation on the tetracycline abatement by peracetic acid. Chinese Chemical Letters, 2024, 35(9): 109436-. doi: 10.1016/j.cclet.2023.109436
15. [15]
  Xin-Tong Zhao , Jin-Zhi Guo , Wen-Liang Li , Jing-Ping Zhang , Xing-Long Wu . Two-dimensional conjugated coordination polymer monolayer as anode material for lithium-ion batteries: A DFT study. Chinese Chemical Letters, 2024, 35(6): 108715-. doi: 10.1016/j.cclet.2023.108715
16. [16]
  Yifeng TAN , Ping CAO , Kai MA , Jingtong LI , Yuheng WANG . Synthesis of pentaerythritol tetra(2-ethylthylhexoate) catalyzed by h-MoO₃/SiO₂. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2155-2162. doi: 10.11862/CJIC.20240147
17. [17]
  Guang-Xu Duan , Queting Chen , Rui-Rui Shao , Hui-Huang Sun , Tong Yuan , Dong-Hao Zhang . Encapsulating lipase on the surface of magnetic ZIF-8 nanosphers with mesoporous SiO₂ nano-membrane for enhancing catalytic performance. Chinese Chemical Letters, 2025, 36(2): 109751-. doi: 10.1016/j.cclet.2024.109751
18. [18]
  Dai-Huo Liu , Ao Wang , Hong-Yan Lü , Xing-Long Wu , Dan Luo , Wen-Hao Li , Jin-Zhi Guo , Haozhen Dou , Qianyi Ma , Zhongwei Chen . In situ constructing (MnS/Mn₂SnS₄)@N,S-ACTs heterostructure with superior Na/Li-storage capabilities in half-cells and pouch full-cells. Chinese Chemical Letters, 2024, 35(11): 109285-. doi: 10.1016/j.cclet.2023.109285
19. [19]
  Tao Ban , Xi-Yang Yu , Hai-Kuo Tian , Zheng-Qing Huang , Chun-Ran Chang . One-step conversion of methane and formaldehyde to ethanol over SA-FLP dual-active-site catalysts: A DFT study. Chinese Chemical Letters, 2024, 35(4): 108549-. doi: 10.1016/j.cclet.2023.108549
20. [20]
  Xinpin Pan , Yongjian Cui , Zhe Wang , Bowen Li , Hailong Wang , Jian Hao , Feng Li , Jing Li . Robust chemo-mechanical stability of additives-free SiO₂ anode realized by honeycomb nanolattice for high performance Li-ion batteries. Chinese Chemical Letters, 2024, 35(10): 109567-. doi: 10.1016/j.cclet.2024.109567

Get Citation

PDF

XML

Metrics

PDF Downloads(2926)
Abstract views(3208)
HTML views(11)

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

DFT Study on the Active Sites in Mn-Na2WO4/SiO2 Catalyst

Metrics

通讯作者: 陈斌, bchen63@163.com

DFT Study on the Active Sites in Mn-Na₂WO₄/SiO₂ Catalyst