Home

Citation: Yu Lin, Xu Yi-De, Guo Xie-Xian. A FT-IR Study on the Interaction of CH₄ and O₂ with the Surface of SrO-La₂O₃/CaO Catalysts[J]. Acta Physico-Chimica Sinica, ;1995, 11(10): 902-906. doi: 10.3866/PKU.WHXB19951009 shu

A FT-IR Study on the Interaction of CH₄ and O₂ with the Surface of SrO-La₂O₃/CaO Catalysts

1.
State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023

Received Date: 19 November 1994
Available Online: 15 October 1995

SrO-La2O3/CaO(SLC) catalysts have been found to be active for the oxidative coupling of methane (OCM), but the lattice oxygen of them is only active for total oxidation as revealed by the studies of in - situ FT-IR on the interaction between CH4 and the oxide surface concerned.
The results of an in - situ FT-IR study on the interaction of the mixture of CH4 and O2 with the catalyst surface show that the oxygen in gas phase can accelerate the total oxidation of CH4 via replenishing the lattice oxygen consumed on the hand, and on the other hand, it will promote the decomposition of surface carbonates formed during the reaction. For La2O3 and LC catalysts, the decomposition of surface La2O2(CO3) carbonate results in the formation of coordination unsaturated oxygen species and oxygen vacancy, and then the oxygen in gas phase could be adsorbed on the oxygen vacancy and electron transfer from coordination unsaturated oxygen species to the oxygen adspecies takes place to produce active oxygen species, probably in the form O2-, with the characteristic IR band at 1180cm-1. Meanwhile on the surfaces of CaO, SrO and SLC catalysts, although no any active oxygen species could be detected, the formation of C2H4 product still is observed at high temperatures. Therefore, it is speculated that the decomposition of furface carbonates directly leads to the formation of active oxygen species, O22-.
- SrO-La₂O₃/CaO,
- Oxidative coupling of methane,
- FT-IR,
- Lattice oxygen,
- Coordination unsaturated oxygen species;Surface carbonates
  ,
1. [1]
  Endong YANG , Haoze TIAN , Ke ZHANG , Yongbing LOU . Efficient oxygen evolution reaction of CuCo₂O₄/NiFe-layered bimetallic hydroxide core-shell nanoflower sphere arrays. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 930-940. doi: 10.11862/CJIC.20230369
2. [2]
  Xiaofeng Zhu , Bingbing Xiao , Jiaxin Su , Shuai Wang , Qingran Zhang , Jun Wang . Transition Metal Oxides/Chalcogenides for Electrochemical Oxygen Reduction into Hydrogen Peroxides. Acta Physico-Chimica Sinica, 2024, 40(12): 2407005-. doi: 10.3866/PKU.WHXB202407005
3. [3]
  Zongfei YANG , Xiaosen ZHAO , Jing LI , Wenchang ZHUANG . Research advances in heteropolyoxoniobates. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 465-480. doi: 10.11862/CJIC.20230306
4. [4]
  Hailang JIA , Hongcheng LI , Pengcheng JI , Yang TENG , Mingyun GUAN . Preparation and performance of N-doped carbon nanotubes composite Co₃O₄ as oxygen reduction reaction electrocatalysts. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 693-700. doi: 10.11862/CJIC.20230402
5. [5]
  Wen YANG , Didi WANG , Ziyi HUANG , Yaping ZHOU , Yanyan FENG . La promoted hydrotalcite derived Ni-based catalysts: In situ preparation and CO₂ methanation performance. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 561-570. doi: 10.11862/CJIC.20230276
6. [6]
  Weihan Zhang , Menglu Wang , Ankang Jia , Wei Deng , Shuxing Bai . 表面硫物种对钯-硫纳米片加氢性能的影响. Acta Physico-Chimica Sinica, 2024, 40(11): 2309043-. doi: 10.3866/PKU.WHXB202309043
7. [7]
  Jinfeng Chu , Yicheng Wang , Ji Qi , Yulin Liu , Yan Li , Lan Jin , Lei He , Yufei Song . Comprehensive Chemical Experiment Design: Convenient Preparation and Characterization of an Oxygen-Bridged Trinuclear Iron(III) Complex. University Chemistry, 2024, 39(7): 299-306. doi: 10.3866/PKU.DXHX202310105
8. [8]
  Lu XU , Chengyu ZHANG , Wenjuan JI , Haiying YANG , Yunlong FU . Zinc metal-organic framework with high-density free carboxyl oxygen functionalized pore walls for targeted electrochemical sensing of paracetamol. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 907-918. doi: 10.11862/CJIC.20230431
9. [9]
  Xinyu Yin , Haiyang Shi , Yu Wang , Xuefei Wang , Ping Wang , Huogen Yu . Spontaneously Improved Adsorption of H₂O and Its Intermediates on Electron-Deficient Mn^(3+δ)+ for Efficient Photocatalytic H₂O₂ Production. Acta Physico-Chimica Sinica, 2024, 40(10): 2312007-. doi: 10.3866/PKU.WHXB202312007
10. [10]
  Yue Zhao , Yanfei Li , Tao Xiong . Copper Hydride-Catalyzed Nucleophilic Additions of Unsaturated Hydrocarbons to Aldehydes and Ketones. University Chemistry, 2024, 39(4): 280-285. doi: 10.3866/PKU.DXHX202309001
11. [11]
  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
12. [12]
  Heng Chen , Longhui Nie , Kai Xu , Yiqiong Yang , Caihong Fang . 两步焙烧法制备大比表面积和结晶性增强超薄g-C₃N₄纳米片及其高效光催化产H₂O₂. Acta Physico-Chimica Sinica, 2024, 40(11): 2406019-. doi: 10.3866/PKU.WHXB202406019
13. [13]
  Zhuomin Zhang , Hanbing Huang , Liangqiu Lin , Jingsong Liu , Gongke Li . Course Construction of Instrumental Analysis Experiment: Surface-Enhanced Raman Spectroscopy for Rapid Detection of Edible Pigments. University Chemistry, 2024, 39(2): 133-139. doi: 10.3866/PKU.DXHX202308034
14. [14]
  Chunmei GUO , Weihan YIN , Jingyi SHI , Jianhang ZHAO , Ying CHEN , Quli FAN . Facile construction and peroxidase-like activity of single-atom platinum nanozyme. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1633-1639. doi: 10.11862/CJIC.20240162
15. [15]
  Siyu HOU , Weiyao LI , Jiadong LIU , Fei WANG , Wensi LIU , Jing YANG , Ying ZHANG . Preparation and catalytic performance of magnetic nano iron oxide by oxidation co-precipitation method. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1577-1582. doi: 10.11862/CJIC.20230469
16. [16]
  Jianyu Qin , Yuejiao An , Yanfeng Zhang . In Situ Assembled ZnWO₄/g-C₃N₄ S-Scheme Heterojunction with Nitrogen Defect for CO₂ Photoreduction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408002-. doi: 10.3866/PKU.WHXB202408002
17. [17]
  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
18. [18]
  Lijuan Liu , Xionglei Wang . Preparation of Hydrogels from Waste Thermosetting Unsaturated Polyester Resin by Controllable Catalytic Degradation: A Comprehensive Chemical Experiment. University Chemistry, 2024, 39(11): 313-318. doi: 10.12461/PKU.DXHX202403060
19. [19]
  Min WANG , Dehua XIN , Yaning SHI , Wenyao ZHU , Yuanqun ZHANG , Wei ZHANG . Construction and full-spectrum catalytic performance of multilevel Ag/Bi/nitrogen vacancy g-C₃N₄/Ti₃C₂T_x Schottky junction. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1123-1134. doi: 10.11862/CJIC.20230477
20. [20]
  Jianjun LI , Mingjie REN , Lili ZHANG , Lingling ZENG , Huiling WANG , Xiangwu MENG . UV-assisted degradation of tetracycline hydrochloride by MnFe₂O₄@activated carbon activated persulfate. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1869-1880. doi: 10.11862/CJIC.20240187

Get Citation

PDF

XML

Metrics

PDF Downloads(2553)
Abstract views(3709)
HTML views(56)

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

A FT-IR Study on the Interaction of CH4 and O2 with the Surface of SrO-La2O3/CaO Catalysts

Metrics

通讯作者: 陈斌, bchen63@163.com

A FT-IR Study on the Interaction of CH₄ and O₂ with the Surface of SrO-La₂O₃/CaO Catalysts