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Citation: Zhong Shunhe, Li Hansheng, Wang Jianwei. Chemisorption and Surface Reaction of CO₂ on Cu-Ni/V₂O₅-SiO₂ Catalyst[J]. Chinese Journal of Applied Chemistry, ;1999, 16(6): 21-24. shu

Chemisorption and Surface Reaction of CO₂ on Cu-Ni/V₂O₅-SiO₂ Catalyst

1.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072

Received Date: 5 February 1993
Available Online: 9 August 1999

The complex support of V₂O₅-SiO₂(VSiO)wasprepared by a surface reaction.VsiO supported Cu-Ni catalyst was prepared by anisovolumic impregnation method.The adsorption states and sites of CO₂ on the catalyst have been investigated by IR and TPD techniques.Results showed that there are three types of cmemical states of CO₂ on the surface of the catalyst: linear,shearing and horizontal.The horizontal adsorption state M-(CO)-O→Vⁿ⁺ is formed by shearingly adsorbed CO₂ on the metal site(M) in coorperation with the adjacent Lewis acid site(Vⁿ⁺) and can be dissociated into M-CO and V-O^- at temperature about 138℃.
- carbon dioxide adsorption,
- V₂O₅-SiO₂ complex support,
- bimetallic catalyst,
- surface Reaction
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Chemisorption and Surface Reaction of CO₂ on Cu-Ni/V₂O₅-SiO₂ Catalyst