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Citation: Le Qing-Hua, Xu Jin-Lin, Shi Ya-Jun. Catalytic Activity of Vanadium Pentoxide for the Absorption of Carbon Dioxide by Potassium Carbonate Solution[J]. Acta Physico-Chimica Sinica, ;1992, 8(06): 753-759. doi: 10.3866/PKU.WHXB19920608 shu

Catalytic Activity of Vanadium Pentoxide for the Absorption of Carbon Dioxide by Potassium Carbonate Solution

1.
Institute of Chemical Engineering, East China University of Chemical Technology, Shanghai 200237

Received Date: 5 June 1991
Available Online: 15 December 1992

The chemical mechanism that vanadium pentoxide, as an additive, enhances the absorption rate of carbon dioxide in aqueous potassium carbonate solution has been suggested.
Experiments proved that V_2O_5 exists as V_2O_7~(4-) and V_4O_(12)~(4-) in the carbonate solution, as pH value is in the range of 9—12. The catalytic action of V_2O_5 is only related to the concentration of V_2O_7~(4-) and pH value of the solution, the optimum range of pH value is 10.6 to 10.8, and the quantity of V_2O_5 added has to be restricted in order to maintain the optimized pH range.
- Vanadic oxide; Carbon dioxide; Potassium carbonate; Absorption; Catalytic mechanism
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