物理化学学报 >> 1992, Vol. 8 >> Issue (06): 753-759.doi: 10.3866/PKU.WHXB19920608

研究论文 上一篇    下一篇

五氧化二钒催化钾碱液吸收二氧化碳的机理

乐清华; 徐晋林; 施亚钧   

  1. 华东化工学院化学工程研究所,上海 200237
  • 收稿日期:1991-06-05 修回日期:1991-12-28 发布日期:1992-12-15
  • 通讯作者: 乐清华

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

Le Qing-Hua; Xu Jin-Lin; Shi Ya-Jun   

  1. Institute of Chemical Engineering, East China University of Chemical Technology, Shanghai 200237
  • Received:1991-06-05 Revised:1991-12-28 Published:1992-12-15
  • Contact: Le Qing-Hua

摘要: 从五氧化二钒(V_2O_5)的物理化学性质出发,研究了V_2O_5加快CO_2在钾碱液(K_2CO_3)中的吸收速率的化学作用机理。
实验证明: 当9

关键词: 五氧化二钒, 碳酸钾, 二氧化碳, 吸收, 催化机理

Abstract: 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.

Key words: Vanadic oxide, Carbon dioxide, Potassium carbonate, Absorption, Catalytic mechanism