期刊论文

Guo, Y.

中文

离子交换与吸附

1001-5493

2005

21

2

137-142

10.3321/j.issn:1001-5493.2005.02.006

(2003-2):湖南省株洲市科技局科研项目 (04028B):中南林学院校科研和教改项目

本校为第一且通讯机构

对经NaCI处理的钠型蛭石在不同pH和温度条件下进行了铵离子交换性能的研究.结果表明,交换反应在前60min速率最快,约120min就趋向于平衡2铵离子交换总量随pH变化而波动,在pH=7,点上取最大值为92.85mmol/100g2铵离子交换量和交换选择性随温度的降低而显著升高.

Experiment was designed under different pH and temperature conditions to analysis the NH4+ exchange capacity of Na+-vermiculite minerals pre-treated by NaCl solutions. The results indicate that the exchange reactions occurred most rapidly at the beginning 60 minutes and approached to equilibrium by about 120 minutes. The NH4+ exchange capacity of the minerals varied with pH with a peak value of 92.85 mmol/100g at pH 7. Both the NH4+ exchange capacity and its selectivity of the mi...