Quantization calculation has shown that these four amide compounds are easy cationized and the more N number,the more hydrocarbon on N and the stronger the trend of cationization of reagents.

• 动电行为表明胺类化合物在铝硅酸盐矿物表面发生了静电吸附,当药剂极性基团电负性越大,改变矿物表面电性也越大。