开发合成了一种新型廉价螯合捕收剂COBA,研究了它对一水硬铝石和高岭石的捕收活性、结构-性能关系及作用机理.结果表明:COBA对一水硬铝石的捕收能力强,而对高岭石的捕收能力弱,具有比水杨羟肟酸更好的选择性.其性能差异主要是由极性基结构差异即电负性、拓扑连接指数、断面尺寸和疏水性所引起的.COBA对一水硬铝石的捕收机理为:其分子中的3个O原子通过化学成键与矿物表面Al原子形成了两环螯合物.
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