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The graft-polymerization of hydroxyethyl methylacrylate (HEMA) on micro-sized silica gel particles was first conducted by initiating of a surface-initiating system, which was constituted by the bonded amino groups on the modified silica gel particles and persulfate in the solution, obtaining the grafted particles PHEMA/SiO 2 with a high grafting degree of 40g/100g. Subsequently, 8-hydroxyquinoline...
The extraction of yttrium from chloride medium with a mixture of 2-ethylhexyl phosphonic acid mono-(2-ethylhexyl) ester (HEHEHP, H 2 A 2 ) and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272, H 2 B 2 ) in kerosene has been studied. The extraction mechanism was determined by the methods of slope analysis and constant mole. The maximum synergistic enhancement factor...
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