酸化第2鉄懸濁液に対する燐酸イオンの分散効果について
1961 年 77 巻 874 号 p. 253-257
詳細
1961 年 77 巻 874 号 p. 253-257
The effect of phosphorous ion on the dispersion of ferric oxide suspension has been studied by the measurements of the amounts of adsorption ζ-potential and so on.
The experimental results are as follows:
ζ-potential of ferric oxide increases not only with the concentration of hydroxyl ion, but also with that of phosphorous ion in the solution.ζ-potential is, however, higher in the presence of phosphorous ion than in the absence at the same pH value. It is considered that this difference is due to the adsorption of phosphorous ion on the surface of ferric oxide. The suspension always disperses where ζ-potential is high.
The effect of phosphorous ion on the dispersion of ferric oxide suspension should be attributed to the increase of electrostatic repulsion resulted from the adsorption of phosphorous ion and hydroxyl ion formed by hydrolysis of phosphate on the surface of ferric oxide.
