Showing papers on "Aluminium hydroxide published in 1968"

Studies on the Sol-Gel Transformation of Aluminium Hydroxide in the Presence of Dyes

Abstract: The influence of dyes on the gelation of aluminium hydroxide sol has been studied with the help of viscometric and pH metric methods. From these studies it is inferred that the behaviour of acid dyes towards alumina is different from that of basic dyes. The results have been interpreted in terms of various structural changes taking place in the dye molecule. Adsorption studies reveal that the data do not fit well into the Langmuir or Freundlich adsorption isotherm equation in the case of alizarin sulphoric acid, while in the cases of methyl orange, methylene blue, and malachite green, the data are found to fit well into the Langmuir adsorption equation.