Ammonium-ion-exchange reaction of titanium dioxide hydrate fibers

Ammonium-ion exchange experiment has been carried out on the cation exchang e property of the fibrous titanium dioxide hydrate having layer structure. The sum of the yield ion-exchanged and adsorption in aqueous ammonium solut ion increased with reaction time and reached 3.7 mmol/g at the maximum with in 24 h. It was found that those two kind of yields, by adsorption on the s urface and by ion-exchange, could be distinguished from each other. The com position of the substance obtained after the ion-exchange was (NH4)(1.0)H1. 0Ti4O9. H2O, n approximate to 1, of which chemical properties was examined.