Low heat the adsorbent and the production manner and the treatment mannered null meta titanic acid of the aqueous solution which includes the cesium ion include

摘要

PROBLEM TO BE SOLVED: To provide an adsorbent comprising a titanium-based material, particularly a cesium adsorbent and a method for production thereof.;SOLUTION: There is provided an adsorbent characterized by including a low-crystalline or amorphous titanium hydroxide in which any of relative intensities with respect to the lowest intensity value of background in the diffraction peaks of angle (2θ) 24.6°, 28.0° and 48.5° is ≤10.0 when defining the lowest intensity value of background as 1 in the range of 20°≤2θ≤60° in an X-ray powder diffraction, and the volume of fine pores measured by a nitrogen gas adsorption method is ≥0.5 cm³/g. The adsorbent is obtained by, for example, heating the titanium hydroxide obtained through a process of producing titanium oxide by a sulfuric acid method in an aqueous alkali solution or hydrothermally treating in the presence of alkali, and neutralizing the obtained solid product by an acid in a suspension at a temperature of ≤60°C.;COPYRIGHT: (C)2013,JPO&INPIT