〓器粘土に含まれる腐植酸の官能基

概要

論文の詳細を見る
Humic acids involved in stoneware clays were characterized on the basis of elemental, functional groups, and spectroscopic analyses. Following properties were verified. l) Compared with the humic acid involved in soils, the humic acids in the clays were abundant in nitrogen. 2) The humic acid in Imari 2 clay was classified into B-type, while those in the other clays into A-type. The degrees of humification of humic acids were increased as follows : IM2 < EHI < MA4 < BE < YA. 3) The amounts of functional groups (COOH, OH, and CO) varied greatly depending on the kind of clay. A good correlation was found between the amount of CO- and COOH-groups. The amount of phenolic OH was scarcely different from one clay to another, while alcoholic OH groups content was 50 times different among clays. 4) On the basis of the amount of functional groups, the clays were evaluated as the resource of a china ware.
日本粘土学会の論文
1989-11-25