巻号一覧
29 巻 (1989)
- 4 号 p. 151-
- 3 号 p. 107-
- 2 号 p. 55-
- 1 号 p. 1-
29 巻, 3 号
選択された号の論文の3件中1～3を表示しています
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堀尾 正和, 渡辺 栄次1989 年 29 巻 3 号 p. 107-112
発行日: 1989/11/25
公開日: 2011/09/20
ジャーナル フリーSpectroscopic and elemental analyses were carried out for humic acids involved in three kinds of kibushi-clays (Motoyama-, Hara-, and Iga-kibushi) and in ball clay (China). The functional groups in the humic acids were also analyzed quantitatively by extracting the humic acids from the clays according to the method of the International Humic Substance Society (IHSS). Humic acids from Motoyama-and Hara-kibushi were classified into B-type and those from Iga-kibushi and ball clay into A-type on the basis of the absorbance analysis. The humic acid in Motoyama-kibushi, that is used favorably to china, was abundant in carboxyl group and less abundant in both alcoholic OH and carbonyl groups, as compared to the other kibushi-clays. In ball clay, the amount of carboxyl group was much larger and that of alcoholic OH much smaller. Although the property with respect to the amounts of carboxyl and alcoholic OH groups suggests that ball clay is favorable for a china resource, the degree of humification is too high to use as a china resource.抄録全体を表示PDF形式でダウンロード (599K) -
堀尾 正和, 渡辺 栄次1989 年 29 巻 3 号 p. 113-117
発行日: 1989/11/25
公開日: 2011/09/20
ジャーナル フリーHumic acids involved in stoneware clays were characterized on the basis of elemental, functional groups, and spectroscopic analyses. Following properties were verified.
1) 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<EH1<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.抄録全体を表示PDF形式でダウンロード (562K) -
加藤 忠蔵1989 年 29 巻 3 号 p. 118-128
発行日: 1989/11/25
公開日: 2011/09/20
ジャーナル フリーThe condition of the adsorbed water, the interlayer water and the constitution water of clay minerals are introduced in outline in the review. The volume and the dehydration temperature of the interlayer water vary by a kind of the exchangeable cation. Also the interlayer water is put in good order and the condition is different from the ordinary liquid water. The interlayer distance shrinks at about-40°C and the interlayer water in this state looks like the same H2O as one of the orderly arrangement under high pressure.
The clay minerals rehydrate immidiately after the constitution water is dehydrated at 550°C-750°C. The dehydration temperature of the rehydrated water is about 550°C and lowered than the primary dehydration temperature. The rehydrated water is different from the original OH and appears as zeolitic water which is catched in the hole of dehydrated OH. But the constitution water is restored as lattice OH by a strong hydrothermal treatment. The constitution water is broken with the destruction of the octahedral layer by acid treatment and also by strong consecutive grinding. These facts are comfirmed by analyses of DTA, X-ray analysis and IR etc.抄録全体を表示PDF形式でダウンロード (2465K)
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