巻号一覧
13 巻 (1973)
- 4 号 p. 113-
- 3 号 p. 75-
- 2 号 p. 39-
- 1 号 p. 2-
13 巻, 4 号
選択された号の論文の4件中1～4を表示しています
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下坂 康哉, 川野 昌樹, 谷口 髞, 市原 祥次1973 年 13 巻 4 号 p. 113-122
発行日: 1973/12/25
公開日: 2011/09/20
ジャーナル フリーThe mechanism of dissolution of Mg2+ from sepiolite by treating with aqueous solution of hydrogene chloride was studied. Sepiolite used was a pure one of α-type from Korea.
X-ray diffraction patterns of specimens treated with constant treating time (1hr) do not differ from non-treated powder up to 1N concentration. Above 1N, the inten-sities of diffraction peaks decrease with increasing acid concentration. X-ra diffrac-tion patterns of the specimens treated with 3N concentration from lhr to 9hrs change with a similar tendency to those treated from 3N to 1ON for 1hr and that treated with 3N concentration for 26hrs shows that this specimen is amorphous. Weight losses from 195° to 420°(W2) and from 670° to 830°(W4) which is caluculated by choosing 195° as a weight basis decrease with increasing degree of the acid treat-ment. It is clarified from the chemical analysis that Mg2+ included in the structure of sepiolite dissolves easily by the treatment with dilute acid solution.
These results show that Mg2+ dissolves from the structure of sepiolite by acid treatment, accompanied with this, dehydration of bounded water occurs and as a result the structure of sepiolite changes.抄録全体を表示PDF形式でダウンロード (985K) -
堀井 清之, 石川 平七1973 年 13 巻 4 号 p. 123-130
発行日: 1973/12/25
公開日: 2011/09/20
ジャーナル フリーAllophane is a special kinds of clay mineral widely distributed in Japan, this is itself hydrated amorophous aluminium silicate gel. The Si02/Al203 of allophane depends on the producing place.
The charactristic of Terauchi-do was studied by H. Tanaka. But Kisodo, Kitakami-do and Osawa-do are not studied. So, these allophanes were studied dissolution charactristic in liquid phase by NaOH solution, physical properties, analysis by Infrared spectroscopy & X-ray, the effect of Si02/Al2O3 mol. ratio in allophane and chemical composition of these allophanes on synthesis of zeolite.
The result, these allophanes showed the special dissolution charactristic. The extraction fraction of alumina in allophane increased with treating time becoming longer. But, the treating time becoming longer, the extractive fraction of silica in allophane increased temporarily and then decreased rapidly. This charactristic can be estimated originating in the action of Si02 & Al203 in liquid phase and synthesizing of zeolite.抄録全体を表示PDF形式でダウンロード (4835K) -
宇田川 重知, 浦部 和順, 井川 博行, 加藤 仁也, 蓮 秀樹1973 年 13 巻 4 号 p. 131-138
発行日: 1973/12/25
公開日: 2011/09/20
ジャーナル フリーA high temperature apparatus for Weissenberg camera employing equi-inclination diffraction geometry was designed and constructed. The apparatus was successfully operated at temperatures up to 1, 350°C for a long run, but at temperatures up to about 1, 400°C for a short run. And, it is possible to control the atmosphere of the furnace. The inclination angle of this apparatus was designed to be 45° with equi-inclination diffraction geometry.
The study on the thermal transformation of muscovite was made by using Weissenberg camera with a high temperature apparatus described here. The thermal transformation process is characterized by a structural continuity reflected by the topotactic transformation throughout the entire transformation process. The topotactic relations among muscovite, muscovite anhydride, spinel type phase, and corundum were as follows:
aM//aM.an.//[112] Sp.//[2110] Co.
bM//abM.an.//[110] Sp.//[0110] Co.
c*M//c*M.an.//[111] Sp.//[0001] Co.
where the suffixes M., M. an., Sp. and Co. signify muscovite, muscovite anhydride, spinel type phase, and corundum respectively.抄録全体を表示PDF形式でダウンロード (8467K) -
児玉 秀臣1973 年 13 巻 4 号 p. 139-143
発行日: 1973/12/25
公開日: 2011/09/20
ジャーナル フリーPDF形式でダウンロード (3027K)
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