巻号一覧
8 巻 (1981)
- 4 号 p. 131-
- 3 号 p. 91-
- 2 号 p. 47-
- 1 号 p. 2-
8 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
- |<
- <
- 1
- >
- >|
-
吉田 利三郎, 海保 恵亮, 有川 晶, 瀬田 俊雄1981 年 8 巻 4 号 p. 131-134
発行日: 1981/10/05
公開日: 2009/09/07
ジャーナル フリーThe exothermic phenomena in the mixture of sodium sulfide, carbon black, calcium oxide and iron powder in the air were investigated by means of x-ray diffraction, calorimetry, thermogravimetry and gas chromatography.
On the basis of these experimental results, the mechanism of the exothermic reaction in the mixture can be assumed as follows.
The oxidation of sodium sulfide was at first begun by air in the presence of carbon black and then, the water of crystallization in the compound was dehydrated at about 353K. The dehydrated water reacted with calcium oxide to form calcium hydroxide and the heat of reaction raised the temperature of the mixture. Iron powder reached to the combustible state at about 643K and successively changed to Fe3O4 and Fe2O3 while the exothermic reaction. Carbon black partly ignited and formed carbon monoxide and carbon dioxide. The carbon dioxide reacted to calcium oxide and formed calcium carbonate.
The mixture which consists of 18% sodium sulfide, 18% carbon black, 22% calcium oxide and 42% iron powder generated heat about 2.63kJg-1.抄録全体を表示PDF形式でダウンロード (459K) -
中西 浩一郎, 東原 秀和, 真屋 謙吉, 阿部 純一1981 年 8 巻 4 号 p. 135-139
発行日: 1981/10/05
公開日: 2009/09/07
ジャーナル フリーThe molar excess Gibbs energies GE and molar excess volumes VE for aqueous solutions of piperidine and pipecoline (2-methyl-piperidine) have been measured at 298.15K and 308.15K (GE only) for the whole composition range by static and pyknometric methods. All the solutions exhibit positive deviation from ideality and volume contraction. An anomaly in vapor pressure (and GE) vs. molar composition relation and a rapid decrease of partial molar volume of piperidines in dilute aqueous solution have been found and interpreted in terms of the dissociation of piperidines as weak organic electrolytes.抄録全体を表示PDF形式でダウンロード (536K) -
森本 敏1981 年 8 巻 4 号 p. 140-149
発行日: 1981/10/05
公開日: 2009/09/07
ジャーナル フリーThe recent basic studies by means of heat of solution measurement are reviewed. In this review, the solute-solvent interactions in organic non-electrolyte system under the normal pressure and temperature are mainly described. Contents are follows: 1. accuracy and standard systems, 2. the heat of solution of low molecular weight organic compounds, 3. the heat of solution of polymer liquids, 4. contribution terms in the heat of solution datum, 5. relation between direct and indirect measurements and 6. recent solution calorimeters.抄録全体を表示PDF形式でダウンロード (1392K) -
(2)熱伝導率・熱拡散率(そのII)神本 正行, 金成 克彦, 高橋 洋一1981 年 8 巻 4 号 p. 150-156
発行日: 1981/10/05
公開日: 2009/09/07
ジャーナル フリーPDF形式でダウンロード (923K)
- |<
- <
- 1
- >
- >|