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Volume 44, Issue 7
Displaying 1-6 of 6 articles from this issue
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[in Japanese]1965 Volume 44 Issue 7 Pages 499
Published: July 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (196K) -
Mikiji Kaharu1965 Volume 44 Issue 7 Pages 500-504
Published: July 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSJapan's iron and fuel resources are very scarce, and contrary to the great enphasis of both military and industrial program upon her iron industry, we had failed in its establishment before the second World Wor.
After the war, however, many coloniee in Asia have become independent, and conse-quently the foreign trade has been active according to the principle of the free economy, This paper describes how Japan has become an industrial country.View full abstractDownload PDF (705K) -
Minoru Nakano1965 Volume 44 Issue 7 Pages 505-514
Published: July 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSWithout regard for the request of an expansion of the production, our coal production is now lagging. It is believed the cause of lagging is the shortage of labor, financial difficulty, and some technical lag.
At present, we have in Japan no political measure about comprehensive program. for coal, petroleum, natural gas and atomic energy, so it is difficult of the supposition to, future production of our coal.
On the future prospects of our coal mining industry, by my opinion, there will be a fair chance for the step up the production by advanced mechanization of underground coal face.View full abstractDownload PDF (1432K) -
Determination of Functional Groups in CharsSohei Suga1965 Volume 44 Issue 7 Pages 515-523
Published: July 20, 1965
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSFunctional groups in chars were determined in order to obtain as complete pictures as possible of the char structure. Hydroxyl group was determined by the acetylation method, the methylation method with diazomethane and the Grignard reagent method respectively, and carbonyl group by the hydroxylamine method and the Grignard reagent method. Satisfactory results were obtained by these methods on cellulose chars, except the Grignard reagent method.
The amounts of non-reactive oxygen in cellulose chars are more than in coals simillar in carbon contents. In the carbon content range 90-96 percent in these chars, the contents of hydroxyl and carbonyl oxygen lower gradually, however, that of non-reactive oxygen falls rapidely. At carbon contents above 98 percent oxygen is almost non-reactive and hydroxyl oxygen is present in small amount.View full abstractDownload PDF (944K) -
C. Yokokawa, M. Tokashiki, Y. Watanabe, K. Hosokawa, Y. Takegami1965 Volume 44 Issue 7 Pages 524-533
Published: July 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe action of promotors and carriers of the Cobalt and Nickel catalysts for Fischer-Tropsch synthesis reaction was discussed. The experiments were carried out by an by an ordinary fixed bed-flow system reactor at 150-300° and 100, - 400 space velocity under atmospheric pressure. Co and Ni catalysts, unmodified metallic and variously modified with kieselguhr and ThO2 were examined. At 190°, unmodified metallic Co catalyst produces large amounts of gaseous hydrocarbons, above 98% of which is methane, but produces no liquid hydrocarbons. By some treatments, such as slight pre-carburization or addition of little amounts of various volatile substances into synthesis gas, the unmodified metallic Co catalyst gave higher homologs of hydrocarbon. It was also found that the higher the degree of modification is the higher the degree of unsaturation of products is. For nickel catalysts the same facts were observed. According to these experimental facts, it is concluded that, in the case of unmodified metallic catalysts the velocity of hydrogenation reaction (Vn) is too large comparing with the velocity of C-C bond formation (Vp) to produce liquid hydrocarbons, and that kieselguhr, ThO2 or little amounts of added substances act to establish a suitable relationship between Vp and Vh. A catalyst, which is not modified permanently but is controlled temporarily by a teat-ment, maintains a controlled activity to give liquid hydrocarbons during prolonged reaction.View full abstractDownload PDF (1310K) -
1965 Volume 44 Issue 7 Pages 538-542
Published: July 20, 1965
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (703K)
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