巻号一覧
11 巻, 12 号
選択された号の論文の5件中1～5を表示しています
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平戸 瑞穂1968 年 11 巻 12 号 p. 934-938
発行日: 1968/12/25
公開日: 2009/01/30
ジャーナル フリーEffect of dilution by hydrogen, methane and steam upon the pyrolysis of propane was studied, using annular tubular reactor made of quartz under the operating conditions-between 700 and 950°C and the atomospheric pressure.
In the case of hydrogen dilution, it was found that ethylene yield increased remarkably and a higher selectivity was obtained. While the formation of carbon and tar was considerably reduced, the propylene yield also decreased in proportion to the amount of hydrogen added.
In the presence of methane, the increase in ethylene yield was considerable, but the formation of carbonaceous matter was not retarded appreciably.
In the case of steam dilution, ethylene yield improved, and the amount of carbon and tar decreased.抄録全体を表示PDF形式でダウンロード (364K) -
正野 博視, 平田 光穂1968 年 11 巻 12 号 p. 939-943
発行日: 1968/12/25
公開日: 2009/01/30
ジャーナル フリーA new iterative method is developed for solving problems of the product distribution and the composition and temperature profile in the column for multi-component distillation by the plate-to-plate calculation. In the proposed method, it is assumed only that the distillate and the bottoms composition are equal to the feed composition at the start of the calculation. This method employs Thiele-Geddes equations for plate-to-plate calculation from the top and bottom of the column to feed plate, and the θ-method for the convergence. Various cases were computed by this method.
This method is simple and insures rapid convergence to solve problems of multi-component distillation.抄録全体を表示PDF形式でダウンロード (329K) -
森田 義郎, 市橋 宏, 菊地 英一, 斎藤 昌弘, 山本 研一1968 年 11 巻 12 号 p. 944-947
発行日: 1968/12/25
公開日: 2009/01/30
ジャーナル フリーThe steam reforming of hexane was studied in the temperature range of 450∼500°C under the pressure of 1∼30atm by using nickel catalyst. The results obtained are summarized as follows:
1) The equilibrium composition of products is determined by the following two reactions: i) CO+H2O_??_CO2+H2 ii) CO+3H2_??_CH4+H2O
2) The rate determining step is involved in the decomposition of hexane by steam, and the reactions i) and ii) are fast.
3) It is deduced that the reactant adsorbed on nickel is hexane and steam in gaseous phase or weakly adsorbed state reacts with the adsorbed hexane.抄録全体を表示PDF形式でダウンロード (300K) -
桐生 知男, 高岩 正和1968 年 11 巻 12 号 p. 948-950
発行日: 1968/12/25
公開日: 2009/01/30
ジャーナル フリーAfter plotting of data for liquid-liquid equilibrium of ethanol-water-benzene ternary system, which was confirmed to check with the data of R.W. Moulton, equilibrium data for the ternary system, 1, 3-dichloro-2-propanol-water-allylchloride, were obtained.
Allylchloride has been found to be a suitable solvent for extraction of 1, 3-dichloro-2-propanol in the water phase.抄録全体を表示PDF形式でダウンロード (194K) -
中島 豊比古, 菅名 文弘, 田野辺 親人1968 年 11 巻 12 号 p. 951-954
発行日: 1968/12/25
公開日: 2009/01/30
ジャーナル フリーAcidic substances contained in asphalt have varying effects upon emulsifiability of asphalt and its adhesion with aggregates, and therefore, determination of acidity of asphalt is of importance. However, there has not been established a method of precisely determining the acidity of asphalt. This paper reports on an improved color-indicator titration method, by which the acid number of asphalt is determined.
By treating benzene solution of asphalt with alcohol, acidic constituents were selectively extracted into alcohol solution, while asphaltic matters precipitated. A color-indicator titration method then was applied to the resultant faint-colored solution. The change of color at the end point was clearly observed, and the results were obtained with good reproducibility and checked well with the results by the I.P. 177/64 method. Alcohols having not more than three carbon atoms have been found suitable for extraction.抄録全体を表示PDF形式でダウンロード (312K)
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