巻号一覧
19 巻, 3 号
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鈴木 俊一郎, 柴 竹男, 丁 平鎮, 土屋 富士雄, 伊香輪 恒男1976 年 19 巻 3 号 p. 226-229
発行日: 1976/03/01
公開日: 2009/01/30
ジャーナル フリーThe liquid-phase oxidation of cyclohexene was studied in the presence of bismuth sulfate calcined at various temperatures. The increase of catalyst calcination temperature resulted in a stepwise decrease of oxidation rate and an increase of the induction periods. The distribution of products changed markedly with the rise of catalyst calcination temperature, the main product being cyclopentene-1-carboxaldehyde (CP-1-A) with the uncalcined catalyst. The increase of calcination temperature resulted in a decrease of the yield of CP-1-A and an increase of the cyclohexenol and cyclohexenone. It was found by the measurement of DTA, TGA, and IR that the sorbed water on the bismuth sulfate was desorbed stepwisely and the surface area of bismuth sulfate did not change during the calcination. A good correlation was obtained between the change of the catalytic activity and the amount of the sorbed water on the bismuth sulfate. In a similar manner, oxidation of several cycloolefins was tested. 4-Methylcyclohexene was oxidized to corresponding aldehydes with high selectivity. The oxidation rate was quite slow in 1-methylcyclohexene, 3-methylcyclohexene.抄録全体を表示PDF形式でダウンロード (288K) -
立本 英機, 北川 睦夫1976 年 19 巻 3 号 p. 230-233
発行日: 1976/03/01
公開日: 2009/01/30
ジャーナル フリーAn activated carbon was used for removal of a trace amount of dissolved oil in the waste water from the petroleum refinery. The oily water was tested by a batch method and also a continuous method of percolation through granular bed. Commercially available activated carbons were used in both methods.
The following results were obtained:
1) Almost all kinds of activated carbons used were found to be the dissolved oily substances capable of removing for practical purposes.
2) The adsorptive capacities of the activated carbons depend remarkably upon the pH value of the oily water and effective pH values for adsorption were found to be 6-8.
3) In the case of the oily water tested here, the order of breakthrough points of their adsorptive capacities on activated carbons was BOD, COD, n-Hexane extracts and phenols.抄録全体を表示PDF形式でダウンロード (289K) -
上田 成, 中田 善徳, 横山 慎一, 石井 忠雄, 武谷 愿1976 年 19 巻 3 号 p. 234-238
発行日: 1976/03/01
公開日: 2009/01/30
ジャーナル フリーHydrocracking, especially hydrodemetallization, of residual oils with the red mud catalyst was carried out using a batch reactor and the following results were obtained:
(1) Atmospheric and vacuum residues were treated under the following conditions, i.e., reaction temperature 400°C, reaction pressure 150-160kg/cm2, reaction time 60min, removing 80-90% vanadium and nickel, 30-40% sulfur and 30-50% asphaltene.
(2) Hydrodemetallization was promoted by the advance of hydrocracking, and in order to remove approximately 80% of vanadium at least 3mol/kg-oil or over of hydrogen was required.
(3) When the non-treated red mud was compared with the pre-sulfurized red mud, both the hydrocracking activity and the hydrodemetallization activity were low. However, after 60min, at 400°C, the generated hydrogen sulfide sulfurized the red mud, and the activity of the non-treated catalyst was approximately the same as the pre-sulfurized catalyst.
(4) The asphaltene removal was most strongly influenced by the reaction pressure and when the reaction pressure was under 110kg/cm2 the carbonization reaction proceeded. Thus the pressure of 150-160kg/cm2 was selected.
(5) While this hydrodemetallization reaction is believed to be effective as a pretreatment process of direct hydrodesulfurization, an additional work such as pelletizing the red mud or experiments using a flow reactor are necessary.抄録全体を表示PDF形式でダウンロード (380K)
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