巻号一覧
12 巻, 5 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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桐生 知男, 阿部 紘一, 本間 昭弘, 刑部 謙一, 前田 忠雄, 魚沢 雅晴1969 年 12 巻 5 号 p. 350-355
発行日: 1969/05/25
公開日: 2009/01/30
ジャーナル フリーProcesses for chlorohydrination of allylchloride and methallylchloride were investigated, using hypochlorous acid, which was generated by carbon dioxide-bubbling into sodium hypochlorite solution. Allylic chlorides were more selectively chlorohydrinated with hypochlorous acid, generated by carbon dioxide-bubbling into sodium hypochlorite solution than with the same made by addition of hydrochloric acid. Dichlorohydrins thus produced were extracted with allylchloride or methallylchloride, and dehydrochlorinated with granules of sodium hydroxide in the liquid phase. Dehydrochlorination is therefore a reaction of liquidsolid system and the rates of dehydrochlorination of two kinds of dichlorohydrins of allylchloride by granules of sodium hydroxide are different. At 25°C, the rate constant of dehydrochlorination of 1, 3-glycerin dichlorohydrin is 0.132l/min•mol and that of 1, 2-glycerin dichlorohydrin 0.0045l/min•mol, and these data are extremely small as compared with the data of de La Mare in the case of reaction between dichlorohydrins of allylchloride and sodium hydroxide solution.抄録全体を表示PDF形式でダウンロード (457K) -
エチレンとプロピレンの共二量化反応におけるアルキル基追出し用ニッケル触媒安藤 宏, 猪俣 紀, 榎本 稔, 清水 征生, 雨宮 登三, 松本 敬信1969 年 12 巻 5 号 p. 356-361
発行日: 1969/05/25
公開日: 2009/01/30
ジャーナル フリーThe activity of nickel catalyst which was used for accelerating the displacement reaction of the alkyl radicals in the trialkyl aluminium (TAA) molecule with ethylene was studied.
The colloidal nickel catalyst, which is usually used for this displacement purpose, was made by the addition of nickel chloride to the triethyl aluminium (TEA). While the catalyst exhibits high activity and does not affect the addition reaction of propylene to TEA at higher temperatures, its activity gradually decreased by the repeated use thereof, and its separation from the reaction mixture was difficult. The oxide from of nickel also had a considerably high activity for the displacement reaction, but its activity decreased by its repeated use as in the case with the colloidal nickel catalyst. The decrease of the catalyst activity is thought to be caused by the polymerized materials which covered the surface of catalyst.抄録全体を表示PDF形式でダウンロード (446K) -
エチレンとプロピレンの共二量化反応 (その2)安藤 宏, 猪俣 紀, 榎本 稔, 清水 征生, 西方 宏之, 雨宮 登三, 松本 敬信1969 年 12 巻 5 号 p. 362-366
発行日: 1969/05/25
公開日: 2009/01/30
ジャーナル フリーThe synthesis of 2-methyl-1-butene by the codimerization of ethylene and propylene in the presence of triethyl aluminium (TEA) was studied, using a continuous bench scale pilot plant. For the preliminary experiments, the solubilities of propylene, ethylene and nitrogen in TEA or toluene were determined. The rate of change in selectivities of isopentyl radicals including methyl butenes, differed from that in the previous report. This was because of the fact that the present experiments were carried out in the liquid phase, while the previous ones were carried out in the mixed phase of liquid and gas. The yield of 2-methyl-1-butene was 70∼80% through out the first and second reaction stages of codimerization.抄録全体を表示PDF形式でダウンロード (385K) -
藤元 薫, 功刀 泰碩1969 年 12 巻 5 号 p. 367-371
発行日: 1969/05/25
公開日: 2009/01/30
ジャーナル フリーThe kinetics of catalytic cracking of n-hexadecane over silica-alumina catalyst was studied using a simulation method.
The reaction model was postulated as follows:
Where kH and kX are the rate constants for hydrogenation and consumption reaction of olefins, respectively. Assuming all reactions to be of the first order, simultaneous differential equations were made for all components. Experimental results were well simulated over a wide range of contact time by solving the differential equations using a digital computer, where kX was a variable parameter. The rate constant of each reaction was determined from the calculated results. The values of kC, kH and kX were of the same scale. The rates of the hydrogenation of branched olefins were several times larger than those of straight olefins. The hydrogenation rate decreased as temparature rose. Large olefins were easier to react than smaller ones. These phenomena were explained by the carbonium ion mechanism.
The contour charts of propene, butene and pentene were prepared with regard to temperature and contact time over the range of 400 to 530°C and 0 to 12 second. High olefin yields were obtained at higher temperatures and rather short contact time.
The change of product distribution by the process period was also simulated using the same reaction model and the time function of above described three reactions.抄録全体を表示PDF形式でダウンロード (390K) -
鈴木 啓輔, 穴沢 一郎, 市川 良正1969 年 12 巻 5 号 p. 372-374
発行日: 1969/05/25
公開日: 2009/01/30
ジャーナル フリーStudy of liquid phase ammoxidation of toluene under normal pressure was carried out in order to examine effects of reaction conditions on toluene conversion and the formation of benzonitrile.
Toluene conversion at 59.5mol% and yield of benzonitrile at 85.8mol% were obtained under the following conditions; reaction temperature at 180°C, oxygen flow rate at 0.8l/hr, ammonia flow rate at 4.5l/hr, the reaction time of 10 hours, using Mn-acetate (0.053wt% on the basis of toluene used) and NH4Br (0.026wt% on the base of toluene used) as the catalysts, and benzonitrile as the solvent.抄録全体を表示PDF形式でダウンロード (220K)
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