巻号一覧
15 巻, 3 号
選択された号の論文の4件中1～4を表示しています
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三量体の決定土田 詔一, 浜中 佐和子, 小川 雅弥1972 年 15 巻 3 号 p. 189-192
発行日: 1972/03/01
公開日: 2009/01/30
ジャーナル フリーThe fourteen trimers were synthesized by the addition reaction of butadiene or cyclopentadiene with their dimers (4-vinylcyclohexene, 5-vinyl-2-norbornene, 3a, 4, 7, 7a-tetrahydroindene or dicyclopentadiene). The products were separated by fractional distillation or preparative gas chromatography. Although some of the trimers could not be separated with good purity by contamination with other isomers, the structure of each trimer was confirmed by means of NMR spectroscopy. The isolated products were used successfully as authentic compounds for identification of each trimer in the reaction products by gas chromatography. The conformational isomers of cyclopentadiene trimer was also investigated.抄録全体を表示PDF形式でダウンロード (301K) -
反応生成物中の三量体土田 詔一, 小川 雅弥1972 年 15 巻 3 号 p. 193-196
発行日: 1972/03/01
公開日: 2009/01/30
ジャーナル フリーThe trimers produced by the reaction between butadiene and cyclopentadiene under various conditions were studied by using gas chromatography. The trimers were believed to be produced by the addition reaction of diene with the dimer, which was formed as an intermediate product of the reaction. Under mild conditions the reaction of butadiene with dicyclopentadiene proceeded predominantly. The reaction by combination of other reactants increased gradually with an increase in the reaction temperature in the following order; butadiene-vinylnorbornene, cyclopentadiene-vinylcyclohexene and cyclopentadiene-vinylnorbornene.
Moreover, cyclopentadiene-tetrahydroindene and cyclopentadiene-exo-dicyclopentadiene reactions proceeded exclusively under severe conditions.抄録全体を表示PDF形式でダウンロード (277K) -
ゼオライト触媒を用いたプロピレンによるキシレンのアルキル化反応森田 義郎, 坂田 信彦, 桑山 力次, 加賀谷 峰夫1972 年 15 巻 3 号 p. 197-200
発行日: 1972/03/01
公開日: 2009/01/30
ジャーナル フリーAlkylation of xylenes with propylene has been studied with the purpose of producing 1, 2, 4, 5, -tetra-alkylbenzene. The alkylation on zeolite catalysts was found to take place consecutively. Di-isopropylxylenes were the final products of the reaction. The reaction was interpreted as the first order kinetics with respect to xylene. 1, 2, 4, 5-tetra-alkylbenzenes were produced in high yield from p-, m-xylene and the mixture of them, but in low yield from o-xylene.
Sodium zeolite exchanged by Lanthanum (LaY) was the most active for this reaction, but showed a rapid fall of activity. Hence, decationated Y zeolite (HY) is belived to be preferable to LaY for industrial purposes.抄録全体を表示PDF形式でダウンロード (250K) -
倉田 由朗, 天野 杲1972 年 15 巻 3 号 p. 201-205
発行日: 1972/03/01
公開日: 2009/01/30
ジャーナル フリーLiquid-phase isomerization of methylcyclopentane, ethylcyclopentane and n-propylcyclopentane has been studied at temperatures ranging from 15 to 75°C, using anhydrous aluminum chloride. as catalyst. The isomerization of ethylcyclopentane takes place producing methylcyclohexane and dimethylcyclopentanes. It was observed that the initial isomerization product from n-propylcyclopentane was ethylcyclohexane, the latter being then converted to dimethylcyclohexanes.
The isomerization of these alkylcyclopentanes was found to obey the first order kinetic equation under given reaction conditions. The values of activation energy and apparent A-factor were 22kcal/mol and 1.5×1010sec-1 for the isomerization of methylcyclopentane to cyclohexane, 16kcal/mol and 2.9×107sec-1 for ethylcyclopentane to methylcyclohexane, 15kcal/mol and 9.1×106sec-1 for n-propylcyclopentane to ethylcyclohexane, respectively.抄録全体を表示PDF形式でダウンロード (394K)
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