Liquid phase disproportionation of propylene over MoO3-Al2O3 catalyst in the presence of solvents.
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概要
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Liquid phase disproportionation of propylene using hydrocarbon solvents over MoO<SUB>3</SUB>–Al<SUB>2</SUB>O<SUB>3</SUB> (atomic ratio: Mo/Al=1⁄25) catalyst was investigated at 80 °C at a pressure of 50 kg/cm<SUP>2</SUP>. The catalytic activity in heptane solution was preserved for a long time, because the small amount of polyolefins produced by polymerization reactions was entirely dissolved in the heptane and carried away from the catalyst surface. Selectivity for ethylene and butenes increased slightly in the heptane solvent. Benzene was not a suitable solvent because of poor solubility of the polymers and the formation of alkylbenzenes. A small amount of dissolved hydrogen also was found to be somewhat effective in lengthening the catalyst life. The polymers were found to be composed of larger amounts of ethylene than propylene and to have two molecular weight distribution maxima.
- 公益社団法人 日本化学会の論文
著者
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Sodesawa Toshiaki
Department Of Applied Chemistry Faculty Of Engineering Chiba University
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Kamiya Yoshio
Department of Applied Chemistry Faculty of Engineering The University of Tokyo
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Kamiya Yoshio
Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo
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Ogata Eisuke
Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo
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