Metathesis of 1,5-Cyclooctadiene over Supported Rhenium Oxide Catalysts
| Autor: | Kaizaburo Saito, Tsutomu Yamaguchi, Kozo Tanabe, Toshimasa Ogura, Misao Yagi |
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| Rok vydání: | 1979 |
| Předmět: | |
| Zdroj: | Bulletin of the Chemical Society of Japan. 52:3192-3197 |
| ISSN: | 1348-0634 0009-2673 |
| DOI: | 10.1246/bcsj.52.3192 |
| Popis: | The metathesis of 1,5-cyclooctadiene (COD) was investigated over supported rhenium oxide catalysts in terms of carrier effects, acid properties of the catalysts, product distributions, and the reversibility of the reaction. Only alumina plays an effective role as a support. The reaction of COD over rhenium oxide–alumina catalyst yields oligomers, C8n, sesqui-oligomers, C8n+4, and polymers. The important results are as follows: 1) The product distribution in terms of the carbon number of the products shows a decay curve with maxima around C12, C16, and C20. 2) The reaction of oligomers gives COD and some products similar to those of COD. 3) The reactivity of 1,5,9-cyclododecatriene (CDT) was low compared with COD, 1,5,9,13-cyclohexadecatetraene (CHT), and 1,5,9,13,17-cycloeicosapentaene (CEP). 4) A reaction of a mixture of macrocyclic polyenes and polymers gave appreciable amounts of CDT, CHT, and CEP, whereas no COD was obtained. On the basis of the results, we conclude that the products, oligomers, sesqu... |
| Databáze: | OpenAIRE |
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