Studies on the Silk-Rhodium Catalyst

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概要

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• 1) The most active catalyst was obtained when 400 mg. of silk-fibroin was boiled with 30 ml. of 0.5% aqueous solution of rhodium chloride for ca. 30 min., and the resulting chelate was then reduced.<BR>2) The activity of this catalyst was not influenced significantly by the conditions for its preparation and was maintained or even increased greatly on storage for a long period. Benzyl mercaptan, ferric and cupric ions poisoned the catalyst, but the inhibition by the metal ions could be restored by ethylene-diaminetetraacetic acid.<BR>3) This catalyst was extremely active for the hydrogenation of the types C=C double bonds C=CHCH<SUB>2</SUB>OH and C=HCOOH but inactive for carbonyl groups. For the hydrogenation of other types of C=C double bonds and of nitro groups, the catalyst seems to be less active.

• 公益社団法人 日本化学会の論文

著者

• Akamatsu Akira

  Division of Organic Chemistry Institute for Protein Research Osaka University

関連論文

• Studies on the Silk-Rhodium Catalyst

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