Abstract

1. The conversions of spiro[4,4]nonane at 450°, a hydrogen pressure of 30 atm, a space velocity of 0.3 h−1, and a molar ratio of hydrogen to hydrocarbon of 5∶1 in the presence of 0.5% platinum-alumina and 0.5% palladium-alumina catalysts have been investigated. 2. In the presence of the platinum-alumina catalyst, the main conversion product is o-methylethylbenzene (41% of the catalyzate). 3. In the presence of the palladium-alumina catalyst isomerization of the spiro[4,4]nonane took place with the formation of indan (68% in the catalyzate).

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