Conclusions
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1.
The hydrogenation of benzene by high-pressure H2 on 5% Re/γ-Al2O3 and Re/SiO2 catalysts which have been reduced by the reaction mixture is zeroth order with respect to the benzene.
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2.
The kinetics of the hydrogenation of benzene on the 5% Re/γ-Al2O3 catalyst is not affected by the type of Re7+ compound used for preparing the catalyst. The reaction order with respect to H2 is approximately 2, and the apparent activation energy 10–11 kcal/mole.
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3.
Passage from Re7+ to Re(0) is apparently a necessary condition for the activation of supported Re catalysts. The supported Re7+ can be effectively reduced by the C6H6-H2 mixture at 200°C.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2704–2711, December, 1978.
The authors would like to thank G. A. Ashavskaya who made the x-ray measurements and A. M. Rubinshtein who participated in a discussion of the results obtained here.
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Minachev, K.M., Avaev, V.I., Shpiro, E.S. et al. Catalytic properties and state of rhenium in supported catalysts for the hydrogenation of benzene. Russ Chem Bull 27, 2413–2419 (1978). https://doi.org/10.1007/BF00941087
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DOI: https://doi.org/10.1007/BF00941087