Development of new carbon supports for rhodium in the creation of benzene hydrogenation catalysts

Abstract

In this article, the results of hydrogenation of benzene and toluene on rhodium catalysts supported on activated
carbons are presented by obtaining from rice husk (RSHAU) and apricot shell (AKAU) in ethanol and the temperature range
of 40 - 80 ◦ C hydrogen pressure of 20 - 100 atm. It is shown that the best carrier is AKAU, where the strength of the
starting material is preserved while RSHAU is volatile and difficult to separate from the reaction mass. The activity of the
Rh / AKAU catalyst is comparable to that of Rh supported on sibunite (Siberian carbon carrier) and birch activated carbon
(BAU), and on Rh / RSHAU the reaction rate is five times lower. The characteristics of the catalysts are studied by means of
Brunauer-Emmett-Teller (BET) and scanning electron microscope (SEM) methods. The composition of the catalyst, the kinetic
parameters of the process are determined the reaction order with respect to hydrogen and benzene, and the activation energy