Open AccessDevelopment of new carbon supports for rhodium in the creation of benzene hydrogenation catalysts
Author(s) -
С. Р. Конуспаев,
Minavar Shaimardan,
A. Nurlan
Publication year - 2020
Publication title -
l.n. gumilev atyndaġy euraziâ u̇lttyk̦ universitetìnìn̦ habaršysy. himiâ, geografiâ, èkologiâ seriâsy
Language(s) - English
Resource type - Journals
eISSN - 2617-9962
pISSN - 2616-6771
DOI - 10.32523/2616-6771-2020-130-1-35-41
Subject(s) - catalysis , benzene , rhodium , toluene , activated carbon , hydrogen , carbon fibers , chemistry , scanning electron microscope , chemical engineering , nuclear chemistry , inorganic chemistry , materials science , organic chemistry , composite material , adsorption , composite number , engineering
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.