Kinetics of Phenanthrene Hydrogenation System over NiMo/Al2O3 Catalyst
1. Research Institute of Petroleum Processing, East China University of Science and Technology, Shanghai 200237, China 2. Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
Abstract Withphenanthrene andhydrogen as raw materials, the hydrogenation of phenanthrene was tested over NiMo/Al2O3 catalyst in the fixed-bed microreactors. Effects of temperature, reaction pressure and space velocity on the reaction were systematically investigated. Based on the equilibrium constants by the thermodynamic method and kinetic equation derived by the Langmuir-Hinshelwood-Hougen-Watson adsorption theory, the reaction rate constants, activation energy and adsorption constants were estimated by Broyden-Fletcher-Goldfarb-Shanno(BFGS) quasi-Newton scheme, and the different reaction networks were compared and screened. Under the reaction conditions of the study, the result showed that the reaction path from 9, 10-dihydrophenathrene to 1,10-octahydrophenanthrene was confirmed, and the path from 9, 10-dihydrophenathrene to tetrahydrophenathrene could not be excluded, and the fitting result of screened model was good.
