Power law kinetic equation of the Fischer–Tropsch synthesis on cobalt catalyst

Rate data have been obtained for CO hydrogenation over co-precipitated well-characterized Co–Ce/SiO2 catalyst, studied in a fixed-bed micro reactor at the atmospheric pressure under the conditions of 473–573 K, H2/CO feed ratio (mol/mol) of 1 and 1.5, and space velocity in the range2700–5200 h-1. The kinetic parameters were estimated with non-linear regression method. The data were best fitted by a Langmuir–Hinshelwood–Hougen–Watson (LHHW) approach rate in the form of ( )2 1 CO CO H CO a P k P r+ − = 2 . Furthermore, the data were fitted fairly well by a power law equation in the form of 0.932 0.937 2 CO CO H r k P P − − = . The activation energies for LHHW approach model and power law equation were obtained 31.57 kJ/mol and 22.9 kJ/mol, respectively.

کلیدواژه ها:

Fischer–Tropsch synthesis ، Power Law Kinetic ، Cobalt Catalyst