Quantitative relationship model between support properties and dibenzothiophene hydrodesulfurization conversion over NiMo/Al2O3

A “property index” has been developed, which is a supergeometric average of the support properties. Based on the relationship between the catalytic reaction conversion and the apparent rate coefficient (k), a quantitative relationship model was established between the support properties and the conversion of dibenzothiophene (DBT) hydrodesulfurization (HDS) reaction by building a correlation between “property index” and the apparent rate coefficient. Moreover, an analysis method about the contribution rate of the property variables to catalytic activity was provided. The model parameters were estimated by fitting a series of the experimental data of the DBT HDS conversion over the catalysts with different support properties. Finally it has been shown that for the proposed model, the total average relative deviation was 1.43% and the prediction deviation was 2.21%.