Potential Activity Evaluation of Phosphorus on CoMo/Al2O3-TiO2 Catalysts to Co-Processing Model

Abstract

The Co-Processing Model consist of the hydrodeoxygenation (HDO) of guaiacol compound was represented of bio-oil model and the hydrodenitrogenation (HDN) of quinolone compound was represented petroleum model, were investigated in tetralin at 300 °C under pressure of hydrogen 50 bar with the CoMoP sulfided supported on Al2O3-TiO2 catalyst and without phosphorus (P), the potential activity evaluation was compared with commercial catalysts. The liquid products after reaction were characterized by GC/MS. The CMAT, 0.5PCMAT and 1PCMAT catalysts proved to be effective for hydrodeoxygenation of guaiacol leading to significantly increased percentage of HDO, there are presence the %HDO as 57.93, 58.33 and 58.94 respectively, whereas the commercial catalysts showed the % HDO in range as 28-30%, while 2PCMAT catalysts showed the activity was less in HDO of guaiacol than other synthesized catalysts but showed high activity more than the commercial catalysts. Additionally, the HDN activity of CMAT catalyst showed that were improved, especially the phosphorus adding to CMAT present were high activity, due to the effects of the phosphorus as the catalyst promoter result to change of their morphologies and increase in Mo dispersion and increase in stacking of MoS2 crystallites, involve the formation of new acid sites on the catalyst surface.