Temperature-programmed reduction and acidic properties of molybdenum supported on MgO–Al2O3 and their correlation with catalytic activity

Stability of supported and promoted-molybdenum carbide catalysts in dry-methane reforming

“…While a similar interaction was also found when MoO 3 was supported on MgO [24], the temperatures employed in our study were higher than in either of those two studies. Therefore, the low thermal stability of MgO as confirmed by the in situ XRD measurements and the low surface area of the spent sample could explain the low activity of the Mo 2 C/MgO catalysts in this study.…”

Effect of support modification on the characterization and catalytic activity of Mo/Al2O3 catalysts

“…This behavior suggests that the high selectivity to ringopening products observed for the Mo/alumina-chromia catalyst can be due to an exaltation of the MCH direct-opening activity and the higher capacity to open C 5 isomers. Thus, the methyl-cyclohexane conversion is shown to be structure-sensitive for chromium catalysts and was favored by the chromium particles agglomeration [48], in agreement with the low-surface-area and large crystallite size data.…”

Effect of support composition on hydrogenolysis of thiophene and Maya crude

“…865 8C may be due to the dispersed tetrahedral Mo species. However, the peak at 865 8C is only observed for the case of AM and AZ supported catalysts, which are comparatively more basic than AT, AS and PA catalysts, due to the stronger interaction between support and active metals [36,37]. The peaks at different temperatures for different catalyst indicated that the support plays an important role on the reduction of Mo species [8].…”