| Abstract: | The activities of a MnO/γ‐Al2O3 catalyst for the selective reduction of methyl benzoate to benzaldehyde have been studied in a continuous flow reactor. Characterization of the catalyst has been conducted by XRD, XPS, NH3‐TPD and TPD‐IR. XRD and XPS results revealed that the steady state catalyst is mainly MnO2/γ‐AlO3 before reduction and MnO/γ‐Al2O3 after reduction. Monolayer dispersion capacity obtained by XPS method is about w (Mn)11.3% TPD‐IR results revealed that there are only L acidic centers on the catalytic surface. NH3‐TPD determinations have verified that the catalyst with a certain number of moderate strength acidic sites is advantageous to hydrogenation of methyl benzoate to benzaldehyde. |
