Nitridation has drawn much attention as a novel method to prepare solid base materials. In the present work, nitridation was employed to improve the basic property of BaO supported on mesoporous materials. Ba 2 SiO 4 and Ba 4 Si 6 O 16 basic species were formed after BaO loading on MCM-41 and SBA-15, respectively while only Ba 2 SiO 4 species were observed both on MCM-41 and SBA-15 after nitridation. Basic species, bridging –NH– groups, were introduced into the framework of BaO-MCM-41/SBA-15 by nitridation with the mesoporous structure preserved. The surface basic property of obtained samples was analyzed by IR spectra using CDCl 3 and CO 2 as probe molecules and XPS. The enhancement in the surface basicity was observed after nitridation. Compared with BaO-MCM-41/SBA-15, the N-incorporated materials with stronger basicity exhibited higher activities in Knoevenagel condensation and the conversion of 2-propanol.