Catalytic combustion of dimethyl ether over Ce-doped cryptomelane-type manganese oxide
Ce掺杂的OMS-2催化剂上二甲醚催化燃烧性能的研究

Manganese oxide octahedral molecular sieves(OMS-2) were synthesized by oxidizing MnSO4 with KMnO4 and then doped with Ce.The structure and oxidation activity of the catalysts were characterized by XRD,N2 adsorption-desorption,TEM,FT-IR,Uv-vis,O2-TPD,H2-TPR and XPS techniques.The catalytic activity for dimethyl ether(DME) combustion was also evaluated.The results showed that the highly-dispersed amorphous CeO2 exited when Ce-doping was low.However,the independent CeO2 formed when Ce-doping exceed 10%.XPS res...