Abstract A series of MoTe0.15V0.1PxOn catalysts supported on the SiC were prepared by incipient wetness impregnation. The addition of P to MoTe0.15V0.1On/SiC catalysts improved the catalytic performance of selective oxidation from propane to acrolein (ACR), and the catalyst showed highest selectivity (33.7%) and yield (10.7%) when x=0.05. The MoTe0.15V0.1PxOn/SiC catalysts have been characterized by XRD, H2-TPR, Raman, XPS and NH3-TPD. The results indicated that a little H3PMo12O40 heteropoly acid and (VO)2P2O7 formed and MoO3 phase lessened after addition of P. The addition of P promoted the active species dispersed, increased the acidity on the surface, as well as might make the redox process easier. These significant differences improved the activity and selectivity of ACR.
Received: 29 March 2011
Fund:This work was supported by the National Natural Science Foundation of China (No.20873123).
Wei Min Lu,E-mail address:email@example.com