A series of MoTe_（0.15）V_（0.1）P_xO_n catalysts supported on the SiC were prepared by incipient wetness impregnation.The addition of P to MoTe_（0.15）V_（0.1）O_n/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 MoTe_（0.15）V_（0.1）P_xO_n/SiC catalysts have been characterized by XRD,H_2-TPR,Raman,XPS and NH_3-TPD.The results indicated that a little H_3PMo_（12）O_（40） heteropoly acid and（VO）_2P_2O_7 formed and MoO_3 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.
