Solid catalyst with core-shell catalytic phase and a method of preparation thereof

The present invention relates to a sold catalyst for manufacturing of a nitrile compound and a method of preparation thereof. More particularly, this invention relates to the solid catalyst expressed by the following formula (1): Bi_aA_aB_bQ_qO_x][(100-z) % D_dE_eFe_fNi_gMo_mO_y+z % SiO₂] comprising a core catalytic phase expressed by [(100-z) %=D_dE_eFe_fNi_gMo_mO_y+z % SiO₂] and a shell catalytic phase expressed by [Bi_nA_aB_bQ_qO_x], which increases a yield in the manufacturing of a nitrile compound via ammoxidation of olefin, and the method of preparation thereof.