The surface acidic properties of various trivalent hetero-atom containing H(M)ZSM-5 (M = Al, Ga, Fe, B) have been investigated by means of TPD and IR.

• 用IR,TPD技术研究了不同三价杂原子的H(M)ZSM-5(M=Al,Ga,Fe,B)的表面酸性质。