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The modification effects of TiO_2 towards Cu or CuO in supportedCuO-ZnO/Al_2O_3-TiO_2 catalyst were studied by XPS,TPD and test reaction.XPS showed that TiO_2 additive improved the dispersity of CuO or Cu in cata-lyst.TPR showed that the reduction temperature(Tr)of CuO in CuO-ZnO/Al_2O_3-TiO_2 increased with the content of TiO_2.XPS showed that the Eb valueof Cu in TiO_2 containing catalyst(Eb=993.7 eV) was larger than that inTiO_2 free catalyst(Eb=932.9 eV).These indicate that TiO_2 displayed elec-tronic effect on catalyst.Both structural effect improving the dispersity of Cuand electronic effect weakening the bond strength of Cu-S in catalyst caused theS-resistance of CuO-ZnO /Al_2O_3-TiO_2 catalyst greatly improved.
The modification effects of TiO 2 towards Cu or CuO in supported CuO-ZnO / Al 2 O 3 -TiO 2 catalyst were studied by XPS, TPD and test reaction. XPS showed that TiO_2 additive improved the dispersity of CuO or Cu in cata-lyst. TPR showed that the reduction temperature (Tr) of CuO in CuO-ZnO / Al 2 O 3-TiO 2 increased with the content of TiO 2 .XPS showed that the Eb value of Cu in TiO 2 containing catalyst (Eb = 993.7 eV) was larger than that in TiO 2 free catalyst (Eb = 932.9 eV These indicate that TiO_2 displayed elec-tronic effect on catalyst. Both structural effect improving the dispersity of Cuand electronic effect weakening the bond strength of Cu-S in catalyst caused theS-resistance of CuO-ZnO / Al 2 O 3 -TiO 2 catalyst greatly improved.