Composite carrier catalyst for preparing propylene by adopting propane conversion and preparation method of composite carrier catalyst

The invention discloses a composite carrier catalyst for preparing propylene by adopting propane conversion and a preparation method for the composite carrier catalyst. The catalyst is prepared from 50%-90% of Al-doped SBA-15 molecular sieves, 10%-40% of iota-Al2O3, 0.1%-0.6% of an active component, 0.1%-4.0% of modifiers and the balance adhesive. The modifier comprises a first modifier containingany one of Cu and Sn modified elements, a second modifier containing any one of La, Ce, Ag and Zr modified elements, and a third modifier containing any one of Sr, Ba, Ca and K modified elements, thecontent of each modifier is greater than 0%, and the mass percentage sum of all the components is 100%. The catalyst is good in intensity, and has good dehydrogenation activity and stability in the process of propane dehydrogenation. 本发明公开了种丙烷转化制丙烯的复合载体催化剂及其制备方法。所述催化剂包括以下组分：50％-90％的Al掺杂SBA-15分子筛，10％-40％的η-AlO，0.1％-0.6％的活性组分，0.1％-4.0％的改性剂，其余为粘结剂，所述改性剂包括含有选自Cu、Sn中任意种改性元素的第改性剂、含有选自La、Ce、Ag、Zr中任意种改性元素的第二改性剂、含有选自Sr、Ba、Ca、K中任意种