AlPO_4-5是一种新型多孔磷铝分子筛晶体.由于骨架中不存在SiO_4四面体,PO_4~+AlO_4~-四面体交替排列,骨架呈电中性。Lok等首先报道了磷酸硅铝分子筛(SAPO)的合成.目前已有十几种元素同晶取代的AlPO_4-5分子筛.由于同晶取代,使得电中性的AlPO_4-5分子筛骨架呈电性和离子交换性,加之骨架本身所具有的良好热稳定性和多 AlPO_4-5 is a new type of porous aluminophosphate molecular sieve, which is electrically neutral due to the absence of SiO_4 tetrahedra in the framework and the alternating arrangement of PO_4 ~ + AlO_4 ~ - tetrahedra. Lok et al. First reported the synthesis of silicoaluminophosphate molecular sieve (SAPO) .At present, there are more than a dozen kinds of isomorphously substituted AlPO_4-5 molecular sieves. Due to the isomorphous substitution, the electrically neutral AlPO_4-5 molecular sieve framework is electrically and Ion exchange, combined with the skeleton itself has good thermal stability and more