摘要
磷酸硅铝分子筛(SAPO)是由SiO2、AlO2-、PO2+三种四面体单元构成的微孔型晶体,其孔结构可通过改变不同的合成条件及硅含量来控制。由于骨架呈负电性,具有可交换的阳离子,同时呈现出质子酸性,因此SAPO分子筛被广泛用作吸附剂、催化剂和催化剂载体,是一种具有优异择形选择性、热稳定性和湿热稳定性的新型催化材料。
Silicoalum inophosphate molecular sieves （SAPO） are microporous crystals with the structure of SiO2,AlO2^-,PO2^＋ tetrahedral units. SAPO has electronegative framework and exchangeable cation and Lewis acidity. SAPO is a novel class of catalytic materials with excellent shape-selectivity,thermal stability and hydrothermalstability.
出处
《浙江化工》
CAS
2005年第7期21-24,共4页
Zhejiang Chemical Industry
