Cu-ZSM-5型分子筛的合成与结构表征

近年来，杂原子ZSM-5分子筛合成研究发展极为迅速，许多原子例如B、Ge、Fe等取代铝或佳而进入了分子筛骨架1-4]．特别是1986年Guth等人间报导在弱酸性体系氟离子存在下合成分子筛，为杂原子沸石分子筛的合成开辟了一条新途径．在碱性体系下，Ione等人6,7]报导过含铜ZSM-5的合成，但铜是否进入分子筛骨架，尚未给出确切的说明．在微酸性介质中合成Cu－ZSM-5还未见报导．本文在弱酸性介质氟离子存在下，应技合成出氨型Cu-ZSM-5分子筛，并运用XRD、IR、SEM、XPS等方法证明了铜进入了分子筛骨架．1实验1．1试剂白炭．t（SIO。，…

Study on the Synthesis and Structure of Cu-ZSM-5 Type Molecular Sieve

Cu-ZSM-5 type molecular sieves were synthesized hydrothermally in weak acid medium in the presence of F- ions. The structures of these samples were investigated.Increasing the amount of copper in synthesized samples the unit cell volumes of Cu-ZSM-5 zeolites increase, while the adsorption peaks of Cu-ZSM-5 shift to lower wavenumbers.These facts and the results of the electron probe micrograph and XPS analyese indicate that copper was introduced into the framework of molecular sieve.