FeY zeolites were prepared by three different secondary synthetic methods. Samples were characterized with XRD, IR, ESR, MBS and XPS techniques. The results showed that more iron ions were inserted into the framework ...FeY zeolites were prepared by three different secondary synthetic methods. Samples were characterized with XRD, IR, ESR, MBS and XPS techniques. The results showed that more iron ions were inserted into the framework of zeolite when the sample was pretreated with (NH4)(2)SiF6 aqueous solution. The structure of such zeolites has obviously changed due to the iron ions inserted into the framework.展开更多
文摘FeY zeolites were prepared by three different secondary synthetic methods. Samples were characterized with XRD, IR, ESR, MBS and XPS techniques. The results showed that more iron ions were inserted into the framework of zeolite when the sample was pretreated with (NH4)(2)SiF6 aqueous solution. The structure of such zeolites has obviously changed due to the iron ions inserted into the framework.
基金the support from the National Natural Science Foundation of China(Nos. 20903048,20771046 and 21005031)the Fundamental Research Funds for the Central Universities(No. JUSRP30903)+1 种基金the Startup Foundation for Introduced Talents(Nos.20081789 and 20091207)the Science Foundation for Youth(Nos.2008LQN002 and 2009LQN11)