摘要
应用IR、MS和EPR表征CuCl和NH4Y固态离子交换过程以及制备Cu（Ⅰ）Y的一些特性.固态离子交换程度依赖于反应温度.和还原Cu（Ⅱ）Y得到Cu（Ⅰ）Y的方法，固态离子交换是更为有效的制备纯Cu（Ⅰ）Y的方法．
The solid-state interaction between CuCl and NH4Y has been followed in situ by infrared and mass spectroscopy. Upon heat-treatment of the minture of CuCl / NH4Y, the protons in the β cages and supercages of the zeolites can be equally replaced by Cu(Ⅰ) cations of CuCl.The degree of the exchange increases with increasing the reaction temperatures, but levels off at a temperature higher than 420 ℃. Compare the infrarcd results of CO adsorption on Cu(Ⅰ) of Cu(Ⅰ)Y prepared by solid-state reaction with those on Cu(Ⅰ) of Cu(Ⅱ)Y obtained by auto-reduction at a high temperature in vacuo, the characteristics of Cu(Ⅰ) species in both of the zeolites are similar. Based on the EPR results of Cu(Ⅱ)Y reduced in CO at different temperatures, one could conclude that the solid-state ion exchange between CuCl and NH4Y is an effective method for the preparation of Cu(Ⅰ)Y zeolites.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1997年第9期822-826,共5页
Acta Physico-Chimica Sinica
