摘要
Secondary pores are formed during hydrothermal treatment of NH<sub>4</sub>NaY accompanyingdealumination and production of extraframework aluminum. There exist different views onthe formation of secondary pores. Lohse suggested that the formation of secondarypores was due to partial structural breakdown resulting from dealumination of sodalite. ButYoshida reported that secondary pores would be formed after the Si（3Al） was
基金
Project supported by the National Natural Science Foundation of China.
