The Study of Dehydration from the Secondary Pore in USY Zeolite by the Positron Annihilation Pectroscopy
Zhu Jun, Wang Shao-Jie, Ma Li, Chen Zhi-Quan
Acta Phys. -Chim. Sin. . 1999, (11): 1053 -1056 .  DOI: 10.3866/PKU.WHXB19991119