The unit-cell parameter of the reference sample, Y, was found to be 2.426(1) nm. The
micropore volume, Vmp, obtained from the Dubinin transformation was 0.36 cm3(liq)/g.
These results agree well with data found in the literature [8,13,21]. The Langmuir-specific
area was 1.03 3 103 m2/g zeolite (Table 2).