Its structure, which crystallizes in the space group Fd-3m (No. 227) with a = 73.0286(2) Å, V = 389474.4(2) Å3, exhibits a zeotype architecture with mesoporous cages of approx. 25 and 29 Å diameter, accessible through microporous windows of 5.5 and 8.9 Å diameter.
The zeolitic core-shell composite also showed an increasing selectivity towards 1-hexene over 1-heptene as the S-1 layers built up, even though both are linear alkenes with similar kinetic diameter that are accessible to the MFI framework.
Earlier work by Grethlein [ 16] showed a linear correlation between the initial hydrolysis rate of pretreated biomass and the pore size accessible to a molecule with a diameter of 5.1 nm, which is about the diameter of a 'representative' cellulase.
The analyses of the rock cores indicated that the largest pore diameters may be accessible to entry of the nonaqueous form of TCE.
An iterative approach was used in which all possible patches of surface-accessible residues of 16 Å diameter in one structure were compared with the equivalent residues in another structure.
Hence for a known distance, the bubble size, and more precisely the Sauter mean horizontal diameter of bubbles is accessible.
For example, determinants located in caveoli, invaginations with neck diameter <50 nm, are accessible to relatively small ligands such as antibodies but not to submicrometer carriers.
Immersion enthalpy revealed a sharp decrease in available area equivalent to a cut-off due to molecular exclusion when the accessible surface was assessed against probe kinetic diameter.
The simulation results showed that, H2S, NO, NO2, CO and NH3 are well-captured by zeolite structures with accessible surface area of 1600 1800 m2/g and pore diameter of 6.0 7.0 Å, such as AFY and PAU, while SO2 is well-adsorbed by zeolites containing larger accessible surface area (1700 2700 m2/g) and pore diameter (7.0 14.0 Å) at room temperature and an atmospheric pressure.
However, the method is invasive and limited to accessible tumours greater than 2 cm in diameter.
