Crystallinity spacing

If a gas molecule strikes an empty space on the elementary crystalline space lattice it condenses and is held for a period of time (t) on the surface before it evaporates. This period of time between condensation and evaporation or the mean life of the molecule on the surface may vary from a small fraction of a second to an almost indefinite period. In those cases where the strength of union between adsorbate and adsorbing agent is weak and where the adsorbed molecule readily receives sufficient kinetic energy from shocks, provided by bombarding gas molecules and pulses from the solid adsorbate, to equal the latent heat of evaporation. 

But Mobil s work continued, and led to a monumental discovery. Our scientists showed that catalytic action could take place within the crystalline spaces of zeolites. This discovery upset the old belief that only amorphous structures... 

Along the way Rutherford explored the radiation emanating from the radioactive elements in the course of their transmutation. He demonstrated that beta radiation consisted of high-energy electrons similar in all respects to cathode rays. He suspected, and later in England conclusively proved, that alpha particles were positively charged helium atoms ejected during radioactive decay. Helium is found captured in the crystalline spaces of uranium and thorium ores now he knew why. 

Diffusion in the macropore space (inter-crystalline space)... 

The translational and orientational degrees of freedom can be treated separately (this follows from fundamentals of group theory which states that groups of translations and rotations are subgroups of the crystalline space groups P r, Q) = P(r) x P(0). Here x is a symbol of the group product. In particular case of the isotropic liquid or nematic phase (no positional order) f (r, Q) = pf (Q) where p = constant is density. 

Still, beside the Bravais lattices presented in the Chapter 2 of the presented volume, the crystalline space can be homogeneously partitioned... 

Fig. A.2. Two phase-layer system representative for a semicrystalline polymer. Electron density distribution Ce(z) — (ce) and the associated one-dimensional correlation function K z) for a perfectly ordered system (a). Effects of varying inter-crystalline spacings (b), varying crystallite thicknesses (c) and diffuse interfaces (d)...

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