Porous silica-based amorphous materials

Although micro- and not mesoporous but worth mentioning in any case is a new class of materials in this evolution series of porous silica-based hybrid materials, the so-called ZOLs (zeolites with organic group as lattice). As we will see, many studies in the past focused on the organic functionalization of amorphous silica porous... 

Amorphous silica is a versatile material that has been employed as a substrate in a number of important applications including catalysis and chromatography [1]. The popularity in use of porous silica is based upon several important properties including abundance in nature, thus cost effectiveness in production, large surface area, rigidity, and surface reactivity that allows for selective modification to impart desirable properties. The wide-spread utility of silica is demonstrated by a corresponding, voluminous amount of research aimed at elucidating the... 

Fig. 15.5 Shift of the voH stretching frequency (Avon) versus the zero-coverage adsorption enthalpy (—Aa H)q measured for NH3 on a variety of sUica-based materials (defective MFI-Silicalite and amorphous non-porous silica). Adapted from ref. [36] Fig. 6...

The use of polystyrene-based materials has also been investigated for porous carbon formation with the hard template method using amorphous silica gel, mesoporous alumina, and microporous zeolites as inorganic templates [90]. 

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