Zeolite ultra-small crystals

Naturally-produced zeolites often far surpass those made in the laboratory in terms of their large size and sheer beauty. However, the time-frame of nature s synthesis procedure is measured in millennia - clearly not an option for even the most patient scientist. Hence it is up to the scientist to use his ingenuity in creating methods to prepare ultra-large or ultra-small crystals in the laboratory. 

Excellent studies have been performed on the synthesis of ultra-small crystals of MFI-type zeolite [59,60]. In particular the preparation of suspensions of colloidal silicalite-1 crystals (less than 100 nm) with a narrow particle-size distribution have been extensively studied. 

Coker, E. N. and Jansen, J. C. (1998) Approaches for the synthesis of ultra-large and ultra-small zeolite crystals. In Molecular Sieves. (H. G. Karge and J. Weitkamp, eds.). Springer, Berlin Germany and New York, N.Y. pp. 121-155. 

Approaches for the Synthesis of Ultra-Large and Ultra-Small Zeolite Crystals... 

Table 1. Parameters which influence the growth of ultra-large and ultra-small zeolite crystals ...

Apart from the pore width and pore architecture, the crystal size of a zeolite is often very important. In Chapter 5, E.N. Coker and /. C. Jansen present a systematic evaluation of the attempts to synthesize either ultra-small (i.e.,... 

Coker EN, Jansen JC (1998) Approaches for the Synthesis of Ultra-Large and Ultra-Small Zeolite Crystals. 1 121-155... 

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