Page 137 - Materials Chemistry, Second Edition
P. 137
124 2 Solid-State Chemistry
Figure 2.88. Mechanism of template-directed crystal growth for the synthesis of a zeolite. Reproduced
with permission from J. Phys. Chem. 1994, 98, 4647. Copyright 1994 American Chemical Society.
on the reactants used and the experimental conditions (i.e., temperature, time, and
pH). Particularly important is the presence of a templating ion, which directs the 3-D
structure of the aluminosilicate lattice (Figure 2.88). In alkaline media, an organic
ammonium cation is used (e.g., propylammonium); neutral framework zeolites such
