Offretite, tetramethylammonium

Al4K2NNa03 6Si,4C4H,2 7H2O, Offretite, tetramethylammonium substituted,... 

Synthesis methods are described below for four very different but important zeolite structures, A,2 Y,3 tetramethylammonium (TMA) offretite4 and tetra-propylammonium (TPA) ZSM-5.5,6 These four were selected because they span the composition range from 1 1 Si Al to a potentially aluminum-free zeolite structure (A to ZSM-5). In addition, these syntheses provide examples of fundamental concepts in crystallization such as templating (TMA offretite and ZSM-5), low-temperature nucleation (Y), and variable reactant (silica) sources. 

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