An Energetic Study of the Templating Ability of Diquaternary Cations in Zeolite Synthesis

The efficacy of a template can be rationalized in terms of the energies of the host-template nonbonding interactions. This approach is used to investigate the relationship between zeolite products and the diquat template molecules in their synthesis. The systematic synthesis results, especially the diquat chain length dependence of the products, ZSM-23,ZSM - 50, NU - 87, and ZSM -12 are rationalized quantitatively.