Zeolite synthesis results for the use of a family of
related quaternary ammonium derivatives of tricyclodecane
hydrocarbons as structure-directing agents are described. The work
continues our interest in how rigid polycyclic
hydrocarbons, as charged derivatives, occupy space in developing
guest/host zeolite lattices. The zeolite product
chemistry was probed as to the three-dimensional structures formed,
particularly in relation to synthesis variables
like boron substitution for silicon in the lattice,
OH-/SiO2 reactant concentration, and the
stereochemistry of the
polar substituents off the
tricyclo[5.2.1.02.6]decane hydrocarbon frame;
all three factors were found to have an impact
on the zeolites which crystallized. Some correlations were also
studied for how these factors influenced the size and
architecture of the resulting pore systems. Monte Carlo methods
were also applied to calculate favorable docking
energies for geometry-optimized organo-cations placed in the host
lattices.
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