Highly siliceous and aluminosilicate zeolites (MFI, MTN, SOD) were synthesized ionothermally.

Several tetraalkylammonium salt/alcohol based deep eutectic solvents (DESs) were employed in the syntheses.

Different DESs involving various organic SDAs and mineralizing agents yielded zeolites of different topologies.

The morphology, local T-site environment and crystallinity of a given zeolite may be controlled by judicious choice of DES.

The approach described in this work has the potential to produce unique zeolites with new framework topologies.