An novel approach to synthesize layered material PLS-4

• A facile synthesis of the zeolitic precursor PLS-4 was reported.
• Layered products have been obtained, due to the hydrogen bonding of hydroxyl groups.
• Three new morphologies have been obtained.
• This is the first directed synthesis of Al-PLS-4 zeolitic precursor.

A novel synthetic route to the layered material PLS-4 has been developed using amorphous silica as the silica source and ethyldimethylethanolammonium fluoride as the organic structure-directing agent. This reaction can proceed under high concentration conditions utilizing quaternary ammonium fluoride salt rather than ammonium fluoride or hydrofluoric acid. By introducing aluminum, alkali metal and alkaline earth metal into the aforementioned system, three new morphologies have been obtained. Products were fully characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and nitrogen adsorption analyses.

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