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Faujasite (FAU) and Linde Type A (LTA) are industrially important aluminosilicates extensively used in catalysis, adsorption and ion exchange processes [1-4]. The basic building unit of these materials is the sodalite cage (or β cage). Structurally, the basic difference between LTA and FAU is the way the β cages are connected. In LTA, the β cages are linked via oxygen bridges by double fourmembered rings (D4R), forming α cages [5] with small pores of approximately 4.1 Å [6]. In FAU, the β cages are linked to one another by double six-membered rings (D6R), forming the so-called ‘supercage’ [5] with pores of approximately 7.4 Å [6]. Due to their structural similarity, synthesis conditions such as aging time, crystallization time, crystallization temperature, composition of the synthesis gel and type of structure-directing agent must be carefully laid down. A small variation of these conditions can lead to the formation of mixed (LTA+FAU) or unwanted phases. LTA is usually synthesized in the presence of tetramethylammonium cation (TMA+) [7, 8] or without a structure-directing agent (SDA) [9-14], although other surfactants are also employed [15]. In the case of FAU, the use of TMA+ [12, 16, 17] and crown ether [18] are reported, although the structure can also be obtained without structure-directing agent [14, 19, 20]. Cetyltrimethylammonium bromide (CTAB) seems to be a promising structure-directing agent for the synthesis of zeolites. It has been successfully used to synthesize hierarchical LTA structures [21], to recrystallize zeolite Y and generate mesoporosity within the zeolite crystals [22] and to control both the size and morphology of LTA nanocrystals [23]. The cetyltrimethylammonium cation (CTA) was also used to synthesize siliceous MFI-type zeolite [24, 25]. Selection between LTA or FAU phases by manipulating the synthesis gel composition, crystallization time and temperature