Zeolite synthesis from clay minerals offers potential for production of efficient, low cost microporous material for use as ion exchangers, molecular sieves, sorbents and catalysts. Most synthetic zeolites are produced from sodium alumosilicate gels, which is expensive method. Clay minerals as a source of both aluminium and silicon offers cheaper alternatives for raw materials that can be used for zeolite synthesis using different alkaline treatment methods (Mezni et al., 2011). This study investigates possibility of producing zeolites form natural illite clays using alkali activation with concentrated NaOH solutions and incorporating different thermal processes for zeolite synthesis.