The invention relates to a process for synthesis of lamellar solids based on silicates comprising: i) a mixing stage, during which a mixture that comprises an alkaline metal, a silica source, water and an organic structuring agent is prepared, and ii) a crystallization stage during which this mixture is kept under conditions allowing the formation of a crystalline solid. The organic structuring agent that is used in this process comprises an alcohol group and an amine group that are separated by a hydrocarbon chain.