Zeolite is a hydrated porous alumina silicate mineral with a threedimensional framework structure that has many benefits. Zeolite can be synthesized with basic materials that contain a lot of silica and alumina, one of which is Maredan clay from Riau. Maredan clay has been synthesized into zeolite sodalite, but its crystallinity is still low < 50%. In this study, sodalite will be impregnat…