875940.fig.001
Figure 1: XRD pattern of samples synthesized with different concentration of sodium hydroxide. H-Halite, syn (PDF number 05-0628); A1-Zeolite A, [Na] (PDF number 39-0223), A2-Zeolite 4A (PDF number 43-0142); and A3-Zeolite A (PDF number 46-0564).