A new way was explored to hydrothermally synthesize analcime with high purity and crystallinity using silicon and aluminum powder as raw materials.The effect of crystallization time on the structure of final products and the maximum adsorption capacity of analcime for Pb2+ in aqueous solution were studied.The structure of the products was characterized by X-ray diffraction(XRD) and Fourier transform infrared spectrophotometry(FT-IR).The results showed that analcime was formed from amorphous aluminosilicates...