Fig. 1 shows a series of X-ray diffraction (XRD) patterns for the
products obtained by conventional heating for various times. It can
be seen that after hydrothermal synthesis by conventional heating
for 24 h at 190 C, binary mixtures of mordenite (Na8[Al8Si40O96]$
24H2O) crystals as major phase and P-type (Na8[Al8Si8O32]$16H2O)
zeolite crystals as minor phase were obtained. After hydrothermal