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. 2018 Apr 18;23(4):946. doi: 10.3390/molecules23040946

Figure 6.

Figure 6

Zeta potential curves as a function of pH for a physical mixture SiO2-Al2O3 with a molar ratio of 25:1 and for an amorphous zeolite mixture with silica to alumina ratio of 22 aiming for Beta zeolite structure, synthesized for 24 h. Conditions: 2 mg/mL, 25 °C.