Formation of Mesoporous Materials from Silica Dissolved in Various NaOH Concentrations: Effect of pH and Ionic Strength

Table 2

Experimental conditions for the materials synthesized under various pH values and NaOH/SiO₂ ratios and their pore characteristics.

pH	Initial NaOH/SiO2	Contained NaCl/SiO2	Remained NaOH/SiO2	Pore volume (cm^3 g^−1)	BET surface area (m^2 g^−1)
10.8	0.5	0.08	0.42	0.66	863
10.7	0.5	0.16	0.34	0.51	673
10.5	0.5	0.24	0.26	0.76	915
10.4	0.5	0.26	0.24	0.73	840
10.2	0.5	0.32	0.18	0.56	718
11.1	1	0.32	0.68	0.22	437
10.7	1	0.48	0.52	0.58	949
10.5	1	0.56	0.44	0.73	975
10.4	1	0.64	0.36	0.67	845
10.2	1	0.72	0.28	0.66	780
11.1	2	1.2	0.8	0.24	394
11	2	1.28	0.72	0.15	254
10.7	2	1.36	0.64	0.6	892
10.6	2	1.44	0.56	0.76	992
10.5	2	1.48	0.52	0.65	837
10.3	2	1.6	0.4	0.59	748