Hydrothermal Synthesis of SBA-15 Using Sodium Silicate Derived from Coal Gangue

Table 1

The components of coal gangue, silica slag, and prepared sodium silicate.

Components (wt.%)	SiO2	Al2O3	Fe2O3	K2O	TiO2
Coal gangue	32.35	57.79	3.37	2.77	1.15
Silica slag	80.49	8.37	0.53	1.14	2.31
Soluble sodium silicate	95.21	0.07	—	4.61	—