Hydrothermal synthesis of zeolites from residual waste generated via indirect carbonation of coal fly ash

Table 1 Molecular formulae of the synthesized zeolites calculated using the XRF results

Synthesized zeolite	Weight (%)			Molecular formula	Si/Al ratio
Synthesized zeolite	SiO₂	Al₂O₃	Na₂O	Molecular formula	Si/Al ratio
ZE-CFA-180	54	21	10	Na₆Al_7.9Si_16.9	2.1
ZE-HCl-180	49	24	12	Na₆Al_6.9Si_12.3	1.8
ZE-NH₄Cl-180	49	22	12	Na₆Al_7.1Si_13.3	1.9

ISSN: 2468-2039