Table 4.

Structural and textural properties of NPs.

Sample	XRD		N2 Porosimetry
	d-Spacing	α 0	S BET	d p	V p
	(nm)	(nm)	(m2/g)	(nm)	(cc/g)
Si-NP	3.71	12.85	1312	2.5	2.82
SiCa-NP	4.96	17.18	650	4.1	5.24
SiCaCe1-NP	5.07	17.57	495	3.9	3.07
SiCaCe2.5-NP	5.32	18.42	495	3.9	3.68
SiCaCe5-NP	5.52	19.11	495	3.9	2.69