. 2023 Jan 27;8(5):4727–4735. doi: 10.1021/acsomega.2c06712

Table 2. Textural Parameters: Total Specific (S_total), External (S_ext), and Pore Surface Areas (S_p) [m²/g]; pore width [Å] and f_c as VBS Parameter by Adsorption of N₂ Using BET, Chirife, and Lewicki Isotherms.

Parameter	Ni/Z	Ni/Z+500 °C	Ni/Z+NH₄⁺	Ni/Z+H⁺
S_total(BET)	7.2765	7.5815	6.8171	10.6051
Isotherm	Chirife	Lewicki	Lewicki	Chirife
S_total	10.9032	12.5203	10.8735	16.1661
S_ext	6.3219	8.5713	7.0076	9.7906
S_p/S_total [%]	63	52	56	60
f_c	0.0000	0.1240	0.1670	0.0440
Pore width [Å]	156.7	143.1	149.5	149.1

Table 2. Textural Parameters: Total Specific (Stotal), External (Sext), and Pore Surface Areas (Sp) [m2/g]; pore width [Å] and fc as VBS Parameter by Adsorption of N2 Using BET, Chirife, and Lewicki Isotherms.