Structural and Morphological Features of Disperse Alumina Synthesized Using Aluminum Nitrate Nonahydrate

Table 2 Textural characteristics of samples heated at 350 °С (1), 480 °С (2), 850 °С (3), and 1100 °С (4)

Sample	S _BET(m²/g)	S _nano(m²/g)	S _meso(m²/g)	S _macro(m²/g)	V _p(cm³/g)	V _nano(cm³/g)	V _meso(cm³/g)	V _macro(cm³/g)	Δw	<R _V> (nm)	<R _S> (nm)	c _void	c _cyl
1	66	29	37	0	0.044	0.009	0.035	0	0.153	1.94	1.28	0.392	0.608
2	180	34	146	0	0.138	0.007	0.131	0	0.470	1.97	1.65	0.697	0.303
3	77	6	71	0	0.086	0.001	0.080	0.005	0.397	8.14	2.44	0.536	0.464
4	14	3	9	2	0.070	0.001	0.032	0.037	0.292	33.55	10.39	0.538	0.462

Note. \( <{R}_V>={\displaystyle \underset{R_{\min }}{\overset{R_{\max }}{\int }}R{f}_V(R)dR}/{\displaystyle \underset{R_{\min }}{\overset{R_{\max }}{\int }}{f}_V(R)dR} \); \( <{R}_S>={\displaystyle \underset{R_{\min }}{\overset{R_{\max }}{\int }}R{f}_S(R)dR}/{\displaystyle \underset{R_{\min }}{\overset{R_{\max }}{\int }}{f}_S(R)dR} \); c _void and c _cyl are the weight coefficients corresponding to contributions of voids between spherical particles and cylindrical pores in CV/SCR