Japanese cedar (Cryptomeria japonica) ash as a natural activating agent for preparing activated carbon

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 4 Porosity of AC prepared under various conditions

Sample identification code	S _BET (m²/g)	t-plot		V _tot (cm³/g)	V _mi/V _tot (%)	D (nm)
Sample identification code	S _BET (m²/g)	S _ex (m²/g)	V _mi (cm³/g)	V _tot (cm³/g)	V _mi/V _tot (%)	D (nm)
JC-0.33-750-1.0^a	835	128	0.33	0.41	80.6	1.95
JC-0.20-850-1.0	1061	318	0.34	0.52	66.0	1.96
JC-0.25-850-1.0	1242	463	0.36	0.62	57.8	2.00
JC-0.33-850-0.5	1103	202	0.42	0.53	78.9	1.92
JC-0.33-850-1.0	1430	707	0.33	0.74	44.1	2.08
JC-0.33-850-1.5	1148	317	0.38	0.56	68.4	1.95
JC-0.33-950-1.0	1345	631	0.33	0.68	48.0	2.01

S _BET specific surface area, S _ex external surface area, V _mi micropore volume, V _tot total pore volume, D average diameter of pore
^aSample identification code: ash (JC)–ash to water ratio–activation temperature–activation duration