Mesoporous (Ta, Nb)₃W₇ Modified with Stearic Acid Used as Solid Acids for Esterification

Table 1

Physicochemical properties of catalyst samples.

Catalyst	SSA; (m^2/g)	Average pore diameter; (nm)	Pore volume; (cm^3/g)	Crystal size; (nm)
Mesoporous Nb3W7 oxide (P-123)	73.09	8.34	0.11	11.18
Mesoporous Ta3W7 oxide (P-123)	64.09	5.1	0.07	10.02
Mesoporous Nb3W7 oxide (stearic acid, 1°C/min)	66.12	11.8	0.18	12.53
Mesoporous Ta3W7 oxide (stearic acid, 1°C/min)	107.49	7.33	0.16	11.88
Mesoporous Ta3W7 oxide (stearic acid, 4°C/min)	86.27	12.91	0.21	13.97