Kinetic Study of Catalytic Esterification of Butyric Acid and Ethanol over Amberlyst 15

Table 1

Characteristics of the catalysts.

Property	Amberlyst 35	Amberlyst 15
Acidity (eq. H^+ kg^−1)	5.32	4.75
Surface area (m^2 g^−1)	34	42
Total exchange capacity (eq/kg)	5.20	4.70
Pore volume (cm^3 g^−1)	0.28	0.36
Mean pore diameter (Å)	329	343
Skeletal density (g cm^−3)	1.542	1.416