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Table 2 TPD-CO 2 profile of synthesized base catalysts

From: Heterogeneous base catalysts for edible palm and non-edible Jatropha-based biodiesel production

  Amount of basic site (μ mol of CO2/g) Total basicity
Catalyst Tmax(<300°C) Tmax(300–500°C) Tmax(>500°C) (μ mol of CO2/g)
Alkali supported alumina
NaOH/Al2O3 - - 467.68 467.68
Alkaline-earth metal oxide
MgO 31.36 - 18.95 50.31
CaO - - 290.42 290.42
SrO - - 396.56 396.56
Calcium-based mixed oxide
CaMgO 2.68 - 449.70 452.38
CaZnO - - 412.70 412.70