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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