Active Razor Shell CaO Catalyst Synthesis for Jatropha Methyl Ester Production via Optimized Two-Step Transesterification

Table 1

Factors and their uncoded levels.

Uncoded variable	Symbol	Levels
		−2	−1	0	1	2
Razor shell CaO catalyst loading (wt.%)		1	2	3	4	5
Methanol to oil ratio (mol./mol.%)		30	40	50	60	70
Reaction time (min)		60	90	120	150	180
Heating temperature (°C)		40	45	50	55	60
Stirring speed (rpm)		500	550	600	650	700