Appropriate quantities of CE were loaded onto the different types of
ash respectively bywet impregnationmethod [15]. Typically, in order to
prepare 10wt.% CaO loaded catalyst, 1 g of CE powderwas added slowly
to 50 mL ofwater to prepare aqueous solution of Ca(OH)2. This solution
was subsequently added to 9 g of dried RHA and mixed with constant
magnetic stirring at 500 rpm for 4 h. The solution was aged for 24 h
for formation of the Ca(OH)2 precipitate on RHA carrier. Excess water
was removed in the dry oven at 105 °C for 24 h. The powder was then
calcined in a muffle furnace to prepare the ash supported catalyst.