The crystallite size of binary oxide of CaOeLa2O3 catalysts was
calculated by the DebyeeScherrer equation based on the highest
intensity reflection peak of CaO and La2O3 (Table 2). The results
showed that the crystallite size for both CaO and La2O3 phase in the
mixed metal oxides with different ratio varied suggesting presence
of interaction between the Ca and La species which helped in Ca
dispersion. The series of CaOeLa2O3 catalysts have low specific
surface area ranges from 7.73 to 14.27 m2/g and the result was in
agreement with crystallite size of the catalysts. The big aggregation
concomitantly with large particle size resulted in low surface area
of the catalysts.