Modifying the hygroscopic property of La2O3 by Pr, Sm and Nd doping

Compared to La2O3 (20 h), La1.40Nd0.60O3, La1.40Sm0.60O3 and La1.40Pr0.60O3 take much more time to convert into hydroxide with conversion times of 100, 150 and 230 h respectively.135