[5]. Sincethere is no simpleorder-ingprincipleunderlyingtheanionpackinganapproachsuggestedby O’Keefeand Hyde[6] is used to describethe crystalstructure,whichis basedon the packingof cationswith the voidsbeeingfilledby anions.In Na2Mn2O3the cationsform an approximatecubicclosepackedarrangement.Thereare...
It is very interesting to observe another weight loss of 2.6% at 479 ◦C, which can be attributed to the carbonization and the formation of carbon layers on the surface of the Mn2O3 microspheres [31]. The TG-DTA results further verify that porous Mn2O3 materials can be generated by ...