completing the computer model and performing the calculation in this way pure ammonium nitrate decomposes into n 2 h 2 and h 2 o all lower energy than an and the energy that is released increase the gas temperature i e in the box to 970 u00b0 c addition of other components to the system can now be explored to see their effect on the final system temperature for example a 1 1 mixture of an and sio2 will result in the final composition of n 2 h 2 h 2 o and sio 2 at 604 u00b0 c the lower temperature is due to the presence of the sio 2 as an inert material that absorbs some of the energy released from an decomposition the energy absorption can be enhanced if the stabilizer material itself is not inert but can react to change state and or degrade to form other compounds for example a 1 1 mixture of an with chalk caco3 gives a final composition n 2 h 2 h 2 o cao and co 2 at a temperature of 585 u00b0 c some of the an decomposition energy is used to convert chalk to lime cao and co 2 via the endothermic reaction caco 3 u2192 cao co 2 in some embodiments bauxite residue br is a mixture of inert materials sio 2 tio 2 fe 2 o 3 etc and components which may act as u201c energy absorbers u201d al oh 3 alooh fe 2 o 3 h 2 o etc the final system temperature for a 1 1 mixture of an br is 711 u00b0 c in addition to br a number of other materials were evaluated as energy absorbers the best performer i e at.