Na3AlH6

Na3AlH6, also known as sodium aluminum hydride, is a chemical compound consisting of sodium (Na), aluminum (Al), and hydrogen (H) atoms. It is classified as a complex hydride and is primarily studied for its potential applications in hydrogen storage due to its high hydrogen content.

The molecular composition of Na3AlH6 indicates that it contains three sodium atoms, one aluminum atom, and six hydrogen atoms per formula unit. It crystallizes in an orthorhombic structure and is typically synthesized through routes involving the reaction of sodium hydride (NaH) with aluminum hydride or related compounds under specific conditions.

Na3AlH6 is of interest in materials chemistry owing to its ability to release hydrogen upon thermal decomposition. The decomposition process generally occurs at elevated temperatures, resulting in the release of hydrogen gas and formation of sodium aluminate and elemental aluminum. This property makes it a candidate for solid-state hydrogen storage systems, although practical applications are limited by factors such as stability, weight, and reversibility of hydrogen absorption and desorption.

Research on Na3AlH6 is ongoing, focusing on understanding its structural properties, thermodynamics, and potential to improve hydrogen storage efficiency. Its handling requires inert atmospheres due to its reactive nature with moisture and oxygen, which can lead to hydrolysis or oxidation.

Overall, sodium aluminum hydride remains a subject of scientific interest within the broader context of metal hydrides and energy storage materials, although challenges in stability and reversibility need to be addressed before it can be developed for practical applications.