Magnesium Hydridehydride ($\ce{MgH2}$)$(\ce{MgH2})$ is a metal hydride with a (relatively)relatively stable structure, at least compared to other metal hydrides. Magnesium Hydridehydride splits at around 300 °C °C into Magnesium ($\ce{Mg}$)magnesium and Hydrogen ($\ce{H2}$), but thishydrogen. The decomposition temperature can be reduced by addinghalved with a catalyst, which can half the temperature needed to decompose.
Unfortunately, these catalysts are often Titaniumtitanium-based (example A and example B), which does not make this a realistic way to reduce the temperature required, at least not if made for wide-spread production, as Titaniumtitanium is a rare and expensive metal.
As a result I askWhat catalysts are proven and effective at reducing the temperature required to break magnesium hydride, what catalysts are proven and effective at reducing the temperature required to break Magnesium Hydride, that don't include Titanium?that don't include titanium?