How is uranium hydride prepared from uranium and hydrogen gas?

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Uranium hydride ( $U H_{3}$ ) is prepared by reacting uranium with hydrogen gas at a temperature of 300 °C (570 °F).1

This process is represented by the following chemical equation:

$2 U + 3 H_{2} \to 2 U H_{3}$

As a member of the actinoid family, uranium forms this nonstoichiometric, pyrophoric black powder, which serves as a useful chemical intermediate for the preparation of other uranium compounds.1