Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Phosphane, PH<jats:sub>3</jats:sub>—a highly pyrophoric and toxic gas—is frequently contaminated with H<jats:sub>2</jats:sub> and P<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub>, which makes its handling even more dangerous. The inexpensive metal–organic framework (MOF) magnesium formate, α‐[Mg(O<jats:sub>2</jats:sub>CH)<jats:sub>2</jats:sub>], can adsorb up to 10 wt % of PH<jats:sub>3</jats:sub>. The PH<jats:sub>3</jats:sub>‐loaded MOF, PH<jats:sub>3</jats:sub>@α‐[Mg(O<jats:sub>2</jats:sub>CH)<jats:sub>2</jats:sub>], is a non‐pyrophoric, recoverable material that even allows brief handling in air, thereby minimizing the hazards associated with the handling and transport of phosphane. α‐[Mg(O<jats:sub>2</jats:sub>CH)<jats:sub>2</jats:sub>] further plays a critical role in purifying PH<jats:sub>3</jats:sub> from H<jats:sub>2</jats:sub> and P<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub>: at 25 °C, H<jats:sub>2</jats:sub> passes through the MOF channels without adsorption, whereas PH<jats:sub>3</jats:sub> adsorbs readily and only slowly desorbs under a flow of inert gas (complete desorption time≈6 h). Diphosphane, P<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub>, is strongly adsorbed and trapped within the MOF for at least 4 months. P<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub>@α‐[Mg(O<jats:sub>2</jats:sub>CH)<jats:sub>2</jats:sub>] itself is not pyrophoric and is air‐ and light‐stable at room temperature.</jats:p>