Solid-State Investigation, Storage, and Separation of Pyrophoric PH3 and P2H4 with α-Mg Formate

Anna Widera; Debora Thöny; Marcel Aebli; Julius Jacob Oppenheim; Justin L. Andrews; Frederik Eiler; Michael Wörle; Hartmut Schönberg; Norbert Weferling; Mircea Dincǎ; Hansjörg Grützmacher

doi:10.1002/anie.202217534

Solid-State Investigation, Storage, and Separation of Pyrophoric PH₃ and P₂H₄ with α-Mg Formate

Anna Widera, Debora Thöny, Marcel Aebli, Julius Jacob Oppenheim, Justin L. Andrews, Frederik Eiler, Michael Wörle, Hartmut Schönberg, Norbert Weferling, Mircea Dincǎ, Hansjörg Grützmacher

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Phosphane, PH₃—a highly pyrophoric and toxic gas—is frequently contaminated with H₂ and P₂H₄, which makes its handling even more dangerous. The inexpensive metal–organic framework (MOF) magnesium formate, α-[Mg(O₂CH)₂], can adsorb up to 10 wt % of PH₃. The PH₃-loaded MOF, PH₃@α-[Mg(O₂CH)₂], 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(O₂CH)₂] further plays a critical role in purifying PH₃ from H₂ and P₂H₄: at 25 °C, H₂ passes through the MOF channels without adsorption, whereas PH₃ adsorbs readily and only slowly desorbs under a flow of inert gas (complete desorption time≈6 h). Diphosphane, P₂H₄, is strongly adsorbed and trapped within the MOF for at least 4 months. P₂H₄@α-[Mg(O₂CH)₂] itself is not pyrophoric and is air- and light-stable at room temperature.

Original language	English (US)
Article number	e202217534
Journal	Angewandte Chemie - International Edition
Volume	62
Issue number	13
DOIs	https://doi.org/10.1002/anie.202217534
State	Published - Mar 20 2023
Externally published	Yes

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

Keywords

Gas Purification
Gas Storage
MOF Chemistry
Phosphane
Single Crystal Analysis

Access to Document

10.1002/anie.202217534

Cite this

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title = "Solid-State Investigation, Storage, and Separation of Pyrophoric PH3 and P2H4 with α-Mg Formate",

abstract = "Phosphane, PH3—a highly pyrophoric and toxic gas—is frequently contaminated with H2 and P2H4, which makes its handling even more dangerous. The inexpensive metal–organic framework (MOF) magnesium formate, α-[Mg(O2CH)2], can adsorb up to 10 wt % of PH3. The PH3-loaded MOF, PH3@α-[Mg(O2CH)2], 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(O2CH)2] further plays a critical role in purifying PH3 from H2 and P2H4: at 25 °C, H2 passes through the MOF channels without adsorption, whereas PH3 adsorbs readily and only slowly desorbs under a flow of inert gas (complete desorption time≈6 h). Diphosphane, P2H4, is strongly adsorbed and trapped within the MOF for at least 4 months. P2H4@α-[Mg(O2CH)2] itself is not pyrophoric and is air- and light-stable at room temperature.",

keywords = "Gas Purification, Gas Storage, MOF Chemistry, Phosphane, Single Crystal Analysis",

author = "Anna Widera and Debora Th{\"o}ny and Marcel Aebli and Oppenheim, {Julius Jacob} and Andrews, {Justin L.} and Frederik Eiler and Michael W{\"o}rle and Hartmut Sch{\"o}nberg and Norbert Weferling and Mircea Dincǎ and Hansj{\"o}rg Gr{\"u}tzmacher",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.",

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T1 - Solid-State Investigation, Storage, and Separation of Pyrophoric PH3 and P2H4 with α-Mg Formate

AU - Widera, Anna

AU - Thöny, Debora

AU - Aebli, Marcel

AU - Oppenheim, Julius Jacob

AU - Andrews, Justin L.

AU - Eiler, Frederik

AU - Wörle, Michael

AU - Schönberg, Hartmut

AU - Weferling, Norbert

AU - Dincǎ, Mircea

AU - Grützmacher, Hansjörg

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KW - Gas Purification

KW - Gas Storage

KW - MOF Chemistry

KW - Phosphane

KW - Single Crystal Analysis

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