Hydrogen Isotope Separation at Exceptional High Temperature Using Unsaturated Organometallic Complex

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2024-12-23 DOI:10.1039/d4dt03018d

Taku Kitayama, Tamon Yamauchi, Kaiji Uchida, Shunya Tanaka, Ryojun Toyoda, Hiroaki Iguchi, Ryota Sakamoto, Hao Xue, Naoki Kishimoto, Takefumi Yoshida, Tomoya Uruga, Shin-ichiro Noro, Shinya Takaishi

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引用次数: 0

Abstract

A new approach for hydrogen isotope separation using an unsaturated organometallic complex was proposed. Adsorption measurements of [Mn(dppe)2(CO)(N2)](BArF24) (Mn-dppe) (dppe = 1,2-bis(diphenylphosphino)ethane, BArF24 = B[C6H3(3,5-CF3)2]4) using H2 and D2 revealed a significant difference in the adsorption enthalpy of H2/D2 at much higher room temperatures than in previous studies, with D2 molecules being more strongly adsorbed on unsaturated metal sites. Mixed gas adsorption isotherms were calculated at each temperature using IAST theory, and it was predicted that D2 uptake was much larger than H2 uptake. Column chromatographic separation using the difference in adsorption enthalpy indicated that deuterium could be concentrated, and DFT calculations suggest that this difference in adsorption force is due to the difference in vibrational potentials involved in metal-dihydrogen bonding. This study introduces a new separation approach that could enable hydrogen isotope separation in the ambient temperature range.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.