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Radiocatalytic ammonia synthesis from nitrogen and water

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The development of alternative methods to the Haber-Bosch process for ammonia(NH3)synthesis is a pressing and formidable challenge.Nuclear energy represents a low-carbon,efficient and stable source of power.The harnessing of nuclear energy to drive nitrogen(N2)reduction not only allows'green'NH3 synthesis,but also offers the potential for the storage of nuclear energy as a readily transportable zero-carbon fuel.Herein,we explore radiocatalytic N2 fixation to NH3 induced by γ-ray radiation.Hydrated electrons(e-aq)that are generated from water radiolysis enable N2 reduction to produce NH3.Ru-based catalysts synthesized by using γ-ray radiation with excellent radiation stability substantially improve NH3 production in which the B5 sites of Ru particles may play an important role in the activation of N2.By benefitting from the remarkable penetrating power of γ-ray radiation,radiocatalytic NH3 synthesis can proceed in an autoclave under appropriate pressure conditions,resulting in an NH3 concentration of≤5.1 mM.The energy conversion efficiency of the reaction is as high as 563.7 mgNH3.MJ-1.This radiocatalytic chemistry broadens the research scope of catalytic N2 fixation while offering promising opportunities for converting nuclear energy into chemical energy.

radiocatalysisγ-rayradiationN2 reductionNH3 synthesisRu-based catalysts

Bo-Shuai Mu、Yang Xu、Zhiyu Tu、Yugang Zhang、Weiqiu Liang、Jiahao Li、Xianglin Wang、Siyong Shen、Junyi Chen、Zhibo Liu

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Beijing National Laboratory for Molecular Sciences,Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science,Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China

Peking University-Tsinghua University Center for Life Sciences,Peking University,Beijing 100871,China

Changping Laboratory,Beijing 102206,China

Key Laboratory of Carcinogenesis and Translational Research(Mini

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2024

10.1093/nsr/nwae302

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年,卷(期)：2024.11(11)