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Direct Synthesis of Ammonia from N-2 and H2O on Different Iron Species Supported on Carbon Nanotubes using a Gas-Phase Electrocatalytic Flow Reactor
Chen, Shiming1,2; Perathoner, Siglinda1; Ampelli, Claudio1; Wei, Hua1; Abate, Salvatore1; Zhang, Bingsen3; Centi, Gabriele4,5
Corresponding AuthorChen, Shiming(chenshiming@dicp.ac.cn) ; Perathoner, Siglinda(perathon@unime.it) ; Centi, Gabriele(centi@unime.it)
2020-05-13
Source PublicationCHEMELECTROCHEM
ISSN2196-0216
Volume7Issue:14Pages:11
AbstractGreen NH3 production by direct electrocatalytic synthesis from N-2 and H2O is still a challenging reaction, which requires us to better understand the nature of the active materials. We show here that iron oxide (Fe2O3) nanoparticles (supported over carbon nanotubes, CNTs) become more active than the corresponding samples after reduction to form Fe- or Fe2N-supported nanoparticles, both indicated as active species in the thermal catalytic reduction of N-2 to ammonia. Characterization data, however, indicate that even for these Fe- and Fe2N-CNT samples, obtained from Fe2O3-CNT by reduction in H-2 or NH3 at 500 degrees C, the active species responsible for N-2 reduction reaction (NRR) at low applied potential (-0.5 V vs RHE) are the same, that is, small (<1-2 nm) iron oxide nanoparticles that are not detected by XRD, but evidenced by XPS and which amount could be correlated to the rate of ammonia formation. This species is stable for at least 24 h of electrocatalytic flow tests. However, at higher applied potentials, sintering/transformation of this species occurs, with loss of the electrocatalytic activity, and Fe2N nanoparticles may also be reduced in situ, forming ammonia, but with irreversible deactivation.
Keywordnitrogen reduction ammonia direct synthesis iron-oxide supported on carbon nanotubes electrocatalysis active species
Funding OrganizationERC Synergy SCOPE ; PRIN 2017 MULTI-e project ; SINCHEM Grant ; Erasmus Mundus Action 1 Program
DOI10.1002/celc.202000514
Indexed BySCI
Language英语
Funding ProjectERC Synergy SCOPE[810182] ; PRIN 2017 MULTI-e project[20179337R7] ; SINCHEM Grant ; Erasmus Mundus Action 1 Program[FPA 2013-0037]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000531900400001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138819
Collection中国科学院金属研究所
Corresponding AuthorChen, Shiming; Perathoner, Siglinda; Centi, Gabriele
Affiliation1.Dept ChimBioFarAm, Vle F Stagno D'Alcontres 31, I-98166 Messina, Italy
2.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
3.Chinese Acad Sci IMR CAS, Inst Met Res, Catalysis & Mat Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.Univ Messina, Dept MIFT Ind Chem, ERIC Aisbl, Vle F Stagno D'Alcontres 31, I-98166 Messina, Italy
5.INSTM CASPE, Vle F Stagno D'Alcontres 31, I-98166 Messina, Italy
Recommended Citation
GB/T 7714
Chen, Shiming,Perathoner, Siglinda,Ampelli, Claudio,et al. Direct Synthesis of Ammonia from N-2 and H2O on Different Iron Species Supported on Carbon Nanotubes using a Gas-Phase Electrocatalytic Flow Reactor[J]. CHEMELECTROCHEM,2020,7(14):11.
APA Chen, Shiming.,Perathoner, Siglinda.,Ampelli, Claudio.,Wei, Hua.,Abate, Salvatore.,...&Centi, Gabriele.(2020).Direct Synthesis of Ammonia from N-2 and H2O on Different Iron Species Supported on Carbon Nanotubes using a Gas-Phase Electrocatalytic Flow Reactor.CHEMELECTROCHEM,7(14),11.
MLA Chen, Shiming,et al."Direct Synthesis of Ammonia from N-2 and H2O on Different Iron Species Supported on Carbon Nanotubes using a Gas-Phase Electrocatalytic Flow Reactor".CHEMELECTROCHEM 7.14(2020):11.
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