Ru xPt ySn z cluster-derived nanoparticle catalysts: Spectroscopic investigation into the nature of active multinuclear single sites

Maela Manzoli; Vasudev N. Shetti; Jonathan A.L. Blaine; Lei Zhu; Derek Isrow; Veeranna Yempally; Burjor Captain; Salvatore Coluccia; Robert Raja; Enrica Gianotti

doi:10.1039/c1dt11243k

Ru _xPt _ySn _z cluster-derived nanoparticle catalysts: Spectroscopic investigation into the nature of active multinuclear single sites

Maela Manzoli, Vasudev N. Shetti, Jonathan A.L. Blaine, Lei Zhu, Derek Isrow, Veeranna Yempally, Burjor Captain, Salvatore Coluccia, Robert Raja, Enrica Gianotti

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

Cluster-derived Ru _xPt _ySn _z nanoparticles are active catalysts in the hydrogenation of nitrobenzene. The nature of the active sites has been elucidated by FTIR spectroscopy using CO and NO as probe molecules. A new metal carbonyl cluster precursor, Pt ₂Ru ₂(SnBu ^t ₃) ₂(CO) ₉(μ-H) ₂, has been synthesized to obtain a Ru ₂Pt ₂Sn ₂/SiO ₂ catalyst, that displayed remarkably high levels of conversion and selectivities compared to other bi-and monometallic analogues. Spectroscopic comparisons with Ru ₅PtSn/ SiO ₂ indicate that both the nature and the stoichiometry of the metals play a key role in modulating the catalytic activities and selectivities. A multinuclear single-site containing Pt centers, which facilitate the hydrogen activation, coupled with a highly reactive Ru site, possibly involved in the nitrobenzene activation, can be hypothesized. The oxophilicity of tin helps with the anchoring of the nanoparticles, aids the dispersion of the other metals, and can play an important role in influencing the selectivity to aniline.

Lingua originale	Inglese
pagine (da-a)	982-989
Numero di pagine	8
Rivista	Dalton Transactions
Volume	41
Numero di pubblicazione	3
DOI	https://doi.org/10.1039/c1dt11243k
Stato di pubblicazione	Pubblicato - 21 gen 2012
Pubblicato esternamente	Sì

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@article{9b1251fe19ec48e9af7799e5583d9aae,

title = "Ru xPt ySn z cluster-derived nanoparticle catalysts: Spectroscopic investigation into the nature of active multinuclear single sites",

abstract = "Cluster-derived Ru xPt ySn z nanoparticles are active catalysts in the hydrogenation of nitrobenzene. The nature of the active sites has been elucidated by FTIR spectroscopy using CO and NO as probe molecules. A new metal carbonyl cluster precursor, Pt 2Ru 2(SnBu t 3) 2(CO) 9(μ-H) 2, has been synthesized to obtain a Ru 2Pt 2Sn 2/SiO 2 catalyst, that displayed remarkably high levels of conversion and selectivities compared to other bi-and monometallic analogues. Spectroscopic comparisons with Ru 5PtSn/ SiO 2 indicate that both the nature and the stoichiometry of the metals play a key role in modulating the catalytic activities and selectivities. A multinuclear single-site containing Pt centers, which facilitate the hydrogen activation, coupled with a highly reactive Ru site, possibly involved in the nitrobenzene activation, can be hypothesized. The oxophilicity of tin helps with the anchoring of the nanoparticles, aids the dispersion of the other metals, and can play an important role in influencing the selectivity to aniline.",

author = "Maela Manzoli and Shetti, {Vasudev N.} and Blaine, {Jonathan A.L.} and Lei Zhu and Derek Isrow and Veeranna Yempally and Burjor Captain and Salvatore Coluccia and Robert Raja and Enrica Gianotti",

year = "2012",

month = jan,

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doi = "10.1039/c1dt11243k",

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journal = "Dalton Transactions",

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T1 - Ru xPt ySn z cluster-derived nanoparticle catalysts

T2 - Spectroscopic investigation into the nature of active multinuclear single sites

AU - Manzoli, Maela

AU - Shetti, Vasudev N.

AU - Blaine, Jonathan A.L.

AU - Zhu, Lei

AU - Isrow, Derek

AU - Yempally, Veeranna

AU - Captain, Burjor

AU - Coluccia, Salvatore

AU - Raja, Robert

AU - Gianotti, Enrica

PY - 2012/1/21

Y1 - 2012/1/21

N2 - Cluster-derived Ru xPt ySn z nanoparticles are active catalysts in the hydrogenation of nitrobenzene. The nature of the active sites has been elucidated by FTIR spectroscopy using CO and NO as probe molecules. A new metal carbonyl cluster precursor, Pt 2Ru 2(SnBu t 3) 2(CO) 9(μ-H) 2, has been synthesized to obtain a Ru 2Pt 2Sn 2/SiO 2 catalyst, that displayed remarkably high levels of conversion and selectivities compared to other bi-and monometallic analogues. Spectroscopic comparisons with Ru 5PtSn/ SiO 2 indicate that both the nature and the stoichiometry of the metals play a key role in modulating the catalytic activities and selectivities. A multinuclear single-site containing Pt centers, which facilitate the hydrogen activation, coupled with a highly reactive Ru site, possibly involved in the nitrobenzene activation, can be hypothesized. The oxophilicity of tin helps with the anchoring of the nanoparticles, aids the dispersion of the other metals, and can play an important role in influencing the selectivity to aniline.

AB - Cluster-derived Ru xPt ySn z nanoparticles are active catalysts in the hydrogenation of nitrobenzene. The nature of the active sites has been elucidated by FTIR spectroscopy using CO and NO as probe molecules. A new metal carbonyl cluster precursor, Pt 2Ru 2(SnBu t 3) 2(CO) 9(μ-H) 2, has been synthesized to obtain a Ru 2Pt 2Sn 2/SiO 2 catalyst, that displayed remarkably high levels of conversion and selectivities compared to other bi-and monometallic analogues. Spectroscopic comparisons with Ru 5PtSn/ SiO 2 indicate that both the nature and the stoichiometry of the metals play a key role in modulating the catalytic activities and selectivities. A multinuclear single-site containing Pt centers, which facilitate the hydrogen activation, coupled with a highly reactive Ru site, possibly involved in the nitrobenzene activation, can be hypothesized. The oxophilicity of tin helps with the anchoring of the nanoparticles, aids the dispersion of the other metals, and can play an important role in influencing the selectivity to aniline.

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DO - 10.1039/c1dt11243k

M3 - Article

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JF - Dalton Transactions

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