Surface organometallic approach to the process of formation of bimetallic particles from bimetallic supported molecular clusters

L. Huang; A. Choplin; J. M. Basset; V. Siriwardane; S. G. Shore; R. Mathieu

doi:10.1016/0304-5102(89)80168-3

Surface organometallic approach to the process of formation of bimetallic particles from bimetallic supported molecular clusters

L. Huang^*, A. Choplin, J. M. Basset, V. Siriwardane, S. G. Shore, R. Mathieu

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

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Abstract

The reaction of the mixed hydrido-carbonyl clusters H₂FeM₃(CO)₁₃ (M = Ru, Os) and HFeCo₃(CO)₁₂ with the surface of hydroxylated magnesia leads to the grafted anionic clusters [HFeM₃CO)₁₃]^-, (M = Ru, Os) and [FeCo₃(CO)₁₂]^-, the cation being an Mg²⁺ ion from the surface. The reactivity of the mixed anions at the surface of magnesia has been followed in vacuo, and in the presence of CO and H₂, in order to understand the chemical processes which occur during the transformation of the mixed metal clusters into mixed metal particles. In vacuo, the anionic clusters [HFeM₃(CO)₁₃]^- fragment into Fe²⁺ and [HM₃(CO)₁₁]^- (M = Ru, Os), whereas [FeCo₃(CO)₁₂]^- fragments to Fe²⁺ and [Co(CO)₄]^-. Under CO, the anionic cluster [HFeRu₃(CO)₁₃]^- fragments to Fe(CO)₅ and [HRu₃(CO)₁₁]^- which further decomposes to ruthenium metal; the anionic cluster [HFeOs₃(CO)₁₃]^- fragments to Fe(CO)₅ and [HOs₃(CO)₁₁]^- which produces the decacarbonyl cluster [Os₁₀C(CO)₂₄]^-, which is extremely stable on the surface. The anionic cluster [FeCo₃(CO)₁₂]^- fragments to Fe(CO)₅ and [Co(CO)₄]^-, which is stabilized by surface cations. Under H₂, the three mixed metal clusters decompose into mixed metal particles having the same composition as that of the starting cluster.

Original language	English (US)
Pages (from-to)	1-19
Number of pages	19
Journal	Journal of molecular catalysis
Volume	56
Issue number	1 -3 pt 2
DOIs	https://doi.org/10.1016/0304-5102(89)80168-3
State	Published - Jan 1 1989
Externally published	Yes
Event	Sixth International Symposium on Relations between Homogeneous and Heterogeneous Catalysis, Part 2 - Pisa, Italy Duration: Sep 25 1989 → Sep 29 1989

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General Engineering

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10.1016/0304-5102(89)80168-3

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@article{29b7754f3ae143b39bba027eaae779a2,

title = "Surface organometallic approach to the process of formation of bimetallic particles from bimetallic supported molecular clusters",

abstract = "The reaction of the mixed hydrido-carbonyl clusters H2FeM3(CO)13 (M = Ru, Os) and HFeCo3(CO)12 with the surface of hydroxylated magnesia leads to the grafted anionic clusters [HFeM3CO)13]-, (M = Ru, Os) and [FeCo3(CO)12]-, the cation being an Mg2+ ion from the surface. The reactivity of the mixed anions at the surface of magnesia has been followed in vacuo, and in the presence of CO and H2, in order to understand the chemical processes which occur during the transformation of the mixed metal clusters into mixed metal particles. In vacuo, the anionic clusters [HFeM3(CO)13]- fragment into Fe2+ and [HM3(CO)11]- (M = Ru, Os), whereas [FeCo3(CO)12]- fragments to Fe2+ and [Co(CO)4]-. Under CO, the anionic cluster [HFeRu3(CO)13]- fragments to Fe(CO)5 and [HRu3(CO)11]- which further decomposes to ruthenium metal; the anionic cluster [HFeOs3(CO)13]- fragments to Fe(CO)5 and [HOs3(CO)11]- which produces the decacarbonyl cluster [Os10C(CO)24]-, which is extremely stable on the surface. The anionic cluster [FeCo3(CO)12]- fragments to Fe(CO)5 and [Co(CO)4]-, which is stabilized by surface cations. Under H2, the three mixed metal clusters decompose into mixed metal particles having the same composition as that of the starting cluster.",

author = "L. Huang and A. Choplin and Basset, {J. M.} and V. Siriwardane and Shore, {S. G.} and R. Mathieu",

year = "1989",

month = jan,

day = "1",

doi = "10.1016/0304-5102(89)80168-3",

language = "English (US)",

volume = "56",

pages = "1--19",

journal = "Journal of molecular catalysis",

issn = "0304-5102",

publisher = "Elsevier BV",

number = "1 -3 pt 2",

note = "Sixth International Symposium on Relations between Homogeneous and Heterogeneous Catalysis, Part 2 ; Conference date: 25-09-1989 Through 29-09-1989",

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TY - JOUR

T1 - Surface organometallic approach to the process of formation of bimetallic particles from bimetallic supported molecular clusters

AU - Huang, L.

AU - Choplin, A.

AU - Basset, J. M.

AU - Siriwardane, V.

AU - Shore, S. G.

AU - Mathieu, R.

PY - 1989/1/1

Y1 - 1989/1/1

N2 - The reaction of the mixed hydrido-carbonyl clusters H2FeM3(CO)13 (M = Ru, Os) and HFeCo3(CO)12 with the surface of hydroxylated magnesia leads to the grafted anionic clusters [HFeM3CO)13]-, (M = Ru, Os) and [FeCo3(CO)12]-, the cation being an Mg2+ ion from the surface. The reactivity of the mixed anions at the surface of magnesia has been followed in vacuo, and in the presence of CO and H2, in order to understand the chemical processes which occur during the transformation of the mixed metal clusters into mixed metal particles. In vacuo, the anionic clusters [HFeM3(CO)13]- fragment into Fe2+ and [HM3(CO)11]- (M = Ru, Os), whereas [FeCo3(CO)12]- fragments to Fe2+ and [Co(CO)4]-. Under CO, the anionic cluster [HFeRu3(CO)13]- fragments to Fe(CO)5 and [HRu3(CO)11]- which further decomposes to ruthenium metal; the anionic cluster [HFeOs3(CO)13]- fragments to Fe(CO)5 and [HOs3(CO)11]- which produces the decacarbonyl cluster [Os10C(CO)24]-, which is extremely stable on the surface. The anionic cluster [FeCo3(CO)12]- fragments to Fe(CO)5 and [Co(CO)4]-, which is stabilized by surface cations. Under H2, the three mixed metal clusters decompose into mixed metal particles having the same composition as that of the starting cluster.

AB - The reaction of the mixed hydrido-carbonyl clusters H2FeM3(CO)13 (M = Ru, Os) and HFeCo3(CO)12 with the surface of hydroxylated magnesia leads to the grafted anionic clusters [HFeM3CO)13]-, (M = Ru, Os) and [FeCo3(CO)12]-, the cation being an Mg2+ ion from the surface. The reactivity of the mixed anions at the surface of magnesia has been followed in vacuo, and in the presence of CO and H2, in order to understand the chemical processes which occur during the transformation of the mixed metal clusters into mixed metal particles. In vacuo, the anionic clusters [HFeM3(CO)13]- fragment into Fe2+ and [HM3(CO)11]- (M = Ru, Os), whereas [FeCo3(CO)12]- fragments to Fe2+ and [Co(CO)4]-. Under CO, the anionic cluster [HFeRu3(CO)13]- fragments to Fe(CO)5 and [HRu3(CO)11]- which further decomposes to ruthenium metal; the anionic cluster [HFeOs3(CO)13]- fragments to Fe(CO)5 and [HOs3(CO)11]- which produces the decacarbonyl cluster [Os10C(CO)24]-, which is extremely stable on the surface. The anionic cluster [FeCo3(CO)12]- fragments to Fe(CO)5 and [Co(CO)4]-, which is stabilized by surface cations. Under H2, the three mixed metal clusters decompose into mixed metal particles having the same composition as that of the starting cluster.

UR - http://www.scopus.com/inward/record.url?scp=0024769337&partnerID=8YFLogxK

U2 - 10.1016/0304-5102(89)80168-3

DO - 10.1016/0304-5102(89)80168-3

M3 - Conference article

SN - 0304-5102

VL - 56

SP - 1

EP - 19

JO - Journal of molecular catalysis

JF - Journal of molecular catalysis

IS - 1 -3 pt 2

T2 - Sixth International Symposium on Relations between Homogeneous and Heterogeneous Catalysis, Part 2

Y2 - 25 September 1989 through 29 September 1989

ER -

Surface organometallic approach to the process of formation of bimetallic particles from bimetallic supported molecular clusters

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