Thermal decomposition of Fe3(CO)12 adsorbed on silica: A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and Mössbauer spectroscopy

D. Rojas; P. Bussière; J. A. Dalmon; A. Choplin; J. M. Basset; D. Olivier

doi:10.1016/0039-6028(85)90614-4

Thermal decomposition of Fe₃(CO)₁₂ adsorbed on silica: A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and Mössbauer spectroscopy

D. Rojas^*, P. Bussière, J. A. Dalmon, A. Choplin, J. M. Basset, D. Olivier

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The thermal decomposition under H₂ of Fe₃(CO)₁₂ adsorbed on silica 500 has been followed by the above-mentioned techniques. Fe₃(CO)₁₂ is simply physisorbed on the silica surface at room temperature. Thermal decomposition occurs under H₂ at ≈ 100°C and is complete at $ ̃120°C. During this process CO (10 mol/mol cluster). CO₂ (0.25), CH₄(0.012) and C₂H₄ (0.005) are evolved in the gas phase. Simultaneously the iron from the cluster is transformed into mainly particles of metallic iron (35-85 Å) as well as iron carbide and Fe²⁺. These metal particles appear to be loosely bound to the silica support (low apparent Lamb-Mössbauer factor). The results suggest that these particles of metallic iron or iron carbide are responsible for a Fischer-Tropschlike behaviour which transforms progressively the CO ligands of the starting cluster into CO₂ and hydrocarbons.

Original language	English (US)
Pages (from-to)	516-529
Number of pages	14
Journal	Surface Science
Volume	156
Issue number	PART 1
DOIs	https://doi.org/10.1016/0039-6028(85)90614-4
State	Published - Jun 3 1985
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(85)90614-4

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@article{a25d2c017d20400abb7684a48463f4b1,

title = "Thermal decomposition of Fe3(CO)12 adsorbed on silica: A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and M{\"o}ssbauer spectroscopy",

abstract = "The thermal decomposition under H2 of Fe3(CO)12 adsorbed on silica 500 has been followed by the above-mentioned techniques. Fe3(CO)12 is simply physisorbed on the silica surface at room temperature. Thermal decomposition occurs under H2 at ≈ 100°C and is complete at ${\~ }120°C. During this process CO (10 mol/mol cluster). CO2 (0.25), CH4(0.012) and C2H4 (0.005) are evolved in the gas phase. Simultaneously the iron from the cluster is transformed into mainly particles of metallic iron (35-85 {\AA}) as well as iron carbide and Fe2+. These metal particles appear to be loosely bound to the silica support (low apparent Lamb-M{\"o}ssbauer factor). The results suggest that these particles of metallic iron or iron carbide are responsible for a Fischer-Tropschlike behaviour which transforms progressively the CO ligands of the starting cluster into CO2 and hydrocarbons.",

author = "D. Rojas and P. Bussi{\`e}re and Dalmon, {J. A.} and A. Choplin and Basset, {J. M.} and D. Olivier",

year = "1985",

month = jun,

day = "3",

doi = "10.1016/0039-6028(85)90614-4",

language = "English (US)",

volume = "156",

pages = "516--529",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "PART 1",

}

Thermal decomposition of Fe₃(CO)₁₂ adsorbed on silica: A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and Mössbauer spectroscopy. / Rojas, D.; Bussière, P.; Dalmon, J. A. et al.
In: Surface Science, Vol. 156, No. PART 1, 03.06.1985, p. 516-529.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Thermal decomposition of Fe3(CO)12 adsorbed on silica

T2 - A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and Mössbauer spectroscopy

AU - Rojas, D.

AU - Bussière, P.

AU - Dalmon, J. A.

AU - Choplin, A.

AU - Basset, J. M.

AU - Olivier, D.

PY - 1985/6/3

Y1 - 1985/6/3

N2 - The thermal decomposition under H2 of Fe3(CO)12 adsorbed on silica 500 has been followed by the above-mentioned techniques. Fe3(CO)12 is simply physisorbed on the silica surface at room temperature. Thermal decomposition occurs under H2 at ≈ 100°C and is complete at $ ̃120°C. During this process CO (10 mol/mol cluster). CO2 (0.25), CH4(0.012) and C2H4 (0.005) are evolved in the gas phase. Simultaneously the iron from the cluster is transformed into mainly particles of metallic iron (35-85 Å) as well as iron carbide and Fe2+. These metal particles appear to be loosely bound to the silica support (low apparent Lamb-Mössbauer factor). The results suggest that these particles of metallic iron or iron carbide are responsible for a Fischer-Tropschlike behaviour which transforms progressively the CO ligands of the starting cluster into CO2 and hydrocarbons.

AB - The thermal decomposition under H2 of Fe3(CO)12 adsorbed on silica 500 has been followed by the above-mentioned techniques. Fe3(CO)12 is simply physisorbed on the silica surface at room temperature. Thermal decomposition occurs under H2 at ≈ 100°C and is complete at $ ̃120°C. During this process CO (10 mol/mol cluster). CO2 (0.25), CH4(0.012) and C2H4 (0.005) are evolved in the gas phase. Simultaneously the iron from the cluster is transformed into mainly particles of metallic iron (35-85 Å) as well as iron carbide and Fe2+. These metal particles appear to be loosely bound to the silica support (low apparent Lamb-Mössbauer factor). The results suggest that these particles of metallic iron or iron carbide are responsible for a Fischer-Tropschlike behaviour which transforms progressively the CO ligands of the starting cluster into CO2 and hydrocarbons.

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U2 - 10.1016/0039-6028(85)90614-4

DO - 10.1016/0039-6028(85)90614-4

M3 - Article

AN - SCOPUS:46549093959

SN - 0039-6028

VL - 156

SP - 516

EP - 529

JO - Surface Science

JF - Surface Science

IS - PART 1

ER -

Thermal decomposition of Fe₃(CO)₁₂ adsorbed on silica: A study by gas-phase analysis, infrared spectroscopy, magnetization measurements, ferromagnetic resonance and Mössbauer spectroscopy

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