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Catalytic CO oxidation over well-defined cobalt oxide nanoparticles: size-reactivity correlation

(2015) ACS CATALYSIS. 5(10). p.5714-5718
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Abstract
Co nanoparticles of well-defined size were synthesized by temperature-controlled injection of Co-2(CO)(8) into dichlorobenzene. After intercalation into mesoporous MCF-17 and temperature-programmed oxidation, Co3O4/MCF-17 model catalysts were obtained with cobalt oxide particle sizes varying between 3.5 and 12.2 nm. We demonstrate here the occurrence of a distinct particle size effect for the CO oxidation. Maximum reaction rates of about 0.77 nm(-2) s(-1) at 150 degrees C were observed for Co3O4 particles with a size in the range of 5 to 8 nm. The reaction rates decreased for either smaller or larger sizes. X-ray photoelectron spectroscopy allowed establishing a clear correlation between the Co3+ trivalent oxidation state and the CO oxidation rate.
Keywords
XPS, LOW-TEMPERATURE OXIDATION, CARBON-MONOXIDE OXIDATION, catalytic CO oxidation, Co3O4 nanoparticles, cobalt nanoparticles, particle size effect, METAL-OXIDES, CO3O4, NANOCRYSTALS, OXYGEN, HYDROCARBONS, CHEMISTRY, SURFACES, PHASE

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MLA
Iablokov, Viacheslav et al. “Catalytic CO Oxidation over Well-defined Cobalt Oxide Nanoparticles: Size-reactivity Correlation.” ACS CATALYSIS 5.10 (2015): 5714–5718. Print.
APA
Iablokov, V., Barbosa, R., Pollefeyt, G., Van Driessche, I., Chenakin, S., & Kruse, N. (2015). Catalytic CO oxidation over well-defined cobalt oxide nanoparticles: size-reactivity correlation. ACS CATALYSIS, 5(10), 5714–5718.
Chicago author-date
Iablokov, Viacheslav, Roland Barbosa, Glenn Pollefeyt, Isabel Van Driessche, Sergey Chenakin, and Norbert Kruse. 2015. “Catalytic CO Oxidation over Well-defined Cobalt Oxide Nanoparticles: Size-reactivity Correlation.” Acs Catalysis 5 (10): 5714–5718.
Chicago author-date (all authors)
Iablokov, Viacheslav, Roland Barbosa, Glenn Pollefeyt, Isabel Van Driessche, Sergey Chenakin, and Norbert Kruse. 2015. “Catalytic CO Oxidation over Well-defined Cobalt Oxide Nanoparticles: Size-reactivity Correlation.” Acs Catalysis 5 (10): 5714–5718.
Vancouver
1.
Iablokov V, Barbosa R, Pollefeyt G, Van Driessche I, Chenakin S, Kruse N. Catalytic CO oxidation over well-defined cobalt oxide nanoparticles: size-reactivity correlation. ACS CATALYSIS. 2015;5(10):5714–8.
IEEE
[1]
V. Iablokov, R. Barbosa, G. Pollefeyt, I. Van Driessche, S. Chenakin, and N. Kruse, “Catalytic CO oxidation over well-defined cobalt oxide nanoparticles: size-reactivity correlation,” ACS CATALYSIS, vol. 5, no. 10, pp. 5714–5718, 2015.
@article{7008573,
  abstract     = {Co nanoparticles of well-defined size were synthesized by temperature-controlled injection of Co-2(CO)(8) into dichlorobenzene. After intercalation into mesoporous MCF-17 and temperature-programmed oxidation, Co3O4/MCF-17 model catalysts were obtained with cobalt oxide particle sizes varying between 3.5 and 12.2 nm. We demonstrate here the occurrence of a distinct particle size effect for the CO oxidation. Maximum reaction rates of about 0.77 nm(-2) s(-1) at 150 degrees C were observed for Co3O4 particles with a size in the range of 5 to 8 nm. The reaction rates decreased for either smaller or larger sizes. X-ray photoelectron spectroscopy allowed establishing a clear correlation between the Co3+ trivalent oxidation state and the CO oxidation rate.},
  author       = {Iablokov, Viacheslav and Barbosa, Roland and Pollefeyt, Glenn and Van Driessche, Isabel and Chenakin, Sergey and Kruse, Norbert},
  issn         = {2155-5435},
  journal      = {ACS CATALYSIS},
  keywords     = {XPS,LOW-TEMPERATURE OXIDATION,CARBON-MONOXIDE OXIDATION,catalytic CO oxidation,Co3O4 nanoparticles,cobalt nanoparticles,particle size effect,METAL-OXIDES,CO3O4,NANOCRYSTALS,OXYGEN,HYDROCARBONS,CHEMISTRY,SURFACES,PHASE},
  language     = {eng},
  number       = {10},
  pages        = {5714--5718},
  title        = {Catalytic CO oxidation over well-defined cobalt oxide nanoparticles: size-reactivity correlation},
  url          = {http://dx.doi.org/10.1021/acscatal.5b01452},
  volume       = {5},
  year         = {2015},
}

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