Effects of stoichiometric composition and surface characteristics on the catalytic activity of CoO catalyst

El-Shobaky, G.A.; Hewaidy, I.F.; El-Nabarawy, Th.

doi:10.1016/0376-4583(80)90078-3

Cited by 33 publications

(10 citation statements)

References 10 publications

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“…the band centered on 500 cm −1 [32]. Anyway, XRD spectra (not shown) after the 1000°C calcination indeed exhibit reflections of the CoO phase, in good agreement with previous works showing that the spinel Co 3 O 4 phase decomposes to CoO above 900°C [35][36][37].…”

Section: Deposition On Sisupporting

confidence: 74%

Black Co oxides coatings for thermosensitive polymer surfaces by low-temperature DLI-MOCVD

Duguet

Amin-Chalhoub

Samélor

et al. 2018

Surface and Coatings Technology

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. Black coatings are deposited at low temperature in order to enable the functionalization of thermosensitive substrates, such as epoxy-based carbon fiber reinforced polymers (CFRP). The direct liquid injection metalorganic chemical vapor deposition of Co oxide films is performed with the dicobalt octacarbonyl precursor, Co 2 (CO) 8 , in the temperature range 50°C-160°C, on Si substrates, first. Films morphology can be described by a dense sublayer on which the typical "cauliflower" microstructure grows, with a large amount of voids and open porosity. We obtain nanocrystalline CoO in the deposition temperature range 50°C-125°C, and nanocrystalline (CoO + Co 3 O 4 ) above 125°C. The bulk composition of the films is Co (45)O (45)C(10). Over the deposition temperatures tested, films processed at 125°C repetitively show the lowest reflectivity in the visible range. An important role in the optical reflectivity is attributed to the carbon content, although it is not possible to decorrelate microstructural changes from the carbon elimination in calcination experiments. Finally, we reproduce the above-mentioned results with success on CFRP substrates, and demonstrate the applicability of the process on thermosensitive composite parts with results comparable to the state-of-the-art in the visible range.

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Section: Deposition On Sisupporting

confidence: 74%

Black Co oxides coatings for thermosensitive polymer surfaces by low-temperature DLI-MOCVD

Duguet

Amin-Chalhoub

Samélor

et al. 2018

Surface and Coatings Technology

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“…In the area of electric apparatus, Yu et al [14] studied the capacitance capacity of CoO crystallites prepared by means of developing Co 3 O 4 nanoplatelets in the molten salt and Dhage et al [15] discussed the influence of an alkali earth (Ba/Sr) element in small quantities on non-linear electrical properties of SnO 2 ·CoO·Ta 2 O 5 ceramic. In the application of heterogeneous catalysis, EI-Shobaky et al [16] under a reduced pressure and found the catalytic activity of the CoO powders in the oxidation of CO. Okamoto et al [17] investigated the effects of the starting cobalt salt on the cobalt-alumina interaction modes and cobalt dispersion in CoO/Al 2 O 3 catalysts. CoO and it-based materials were also studied in the field of magnetic materials [18,19].…”

Section: Introductionmentioning

confidence: 98%

Microstructure and optical absorption properties of Au-dispersed CoO thin films

Wang

Zhang

Yan

et al. 2011

Journal of Alloys and Compounds

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“…Also, the calcination temperature and atmosphere in contact with solid substrates affect the phase composition of NiO/MgO solid solution [19]. Method of preparation and chemical composition [20] of mixed oxides are important factors affecting their surface and catalytic properties, these properties could also be modified by doping with certain foreign oxide or treating with ionizing radiation [21,22]. In fact, it has been reported that doping Ni/ MgO with alkali promoter as lithium ions affect the morphology, the active surface area and the electronic properties of Ni/ MgO catalyst [23].…”

Section: Introductionmentioning

confidence: 99%