The catalytic behavior of alkali metal carbonates and oxides in graphite oxidation reactions

McKee, D.W.; Chatterji, Dipankar

doi:10.1016/0008-6223(75)90006-8

Cited by 245 publications

(107 citation statements)

References 9 publications

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“…Catalytic oxidation of graphite has received considerable attention [17][18][19]. Ranish and Walker [17] considered the effect of catalyst particles on the development of active surface area.…”

Section: The Fate Of Surface Irregularities If Burn Off Indeed Occurmentioning

confidence: 99%

Geometric effects control isothermal oxidation of graphite flakes

Badenhorst

Focke

2012

J Therm Anal Calorim

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The oxidation, in a neat oxygen atmosphere, of high-purity and highly crystalline natural graphite and synthetic Kish graphite was investigated. The physico-geometric model function of the kinetic rate equation was experimentally determined by isothermal thermogravimetric analysis at 650 °C. Analytic solutions for basic flake shapes indicate that this function strictly decreases with conversion. However, for both samples the experimental data trend was a rapid initial increase followed by the expected decrease to zero. High resolution field emission scanning electron microscopy (FEGSEM), of partially oxidized flakes, provided plausible explanations for this discrepancy. Rapid development of macroscopic surface roughness during the initial stages of oxidation was evident and could be attributed to the presence of catalytic impurities. Large fissures along the planes of the natural graphite and the initiation, growth and coalescence of internal cavities in the Kish graphite were observed.Flake models incorporating the latter two features are difficult to analyse analytically.However, a facile probabilistic approach showed that reasonably good agreement with experimental data was possible.

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Section: The Fate Of Surface Irregularities If Burn Off Indeed Occurmentioning

confidence: 99%

Geometric effects control isothermal oxidation of graphite flakes

Badenhorst

Focke

2012

J Therm Anal Calorim

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show abstract

“…The catalytic behavior of alkali metal carbonates (Li 2 CO 3 , Na 2 CO 3 , K 2 CO 3 , Cs 2 CO 3 and Rb 2 CO 3 ) and oxides (Na 2 O, Rb 2 O, Cs 2 O, Li 2 O and K 2 O) in graphite oxidation reaction were studied by McKee and Chatterji (1975). It was found that the catalytic effect involves an oxidation-reduction cycle with the intermediate formation of peroxide or higher oxide of the alkali metal.…”

Section: Amentioning

confidence: 99%

Catalytic Gasification of Coal using Eutectic Salt Mixtures

Sheth¹,

Agrawal²,

Yeboah³

1998

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“…McKee and Chatterji (124) have shown that the active intermediate in catalysis of the C-02 is a metal oxide. As with the C-C02 reaction they state that only those metal oxides which are thermodynamically capable of being reduced by carbon to a lower oxide or the metal catalyse the C-02 reaction.…”

Section: Such a Detailed Study As That Of Cerfontain Et Al (118) On mentioning

confidence: 99%

“…As with the C-C02 reaction they state that only those metal oxides which are thermodynamically capable of being reduced by carbon to a lower oxide or the metal catalyse the C-02 reaction. On examining catalysis by sodium oxide, it was observed (124) that the temperature at which gasification was first accelerated corresponded closely to the melting point of sodium peroxide, i.e. 4GOoC.…”

Section: Such a Detailed Study As That Of Cerfontain Et Al (118) On mentioning

confidence: 99%

99/02731 The influence of pitch quality on anode carbon gasification

Hussain¹

1999

Fuel and Energy Abstracts

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The catalytic behavior of alkali metal carbonates and oxides in graphite oxidation reactions

Cited by 245 publications

References 9 publications

Geometric effects control isothermal oxidation of graphite flakes

Geometric effects control isothermal oxidation of graphite flakes

Catalytic Gasification of Coal using Eutectic Salt Mixtures

99/02731 The influence of pitch quality on anode carbon gasification

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