The Oxidation of Graphitized Carbon Black.

Smith, W. R.; Polley, M. H.

doi:10.1021/j150539a046

Cited by 77 publications

(30 citation statements)

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“…The Raman shift decreases with increasing size of the cation in the series of the alkali metal hyperoxides Na02, KO2, RbU2, and Cs02-This may be understood in terms of a decreasing cationic field in the sequence of hyperoxides given above (see Table VIE). As expected, the frequencies of the observed O-Ostretching modes increase with increasing O-O-bond order in the series θ2^' (~ 800 cm" 1 ; see Chapter 4.4), 02* (~ 1150 cm" 1 ), 02 (1550 cm" 1 [29]), and 02 + (1843 cm" 1 [139]). …”

Section: Rubidium and Cesium Hyperoxidessupporting

confidence: 75%

“…The geometry of this 19 e" radical anion was especially controversial; Zhdanova and Zvonkova even suggested a linear Oß'group like N3"in KN3 [28]. More reasonable results were obtained by theoretical methods [29,30,31].…”

Section: 1 Alkali Metal Ozonidesmentioning

confidence: 99%

“…200. As a result, unreasonable dimensions for the ozonide ion were obtained (142 pm, 101°), while theoretical predictions are in the range between 128 and 135 pm for the bond lengths and 108 and 120° for the bond angle [29,30,31].…”

Section: T Ut Crystal Structuresmentioning

confidence: 99%

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Recent results in solid state chemistry of ionic ozonides, hyperoxides, and peroxides

Hesse

Jansen

Schnick

1989

Progress in Solid State Chemistry

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Section: Rubidium and Cesium Hyperoxidessupporting

confidence: 75%

Section: 1 Alkali Metal Ozonidesmentioning

confidence: 99%

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Recent results in solid state chemistry of ionic ozonides, hyperoxides, and peroxides

Hesse

Jansen

Schnick

1989

Progress in Solid State Chemistry

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“…Erst in jüngster Zeit wurden die Alkalimetallsuboxide aufgeklärt [11]. Am wenigsten zuverlässig ist man gegenwärtig über die Alkalimetallozonide informiert, obwohl es auch hier in der Vergangenheit nicht.an Anstrengungen gefehlt hat, die Natur dieser Verbindungen aufzuklären [12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Die Erforschung Der Alkalimetalloxide Hat -In Anbetracht Ihrunclassified

Über Rubidiumozonid. Reindarstellung und Kristallstruktur

Schnick

Jansen

1986

Zeitschrift anorg allge chemie

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Es wird ein verbessertes Darstellungsverfahren für Rubidiumozonid mitgeteilt, das über die Ozonisierung des Hyperoxides bei Raumtemperatur und anschließende Anreicherung durch Extraktion mit flüssigem Ammoniak erstmals RbO3 in einkristalliner Form und in präparativen Mengen (1–5 g) zugänglich macht. Die Röntgenstrukturanalyse (P21/c; a = 645,2(3), b = 602,2(3), c = 876,3(3) pm, ß = 122,34(2)°; −20°C; MoKα; 2640 Diffraktometerdaten; Rw = 2,6%) sichert die vermutete Konstitution des Anions O3−, das innerhalb der Fehlergrenzen die Punktsymmetrie C2v aufweist mit d(OO) = 133,6(9) pm und einem Bindungswinkel von 113,7(7)°. Hinsichtlich der Packung von Kationen und Anionen besteht eine enge Beziehung zur CsCl‐Struktur.

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“…3). Grisdale [5] and Smith and Policy [6] showed that the rate of oxidation of carbon crystallites is about 17 times faster in the direction parallel to the basal planes (along their edge atoms described here as 'edge atoms') than perpendicular to them. From the previous publication [1] it was deduced that low surface area carbon blacks tended to have faster rates per unit area of surface then the higher area surface area carbons.…”

Section: Resultsmentioning

confidence: 98%

An investigation of the activity of carbon blacks recovered from elastomer composites

Azizi

Dollimore

Heal

et al. 1996

Journal of Thermal Analysis

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The activity of carbon blacks recovered from elastomer systems is determined by use of a temperature jump technique imposed on the carbon blacks in air using a TG unit. The elastomer composites were composed of styrene-butadiene rubber (SRR), fillers, activators, accelerators together with a number of different carbon blacks. The organic content was pyrolyzed away by heating in nitrogen, the atmosphere was changed to air and the activity of the carbons was assessed by the temperature jump method. This enables the Arrhenius parameters to be established for the gasification of the carbons in air. This data was compared with the oxidation rates of earboris before they were introduced into the elastomer system. Nitrogen adsorption surface areas based on a BET analysis showed that the surface area of the carbons was similar before and after ineorp6ration into the composite. The kinetic parameters of the carbons were however somewhat altered by incorporation into the elastomer systems, but their order of activity towards the gasification process as assessed by their relative rate of gasification remained the same. This is explained by postulating that the higher rates of oxidation is associated with the present of edge carbon atoms at the surface compared to the much slower oxidation rates of the 'basel' plane carbon atoms. It appears that this surface structure is largely retained in the composite earbon-elastomer system. This enables some speculation regarding the reinforcing action of certain carbon blacks in the composite system.

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The Oxidation of Graphitized Carbon Black.

Cited by 77 publications

References 0 publications

Recent results in solid state chemistry of ionic ozonides, hyperoxides, and peroxides

Recent results in solid state chemistry of ionic ozonides, hyperoxides, and peroxides

Über Rubidiumozonid. Reindarstellung und Kristallstruktur

An investigation of the activity of carbon blacks recovered from elastomer composites

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