EFFECT OF ADDED AMMONIA ON THE REACTIONS OF ACTIVE NITROGEN WITH CH4, C2H6, AND C2H4

Wright, A. N.; Winkler, C. A.

doi:10.1139/v62-198

Cited by 11 publications

(2 citation statements)

References 8 publications

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“…Ethyl radicals can result from ethane decomposition by electron impact or by active nitrogen "1"14'18) through reactions such as C2H6+N2(A) --~ C2Hs+H+N2 (15) C2H6 + N2(X, o) --~ C2H5 + H + N2 (16) It is possible that N2(X, v) may play the same role as N2(A) in the dissociation of ethane when v is high enough. On the contrary, the following reactions seem unlikely because their rate constants are too low:…”

Section: Ethylenementioning

confidence: 99%

A kinetic study of methane conversion by a dinitrogen microwave plasma

Oumghar

Legrand

Diamy

et al. 1994

Plasma Chem Plasma Process

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Section: Ethylenementioning

confidence: 99%

A kinetic study of methane conversion by a dinitrogen microwave plasma

Oumghar

Legrand

Diamy

et al. 1994

Plasma Chem Plasma Process

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“…both nitrogen atoms and hydrogen atoms fori-i~ed by the nitrogen atom reaction, or by the presence of two reactive species in active nitrogen. The nature of such a second species is open t o cluestion, b u t recent evidence (5,6,7) suggests t h a t the excited nitrogen molecule K2(A138,,+) is capable of initiating reactions (8) with saturated hydrocarbons such as methane and ethai~e.…”

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The Rate of Reaction of Active Nitrogen With Ethane, Propane, and Neopentane

Jones¹,

Winkler²

1964

Can. J. Chem.

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The reactions of active nitrogen with ethane, propane, and ncopentane have been studied o\.er the ternperat~~re range 0 to 450 "C. X cobalt probe technique \\.as used to stop the reactions after various reaction tirnes. Second ordcr rate constants have bee11 calculated on the assumption that nitrogen atonls are the only reactive species in active nitrogen. Broken Arrheni~ls lines wcre obtained for both the ethane and neoperrtane reactions but this beha\,ior \\.as not observed with the propane reaction. The dual activation energies have been attributed to a mechanism involving initiation by both excited molccoles ancl either nitrogen or hydrogen atoms. Methods are outlincd by which an estimate has been made of the concentration of excited species assumed to be involved in the ethane reaction. IXTRODUCTIONI n previous investigations of the reactions of ethane (1, 2), propane (3), and neopentane (4) with active nitrogen, approximate rate constants, activation energies, and steric factors were evaluated from hydrogen cyanide yields a t various temperatures, on the assu~nption t h a t the reactions were second order. While there appeared t o be only one activation energy associated with the propane reaction over the whole temperature range studied, the d a t a for each of the other two reactions were found t o correspond to two activation energies, one a t lo\ver, the other a t higher temperatures. I t mas suggcsted t h a t the results for ethane (2) and neopentane (3) could be explained by the concomitant attacli of the parent l~ydrocarbon b~. both nitrogen atoms and hydrogen atoms fori-i~ed by the nitrogen atom reaction, or by the presence of two reactive species in active nitrogen. The nature of such a second species is open t o cluestion, b u t recent evidence (5, 6, 7) suggests t h a t the excited nitrogen molecule K2(A138,,+) is capable of initiating reactions (8) with saturated hydrocarbons such as methane and ethai~e.Recent1~-, n~ethods (9) have been clevelopcd by ~vhich active nitrogen reactions can be cluenchcd a t various points do~~rnstream from the reactant jet, with the advantage that reaction time may be controlled and more reliable estimates of the rate constants obtained. In the present stud\-, a cobalt target (10) has been used t o quench the active 'Fina?lcial assistmce from !he ATational Research Coutlcil.

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Addition of Atoms to Olefins in the Gas Phase

Cvetanović

1963

Advances in Photochemistry

210

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EFFECT OF ADDED AMMONIA ON THE REACTIONS OF ACTIVE NITROGEN WITH CH₄, C₂H₆, AND C₂H₄

Cited by 11 publications

References 8 publications

A kinetic study of methane conversion by a dinitrogen microwave plasma

A kinetic study of methane conversion by a dinitrogen microwave plasma

The Rate of Reaction of Active Nitrogen With Ethane, Propane, and Neopentane

Addition of Atoms to Olefins in the Gas Phase

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