Reexamination of the mercury-photosensitized oxidation of perfluoropropene: some reactions of electronically excited oxygen molecules

Heicklen, Julian; Johnston, Timothy

doi:10.1021/j100864a032

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…The relative reactivity of 0: with T M P measured in this investigation, ( k 1 3 + k14)/k21 = 0.012, lies between the values for CzH4 and C3Fs measured by Heicklen and Johnston [2]. The relative reactivities based on 0 2 = 1 are the following: C3F6 = 5.6, T M P = 83, CzH4 2 4700.…”

supporting

confidence: 74%

“…One set of objectives of the present investigation was to: (1) examine the products of the reaction between 0: and CO (presumably COZ), (2) obtain the relative degree of physical versus chemical quenching of 0: by both 0 2 and CO, and (3) check the relative quenching efficiency of 0 ; by CO and 0 2 by a different method. The reaction between 0; and CO may produce the intermediate COs, and it was hoped that kinetic evidence for the presence of this species might be obtained for this system.…”

Section: (5)mentioning

confidence: 99%

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The mercury‐sensitized oxidation of carbon monoxide

Simonaitis

Heicklen

1971

Int J of Chemical Kinetics

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The mercury‐photosensitized oxidation of CO was studied at 275°C over a wide range of [O2]/[CO] ratios in the absence and presence of the oxygen atom scavenger 2‐trifluoromethylpropene (TMP) and at 25°C at low [O2]/[CO] ratios in the presence of TMP. By following the quantum yield of CO2 production, Φ {CO2}, as a function of the [O2]/[CO] ratio, the reactions of vibrationally excited CO (v υ 9) and electronically excited O2, probably in the c1Σ−u state, were studied. At low [O2]/[CO] ratios the predominant reactions are of vibrationally excited CO (v υ 9). Relative rate constants for chemical reaction versus deactivation of CO (v υ 9) were obtained. At higher [O2]/[CO] ratios, the principal reactions are of electronically excited O2. Relative rate constants for chemical reactions and deactivation of this electronically excited O2 with CO, O2, and TMP were obtained. From the effect of total pressure on Φ {CO2}, it is proposed that an intermediate CO3 is formed in the reaction of electronically excited O2 with CO.

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confidence: 74%

Section: (5)mentioning

confidence: 99%

The mercury‐sensitized oxidation of carbon monoxide

Simonaitis

Heicklen

1971

Int J of Chemical Kinetics

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Gas Phase Oxidation of Perhalocarbons

Heicklen

1969

Advances in Photochemistry

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Hexafluorpropenoxid – eine Schlüsselverbindung der organischen Fluorchemie

1985

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Professor Rolf Sammet zum 65. Geburtstag gewidmetVon den wichtigen C3-Bausteinen der organischen Fluorchemie -Hexafluorpropen, Hexafluoraceton und Hexafluorpropenoxid -ist die letztgenannte Verbindung chemisch am vielseitigsten. Hexafluorpropenoxid (HFPO) bildet ein weiteres Beispiel fur die haufig beobachtete h d e r u n g der Reaktivitat beim Ubergang von Kohlenwasserstoffen zu den perfluorierten Analoga. Die meisten Reaktionen von Hexafluorpropenoxid werden durch den Angriff eines Nucleophils eingeleitet. Die Umlagerung von Hexafluorpropenoxid zu Hexafluoraceton in Gegenwart von Lewis-Sauren ist die Basis fur eine Weiterentwicklung der Chemie dieses Bausteins. AuRerdem gilt HFPO als gunstige Difluorcarben-Quelle. In der technischen organischen Chemie spieit Hexafluorpropenoxid heute eine bedeutende Rolle fur die Herstellung hochwertiger Fluorprodukte. Einfuhrung Allgemeine Eigenschaften von HFPOHFPO ist ein farbloses, nicht brennbares, schwach riechendes Gas, das bei -27.4"C/1013 mbar siedet. Unter Druck verfliissigt ist HFPO in Abwesenheit von Wasser, Lewis-Siiuren oder Basen bei Raumtemperatur stabil. Eine spontane Polymerisation wurde nicht beobachtet. Die thermische Zersetzung tritt erst ab 150°C ein''].HFPO weist einen kiirzeren C-0-Abstand als der analoge Kohlenwasserstoff Propylenoxid auf; die C-CF,-Bindung ist langer als die C-CH3-Bindung in Propylenoxid. Die Bindungswinkel stimmen etwa iiberein14].Das "F-NMR-Spektrum ist bekannt"'. Das IR-Spektrum zeichnet sich ,durch eine starke Bande zwischen 1480 und 1620 cm-' mit einem Maximum bei 1550 cm-' aus,

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Reexamination of the mercury-photosensitized oxidation of perfluoropropene: some reactions of electronically excited oxygen molecules

Cited by 8 publications

References 2 publications

The mercury‐sensitized oxidation of carbon monoxide

The mercury‐sensitized oxidation of carbon monoxide

Gas Phase Oxidation of Perhalocarbons

Hexafluorpropenoxid – eine Schlüsselverbindung der organischen Fluorchemie

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