CO2 laser-induced formation of carbonyl fluoride and sulfur tetrafluoride from carbon monoxide and sulfur hexafluoride

Reaction of SF6 with CO was initiated with a cw CO2 laser and shown to represent a system of two competitive consecutive reactions, namely the reaction between SF6 and CO affording COF2 and SF4, and the reaction between SF4 and CO leading to SOF2 and CF4. The former, major, reaction is favored with lower consumption of SF6 and lower SF6/CO ratio in the initial SF6-CO mixture.

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ChemInform Abstract: CARBON DIOXIDE LASER-INDUCED FORMATION OF CARBONYL FLUORIDE AND SULFUR TETRAFLUORIDE FROM CARBON MONOXIDE AND SULFUR HEXAFLUORIDE

Chemischer Informationsdienst ◽

10.1002/chin.198108164 ◽

1981 ◽

Vol 12 (8) ◽

Author(s):

J. POLA

Keyword(s):

Carbon Dioxide ◽

Carbon Monoxide ◽

Carbon Dioxide Laser ◽

Sulfur Hexafluoride ◽

Sulfur Tetrafluoride ◽

Carbonyl Fluoride

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CO2 Laser-induced and BCl3-sensitized decomposition of hexafluoroacetone. Comparison with high temperature thermochemistry

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19820912 ◽

1982 ◽

Vol 47 (3) ◽

pp. 912-917

Author(s):

Josef Pola ◽

Pavel Engst ◽

Milan Horák

Keyword(s):

Thermal Decomposition ◽

Carbon Monoxide ◽

High Temperature ◽

Co2 Laser ◽

Carbonyl Compounds ◽

Total Pressure ◽

Tungsten Filament ◽

Reaction Progress ◽

Induced Decomposition ◽

Carbonyl Fluoride

The cw CO2laser-induced decomposition of hexafluoroacetone sensitized with boron trichloride (total pressure 5.3-8.0 kPa) yields along with perfluorinated hydrocarbons trifluoroacetyl fluoride, carbon monoxide and carbonyl fluoride. The same carbonyl compounds are also formed by conventional thermal decomposition of hexafluoroacetone on tungsten filament at temperatures 950-2 100°C but their distribution during reaction progress is different. Features of both reactions are discussed.

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Carbonyl fluoride formation by cw-CO2 laser-induced and sulfur hexafluoride-sensitized decomposition of hexafluoroacetone

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19811254 ◽

1981 ◽

Vol 46 (5) ◽

pp. 1254-1257 ◽

Cited By ~ 3

Author(s):

Josef Pola ◽

Pavel Engst ◽

Milan Horák

Keyword(s):

Gas Phase ◽

Co2 Laser ◽

Sulfur Hexafluoride ◽

Phase Decomposition ◽

First Order ◽

First Order Kinetics ◽

Cw Co2 Laser ◽

Carbonyl Fluoride

The cw-CO2 laser-induced gas phase decomposition of hexafluoroacetone sensitized with sulfur hexafluoride (both 0.7-5.2 kPa) affords, besides perfluorinated hydrocarbons and minor amounts of trifluoroacetyl fluoride, carbonyl fluoride the formation of that obeys first-order kinetics and is favored with higher SF6 content.

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Cw CO2 laser driven oxidation of some perhalogenocycloalkenes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19910398 ◽

1991 ◽

Vol 56 (2) ◽

pp. 398-405 ◽

Cited By ~ 2

Author(s):

Josef Pola ◽

Jaroslav Včelák ◽

Zdeněk Chvátal

Keyword(s):

Co2 Laser ◽

Total Pressure ◽

Diels Alder ◽

Title Reaction ◽

Consecutive Reactions ◽

Cw Co2 Laser

The title reaction of hexafluorocyclobutene, 1,2-dichloro-3,3,4,4-tetrafluorocyclobutene and decafluorocyclohexene studied at total pressure 13.3 and 16 kPa yield oxalyl halides COX.COX (X = F, Cl) and C2F4 that undergo consecutive reactions to COF2, CO and X2. The oxidation of decafluorocyclohexene is preceded by retro-Diels-Alder decomposition affording hexafluorocyclobutene and C2F4. Two alternative mechanisms for the oxidation of the cyclobutenes are presented, one involving a novel cleavage of intermediary bicyclic dioxetanes. The decomposition of oxalyl fluoride into COF2 and CO is favored over its oxidation.

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