373-91-1Relevant academic research and scientific papers
Electronic Spectroscopy of CF3O in a Supersonic Jet: Symmetry and Rotational Structure of a Prototypical Perfluoroalkoxy Radical
Tan, Xue-Qing,Yang, Min-Chieh,Carter, Christopher C.,Williamson, James M.,Miller, Terry A.,et al.
, p. 2732 - 2734 (1994)
The electronic transition of CF3O was observed in a supersonic yet using laser-induced fluorescence.Rotational analysis of the high-resolution spectrum of the origin band is consistent with CF3O having C3ν symmetry in both its ground and excited electronic states.The lowest level is best described as 2E3/2 with residual unquenched electronic angular momentum, leading to a significant spin-orbit splitting.
Multiple Infrared Photon Dissociation and Kinetics of CF3O Radicals
Zhang, Fumin,Francisco, J. S.,Steinfeld, J. I.
, p. 2402 - 2406 (1982)
The multiple infrared photon dissociation of CF3O radicals generated from bis(trifluoromethyl) peroxide has been investigated.Infrared fluorescence from HF, formed by reaction of the liberated F atom with HI, was used to monitor the dissociation over a range of infrared fluences.A simple rate equation model has been used to interpret the multiphoton excitation and dissociation of the CF3O species.The kinetics of the recombination reaction, CF3O + F CF3OF, have been investigated by scavenging the F atoms with added HI.The rate constant for this reaction at 300 K is determined to be (3.5+/-0.5)E10 L mol-1 s-1.
Catalytic microreactor with electrodeposited hierarchically nanostructured nickel coatings for gas-phase fluorination reactions
Sansotera, Maurizio,Baggioli, Alberto,Ieffa, Simona,Tedesco, Mariella,Sacchi, Benedetta,Bianchi, Claudia L.,Navarrini, Michele,Migliori, Massimo,Magagnin, Luca,Navarrini, Walter
, p. 22 - 29 (2017/12/06)
The fabrication of a catalytic microreactor for the reaction of undiluted carbonyl difluoride and elemental fluorine to synthesize trifluoromethyl hypofluorite, CF3OF, on CsF catalyst supported on F2-passivated nanosctructured Ni coating was studied. The nanosctructured Ni support for catalyst immobilization was electrodeposited by a two-step procedure, consisting of a low current density step followed by a brief high current density one, for a hierarchical differentiation of structural features. An aqueous solution of NiCl2 with diethanolamine, as crystal modifier, and sodium lauryl sulphate, as anti-pitting agent, was used as electrolyte. Constant-pH Ni electrocrystallization was performed on H2SO4-etched Cu substrates in a range of pH from 1 to 4 via a HCl/H3BO3 based buffer. Passivation was carried out under up to 300 mbar of undiluted F2. XRD, XPS, SEM, AFM, and static contact angle measurements were performed. Ni coatings obtained from pH 3 electrolytes were selected for microreactor fabrication on the basis of characterization data, due to the reproducibility and homogeneity of the structured Ni layers. The catalytic microreactor allowed the quantitative production of CF3OF from pure reactants, on demand, and removing any criticality relative to thermal and safety control of the synthesis. The CF3O-group selective transfer ability of the synthetized hypofluorite has raised interest in pharmaceutical and agrochemical industries in recent years.
Method of synthesis and purification for trifluoromethyle hypofluorite
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Paragraph 0080-0087, (2017/09/21)
The present invention relates to a method for synthesizing and purifying trifluoromethyl hypofluorite (CF_3OF) of high purity by performing reaction of F_2 gas and COF_2 gas in the presence of a metal fluoride catalyst. The method for synthesizing and purifying CF_3OF comprises: a synthesis step (S10) of mixing F_2 gas and COF_2 gas in a reactor for a solid catalyst and performing reaction thereof; a step (S20) of primarily purifying the synthesized mixed gas (CF_3OF) in a primary purifier having the lower temperature than the boiling point; a step (S30) of secondarily purifying the primarily purified gas (CF_3OF) in a secondary purifier having the higher temperature than the boiling point.COPYRIGHT KIPO 2017
Direct fluorination of carbon monoxide in microreactors
Navarrini, Walter,Venturini, Francesco,Tortelli, Vito,Basak, Soubir,Pimparkar, Ketan P.,Adamo, Andrea,Jensen, Klavs F.
, p. 19 - 23 (2012/11/07)
Many attempts to obtain a clean stream of COF2 have been carried out in the past by means of the direct fluorination of carbon monoxide with elemental fluorine or by electrochemical fluorination. The reaction is highly exothermic, therefore dif
Process for preparing fluorohalogenethers
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Page/Page column 4, (2008/06/13)
A process for preparing fluorovinylethers having general formula: [in-line-formulae]RfO—CF═CF2 ??(IA)[/in-line-formulae]wherein Rf is a fluorinated or perfluorinated alkyl or cycloalkyl substituent; comprising the following reaction steps:1) reaction of a hypofluorite of formula RfOF, wherein Rf is as above, with an olefin of formula: [in-line-formulae]CY″Y═CY′CI ??(II)[/in-line-formulae]wherein Y, Y′ and Y″, equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y′ and Y″ are not contemporaneously hydrogen;2) dehalogenation or dehydrohalogenation of the fluorohalogenethers obtained in step 1) and obtainment of vinyl ethers of formula: [in-line-formulae]RfO—CYI═CYIIF ??(IV)[/in-line-formulae]wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H;3) fluorination with fluorine of the vinyl ethers (IV) and obtainment of fluorohalogenethers of formula: [in-line-formulae]RfO—CFYI—CF2YII ??(I)[/in-line-formulae]wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H;4) dehalogenation or dehydrohalogenation of the fluorohalogenethers (I) and obtainment of the fluorovinylethers (IA).
Process for preparing fluorohalogenethers
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Page/Page column 4, (2008/06/13)
A process for preparing perfluorovinylethers having general formula: [in-line-formulae]RfO—CF═CF2 ??(IA)[/in-line-formulae] wherein Rf is a C1-C3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of olefins of formula: [in-line-formulae]CY″Y═CY′Cl ??(II)[/in-line-formulae]wherein Y, Y′ and Y″, equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y′ and Y″ are not contemporaneously hydrogen; and obtainment of fluorohalogencarbons of formula: [in-line-formulae]FCY″Y—CY′ClF ??(III)[/in-line-formulae]wherein Y, Y′ and Y″ are as above; 2a) dehalogenation or dehydrohalogenation of the fluorohalogencarbons (III) and obtainment of fluorohalogen olefins of formula: [in-line-formulae]FCYI═CYIIF ??(IV)[/in-line-formulae]wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3a) reaction between a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), obtaining the fluorohalogenethers of formula: [in-line-formulae]RfO—CFYI—CF2YII ??(I)[/in-line-formulae]wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H; 4a) dehalogenation or dehydrohalogenation of the compounds (I) and obtainment of the perfluorovinylethers (IA).
Process for preparing fluorohalogenethers
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Page/Page column 7, (2008/06/13)
A process for preparing fluorovinylethers having general formula: ???????? RfO-CF=CF2,?????(IA) wherein Rf is a fluorinated or perfluorinated alkyl or cycloalkyl substituent; comprising the following reaction steps: 1) reaction of a hypofluorite of formula RfOF, wherein Rf is as above, with an olefin of formula: ???????? CY"Y=CY'Cl?????(II) wherein Y, Y' and Y", equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y' and Y" are not contemporaneously hydrogen; 2) dehalogenation or dehydrohalogenation of the fluorohalogenethers obtained in step 1) and obtainment of vinyl ethers of formula: ???????? RfO-CYI=CYIIF?????(IV) wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3) fluorination with fluorine of the vinyl ethers (IV) and obtainment of fluorohalogenethers of formula: ???????? RfO-CFYI-CF2YII?????(I) wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H; 4) dehalogenation or dehydrohalogenation of the fluorohalogenethers (I) and obtainment of the fluorovinylethers (IA).
Process for preparing fluorohalogenethers
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Page/Page column 8-9, (2008/06/13)
A process for preparing perfluorovinylethers having general formula: ???????? RfO-CF=CF2?????(IA) wherein Rf is a C1-C3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of olefins of formula: ???????? CY"Y=CY'Cl?????(II) wherein Y, Y' and Y", equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y' and Y" are not contemporaneously hydrogen; and obtainment of fluorohalogencarbons of formula: ???????? FCY"Y-CY'ClF?????(III) wherein Y, Y' and Y" are as above; 2a) dehalogenation or dehydrohalogenation of the fluorohalogencarbons (III) and obtainment of fluorohalogen olefins of formula: ???????? FCYI=CYIIF?????(IV) wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3a) reaction between a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), obtaining the fluorohalogenethers of formula: ???????? RfO-CFYI-CF2YII?????(I) wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H; 4a) dehalogenation or dehydrohalogenation of the compounds (I) and obtainment of the perfluorovinylethers (IA).
Reaction between carbon dioxide and elementary fluorine
Hasegawa, Yasuo,Otani, Reiko,Yonezawa, Susumu,Takashima, Masayuki
, p. 17 - 28 (2008/03/31)
Reactions between carbon dioxide and fluorine were examined at temperatures of 303-523 K under various pressure and mixture ratios of both gases. Reactions were carried out similarly under the existence of NaF, CsF and EuF3. After the reaction, fluorine was removed and the reaction products were analyzed using FT-IR, GC/FT-IR and GC/MS. The major products were CF3OF, COF2, CF4 and CF2(OF)2. The best yield of COF2 was 11.1% under the reaction condition of CO2/F2 = 76 kPa/76 kPa with temperature of 498 K for 72 h in a direct reaction. The formation rate of COF2 in the direct reaction was estimated as 0.232 dm3 mol-1 h-1 under the reaction conditions of CO2/F2 = 76 kPa/76 kPa, at 498 K. In the presence of CsF, it was estimated as 1.88 dm3 mol-1 h-1 at CO2/F2 = 76 kPa/76 kPa at 498 K. The activation energy of the COF2 formation in the direct reaction was estimated as 45.7 kJ mol-1 at CO2/F2 = 76 kPa/76 kPa at 498 K. In addition, 24.2 and 38.9 kJ mol-1 were evaluated at CO2/F2 = 76 kPa/76 kPa at 498 K, respectively, in the presence of CsF and EuF3.
