Oxidative Fluorination of Cu/ZnO Methanol Catalysts

Dybbert, Valentin; Fehr, Samuel M.; Klein, Florian; Schaadt, Achim; Hoffmann, Anke; Frei, Elias; Erdem, Emre; Ludwig, Thilo; Hillebrecht, Harald; Krossing, Ingo

doi:10.1002/ange.201811267

Cited by 8 publications

(10 citation statements)

References 57 publications

(43 reference statements)

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“…Nevertheless, the amount of HT-CO 3 2− did not seem to change after the oxidative fluorination. 33 This assumption could be confirmed by the coincidence of the TGA curves (except for the onset temperature of the HT-CO 3 2− decomposition) of the almost identical residual masses (Figure S12).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 60%

“…[37][38][39][40] After the calcination at a temperature of 573 K, the CZ_pre-catalyst and, therefore, both fluorinated samples featured a lower fraction of HT-CO 3 2− . 33 Surprisingly, the onset temperature was strongly affected by the degree of fluorination. When the fluoride content increased, the temperatures shifted to lower values.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

“…It is worth mentioning that no hydrogen consumption could be detected for the oxide samples Z, M, and ZM (as well as ZnF 2 as a ‡ H 2 -TPR experiments were performed according to the criterion of Malet and Caballero (see Eq. S7) 28 with different parameters as in the previous work, 33 allowing more information to be obtained from the evaluation. temperature / K B A reference), even at a temperature of 1273 K (not displayed).…”

Section: Figure S14mentioning

confidence: 99%

“…The water bands are caused by gaseous water in the environment of the spectrometer. Reproduced from Dybbert et al 33 calcination is limited and presumably significantly less than the amount of fluoride incorporated (1.2 or 2.7 wt%, see below).…”

Section: Thermodynamics Of the Oxidative Fluorinationmentioning

confidence: 99%

“…The F 1s spectra display two components (Figure S22, C), one located around 684.3 eV indicating the presence of CuF 2 (for CZ_200 and C_2000) 33 and one located around 686.7 eV (only present for CZ_200)…”

Section: Physical Adsorption Of Nitrogenmentioning

confidence: 99%

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Enhancement of Methanol Synthesis by Oxidative Fluorination of Cu/ZnO CatalystsInsights from Surface Analyses

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Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 60%

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Section: Figure S14mentioning

confidence: 99%

Section: Thermodynamics Of the Oxidative Fluorinationmentioning

confidence: 99%

Section: Physical Adsorption Of Nitrogenmentioning

confidence: 99%

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Enhancement of Methanol Synthesis by Oxidative Fluorination of Cu/ZnO CatalystsInsights from Surface Analyses

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Generation of Elemental Fluorine through the Electrolysis of Copper Difluoride at Room Temperature

et al. 2021

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The safe generation of F 2 gas at room temperature by using simple cell configurations has been the "holy grail" of fluorine researchf or centuries.T hus,t oa ddress this issue,w e report generation of F 2 gas through the electrolysis of CuF 2 in aCsF-2.45HF molten salt without the evolution of H 2 gas.The CuF 2 is selected through aseries of thermodynamic and kinetic assessments of possible metal fluorides.Anode assessments on graphite and glass-like carbon demonstrate the effect of the absence of the anode during generation of F 2 gas owingt o stabilized operations at room temperature.A lthough the Ni anode dissolves during electrolysis in the conventional medium-temperature cell, herein, it facilitates stable electrolysis over 100 h, achieving an F 2 gas purity of over 99 %w ith the potential to operate using one-compartment electrolysis.T his work presents asafe and propitious method for the generation of high-purity F 2 gas for small-scale lab and industrial applications.

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Generation of Elemental Fluorine through the Electrolysis of Copper Difluoride at Room Temperature

et al. 2021

View full text Add to dashboard Cite

The safe generation of F2 gas at room temperature by using simple cell configurations has been the “holy grail” of fluorine research for centuries. Thus, to address this issue, we report generation of F2 gas through the electrolysis of CuF2 in a CsF‐2.45HF molten salt without the evolution of H2 gas. The CuF2 is selected through a series of thermodynamic and kinetic assessments of possible metal fluorides. Anode assessments on graphite and glass‐like carbon demonstrate the effect of the absence of the anode during generation of F2 gas owing to stabilized operations at room temperature. Although the Ni anode dissolves during electrolysis in the conventional medium‐temperature cell, herein, it facilitates stable electrolysis over 100 h, achieving an F2 gas purity of over 99 % with the potential to operate using one‐compartment electrolysis. This work presents a safe and propitious method for the generation of high‐purity F2 gas for small‐scale lab and industrial applications.

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Oxidative Fluorination of Cu/ZnO Methanol Catalysts

Abstract: Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Cited by 8 publications

References 57 publications

Enhancement of Methanol Synthesis by Oxidative Fluorination of Cu/ZnO CatalystsInsights from Surface Analyses

Enhancement of Methanol Synthesis by Oxidative Fluorination of Cu/ZnO CatalystsInsights from Surface Analyses

Generation of Elemental Fluorine through the Electrolysis of Copper Difluoride at Room Temperature

Generation of Elemental Fluorine through the Electrolysis of Copper Difluoride at Room Temperature

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