BaF(<i>p</i>-BDC)<sub>0.5</sub> as the Catalyst Precursor for the Catalytic Dehydrochlorination of 1-Chloro-1,1-Difluoroethane to Vinylidene Fluoride
A BaF(<i>p</i>-BDC)<sub>0.5</sub> catalyst was prepared by solid state reaction at room temperature with Ba(OH)<sub>2</sub> as precursor, NH<sub>4</sub>F as F source, and H<sub>2</sub>(<i>p</i>-BDC) as organic ligand. The calcin...
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| Autores principales: | , , , , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/afdedeb1ebbe4331bb17e327bbfca0af |
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| Sumario: | A BaF(<i>p</i>-BDC)<sub>0.5</sub> catalyst was prepared by solid state reaction at room temperature with Ba(OH)<sub>2</sub> as precursor, NH<sub>4</sub>F as F source, and H<sub>2</sub>(<i>p</i>-BDC) as organic ligand. The calcined samples were used as catalysts for dehydrochlorination of 1-chloro-1,1-difluoroethane to generate vinylidene fluoride (VDF) at 350 °C. Commercial production of VDF is carried out at 600–700 °C. Clearly, pyrolysis of the BaF(<i>p</i>-BDC)<sub>0.5</sub> catalyst provided a promising way to prepare VDF at low temperatures. Prior to calcination, the activity of the BaF(<i>p</i>-BDC)<sub>0.5</sub> catalyst was low. Following calcination at high temperatures, BaF(<i>p</i>-BDC)<sub>0.5</sub> decomposed to BaF<sub>2</sub> and BaCO<sub>3</sub>, and then the catalyst was chlorinated and fluorinated to BaClF, which showed high activity and stable VDF selectivity for dehydrochlorination of 1-Chloro-1,1-Difluoroethane to VDF. |
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