Preparation method of 2, 3, 3, 3-tetrafluoropropene

The invention relates to a preparation method of 2, 3, 3, 3-tetrafluoropropene. The preparation method comprises the following steps: (1) mixing 2-chloro-3, 3, 3-trifluoropropene and a catalyst I to obtain a mixed material, introducing HF into the mixed material under the condition of stirring, carr...

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Bibliographic Details
Main Authors REN GUOLIANG, WANG XIN, XU QIANG, HAN CHUNHUA, DU RONGLI
Format Patent
LanguageEnglish
Published 08.04.2015
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a preparation method of 2, 3, 3, 3-tetrafluoropropene. The preparation method comprises the following steps: (1) mixing 2-chloro-3, 3, 3-trifluoropropene and a catalyst I to obtain a mixed material, introducing HF into the mixed material under the condition of stirring, carrying out reaction for 0.5-1 minute at the temperature of 0-100 DEG C, removing HF, and drying to obtain an intermediate product; and (2) mixing the intermediate product obtained in the first step and a catalyst II, carrying out reaction for 1.5-2 minutes at the temperature of 300-500 DEG C under the condition of stirring, removing HF and HCI, and drying to obtain 2, 3, 3, 3-tetrafluoropropene. The preparation method is simple in process, small in dangerousness, high in selectivity reaching up to above 85 percent, high in conversion rate reaching up to above 93 percent, low in cost, low in energy consumption, low in requirements for equipment with the reaction temperature to be only 300-500 DEG C and easy in industrial application.
Bibliography:Application Number: CN20141844164