Catalyst for preparing 1, 1, 1, 2, 3, 3, 3-heptafluoropropane as well as preparation method and applications thereof
A technology of heptafluoropropane and catalyst, which is applied in the field of chromium carbonate-containing catalyst and its preparation, which can solve the problems of large equipment investment, high product cost, and long reaction time, and achieve the effects of short residence time, fast reaction speed, and high conversion rate
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Embodiment 1
[0027] Embodiment 1: preparation catalyst A
[0028] 50 g of Cr was mechanically mixed 2 (CO 3 ) 3 and 500 g Al 2 o 3 Mix evenly, then add 275 mL of absolute ethanol and mix well, put it into a catalyst preparation device and press it into catalyst particles, dry it in a constant temperature drying oven at 150°C for 12 hours, take it out to get catalyst A, and put it in a desiccator for later use.
Embodiment 2
[0029] Embodiment 2: preparation catalyst B
[0030] 275 g Cr was mechanically mixed 2 (CO 3 ) 3 and 275 g Al 2 o 3 Mix evenly, then add 275 mL of absolute ethanol and mix evenly, put it into a catalyst preparation device and press it into catalyst particles, dry it in a constant temperature drying oven at 140°C for 20 hours, take it out to get catalyst B, and put it in a dryer for later use.
Embodiment 3
[0031] Embodiment 3: preparation catalyst C
[0032] According to the method of embodiment 1, take by weighing 500 g Cr 2 (CO 3 ) 3 , 50 g Al 2 o 3 , mechanically mix evenly, add 275 mL of absolute ethanol to mix, put it into a catalyst preparation device and press it into catalyst particles, dry it in a constant temperature drying oven at 160°C for 10 hours, take it out to get catalyst C, and put it in a desiccator for later use.
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