Method of preparing catalyst for production of acrylic acid using reactive ball milling
A catalyst and acrylic acid technology, applied in chemical instruments and methods, catalyst activation/preparation, heterogeneous catalyst chemical elements, etc., can solve problems such as low activity and low selectivity, and achieve high propane conversion rate and high acrylic acid selectivity Effect
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Embodiment 1
[0035] 1 g of the catalyst prepared in Comparative Example 1 was charged into a 60 ml container, and 15 zirconia balls with a diameter of 10 mm and 80 zirconia balls with a diameter of 5 mm were added thereto. 15 ml of water was added thereto, followed by ball milling at 150 rpm for 15 hours.
[0036] After ball milling, the catalyst and solvent are recovered. 30 cc of solvent was added thereto, followed by centrifugation at 4000 rpm for 2 hours. To detect whether impurities are leached from the catalyst, recover and observe the centrifuged solution. It was tan in color, indicating that impurities were leached. The catalyst precipitated at the bottom of the bottle was recovered, dried at 80 °C for 4 hours, and then ground in agate to obtain the final catalyst.
Embodiment 2
[0038] 1 g of the catalyst prepared in Comparative Example 1 was charged into a 60 ml container, and 15 zirconia balls with a diameter of 10 mm and 80 zirconia balls with a diameter of 5 mm were added thereto. 15 ml of ethanol was added thereto, followed by ball milling at 150 rpm for 15 hours.
[0039] After ball milling, the catalyst and solvent are recovered. 30 cc of solvent was added thereto, followed by centrifugation at 4000 rpm for 2 hours. To detect whether impurities are leached from the catalyst, recover and observe the centrifuged solution. It was tan in color, indicating that impurities were leached. The catalyst precipitated at the bottom of the bottle was recovered, dried at 80 °C for 4 hours, and then ground in agate to obtain the final catalyst.
Embodiment 3
[0041] 1 g of the catalyst prepared in Comparative Example 1 was charged into a 60 ml container, and 15 zirconia balls with a diameter of 10 mm and 80 zirconia balls with a diameter of 5 mm were added thereto. 15 ml of 1-propanol was added thereto, followed by ball milling at 150 rpm for 15 hours.
[0042] After ball milling, the catalyst and solvent are recovered. 30 cc of solvent was added thereto, followed by centrifugation at 4000 rpm for 2 hours. To detect whether impurities are leached from the catalyst, recover and observe the centrifuged solution. It was tan in color, indicating that impurities were leached. The catalyst precipitated at the bottom of the bottle was recovered, dried at 80 °C for 4 hours, and then ground in agate to obtain the final catalyst.
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