Method for producing anisole by catalyzing phenol and methanol
A technology for catalyzing phenol and anisole, which is applied in chemical instruments and methods, physical/chemical process catalysts, dehydration of hydroxyl-containing compounds to prepare ethers, etc. It can solve problems such as high phenol conversion rate, low catalyst service life, and harsh conditions. Achieve the effects of simple preparation process, long service life and high conversion rate
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Embodiment 1
[0019] 1. Add 100g of zinc phosphate to 200g of deionized water, add 1g of cerium nitrate, stir at room temperature for 6h, age and dry at 90°C for 12h, put it in a muffle furnace and roast at 450°C for 6h, and cool down to room temperature to make a catalyst intermediate .
[0020] 2. Add 100g of the catalyst intermediate to 200g of deionized water, and add 0.1g of sodium fluoride, stir at room temperature for 4h, age and dry at 100°C for 12h, and roast at 450°C for 8h to prepare the catalyst.
[0021] 3. The obtained catalyst is granulated and formed into cylindrical particles with a diameter of 4 mm and a height of 4 mm, and then packed into a fixed bed reactor with a catalyst loading capacity of 30 mL, a reaction tube with an inner diameter of 28 mm, and a material of 316L stainless steel; phenol and methanol After preheating, the molar ratio is 1:3 and it passes through the fixed bed reactor continuously. Under the reaction conditions of reaction temperature 300°C, reacti...
Embodiment 2
[0023] 1. Add 100g of ferric phosphate to 300g of deionized water, add 2g of zirconium nitrate, stir at room temperature for 6h, age and dry at 90°C for 12h, put it in a muffle furnace and roast at 500°C for 4h, and cool down to room temperature to make a catalyst intermediate .
[0024] 2. Add 100g of the catalyst intermediate to 300g of deionized water and 0.4g of cesium fluoride, stir at room temperature for 4h, age and dry at 100°C for 12h, and roast at 500°C for 5h to prepare the catalyst.
[0025] 3. This step is the same as Step 3 of Example 1, and the results of the 200h reaction are shown in Table 1.
Embodiment 3
[0027] 1. Add 100g of copper phosphate to 500g of deionized water, add 5g of lanthanum nitrate, stir at room temperature for 6h, age and dry at 90°C for 12h, put it in a muffle furnace and roast at 600°C for 3h, and cool down to room temperature to make a catalyst intermediate .
[0028] 2. Add 100g of the catalyst intermediate to 500g of deionized water and 1g of potassium fluoride, stir at room temperature for 4h, age and dry at 100°C for 12h, and roast at 600°C for 4h to prepare the catalyst.
[0029] 3. This step is the same as Step 3 of Example 1, and the results of the 200h reaction are shown in Table 1.
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