Method for preparing anisole from phenol and methanol
A technology for the preparation of methanol and anisole, applied in the dehydration of hydroxyl-containing compounds to prepare ethers, ether preparations, chemical instruments and methods, etc., can solve the problems of being difficult to be market competitive, low catalyst service life, high production costs, etc. Low cost, long service life, and less by-products
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Embodiment 1
[0023] 1. Add 100g γ-Al 2 o 3 Add to 1000g of deionized water, add 3g of ammonium acetate, stir at 70°C for 6h, filter, wash, dry at 70°C, grind into powder and place in a tube furnace, blow in argon at 50mL / min, at 500°C Calcined at ℃ for 4h to prepare the catalyst carrier.
[0024] 2. Add 7.2g of ferric nitrate to 72g of deionized water, then add 100g of catalyst carrier, stir evenly, ultrasonicate for 20min, leave to stand at room temperature for 10h, dry at 60°C, grind into powder, and then mix it with 1.98g of ammonium fluoride Add it into 78g of deionized water, stir evenly, ultrasonicate for 20min, stand at room temperature and age for 10h, dry at 60°C, grind it into powder, put it in a tube furnace, feed argon gas at 50mL / min, and roast at 500°C 4h, the catalyst was prepared.
[0025]3. The catalyst obtained in step 2 is granulated and shaped into cylindrical particles with a diameter of 4mm and a height of 4mm, and packed into a fixed bed reactor. The catalyst load...
Embodiment 2
[0027] 1. Add 100g γ-Al 2 o 3 Add it to 1000g deionized water, add 2g ammonium acetate and 2.78g magnesium acetate, stir at 70°C for 6h, filter, wash, dry at 70°C, grind it into powder, place it in a tube furnace, and feed it at 50mL / min Argon, calcined at 500°C for 4h to obtain a catalyst carrier.
[0028] 2. Add 4.58g of magnesium nitrate to 72g of deionized water, then add 100g of catalyst carrier, stir evenly, ultrasonicate for 20min, leave it at room temperature for 10h, dry at 60°C, grind it into powder, and mix it with 1.32g of ammonium fluoride Add it into 78g of deionized water, stir evenly, ultrasonicate for 20min, stand at room temperature and age for 10h, dry at 60°C, grind it into powder, put it in a tube furnace, feed argon gas at 50mL / min, and roast at 500°C 4h, the catalyst was prepared.
[0029] 3. This step is the same as that in Example 1. After 200 hours of reaction, the conversion rate of phenol is 88.9%, and the selectivity of anisole is 91.4%.
Embodiment 3
[0031] 1. Add 100g γ-Al 2 o 3 Add it to 1000g deionized water, add 2g ammonium acetate and 2.06g calcium acetate, stir at 70°C for 6h, filter, wash, dry at 70°C, grind it into powder, place it in a tube furnace, and feed it at 50mL / min Argon, calcined at 500°C for 4h to obtain a catalyst carrier.
[0032] 2. Add 4.22g of calcium nitrate to 72g of deionized water, then add 100g of catalyst carrier, stir evenly, ultrasonicate for 20min, leave it at room temperature for 10h, dry at 60°C, grind it into powder, and mix it with 1.32g of ammonium fluoride Add it into 78g of deionized water, stir evenly, ultrasonicate for 20min, stand at room temperature and age for 10h, dry at 60°C, grind it into powder, put it in a tube furnace, feed argon gas at 50mL / min, and roast at 500°C 4h, the catalyst was prepared.
[0033] 3. This step is the same as in Example 1. After 200 hours of reaction, the conversion rate of phenol is 86.6%, and the selectivity of anisole is 93.4%.
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