A kind of catalyst for producing isobutanol by hydrogenation of methacrolein and preparation method thereof
A technology for producing methacrolein and isobutanol, which is applied in catalyst activation/preparation, hydroxyl compound preparation, chemical instruments and methods, etc., can solve problems such as low conversion rate and poor selectivity, and achieve extended life and simplified product separation. , to avoid the effect of side effects
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example 1
[0019] Take 500mL of 1M copper nitrate solution and 747mL of 1M zirconium nitrate solution and mix them. Co-precipitate the mixed solution and NaOH solution in a sedimentation tank with stirring, control the precipitation temperature to about 80°C, and neutralize for 30 minutes. at 9. Then stir and age at 80°C for 30 minutes, weigh 260g of JN-30 silica sol and add it to the above slurry, stir at 80°C for 50 minutes, wash, filter, dry, and add modification additive Ce 2 o 3 2g, granulated, roasted at 350°C for 3 hours, added 6ml of water and 6g of graphite, and finally compressed into ¢3×3mm cylindrical tablets to obtain the usable catalyst (S1).
[0020] The catalyst has a copper oxide content of 20%, a zirconia content of 40%, a silicon dioxide content of 39%, and a modification additive content of 1%.
example 2
[0022] Take 562mL of 1M copper nitrate solution and 598mL of 1M zirconium nitrate solution and mix them. Co-precipitate the mixed solution and sodium bicarbonate solution in a sedimentation tank with stirring, control the precipitation temperature to about 80°C, and neutralize for 50 minutes. The value is controlled at 9.5. Then stir and age at 80°C for 40 minutes, weigh 296g of JN-30 silica sol and add it to the above slurry, stir at 80°C for 50 minutes, wash, filter, dry, and add modification additive Ce 2 o 3 1.6g, granulated, calcined at 380°C for 3 hours, added 6ml of water and 6g of graphite, and finally pressed into tablets into ¢3×3mm to obtain the usable catalyst (S2).
[0023] The catalyst has a copper oxide content of 23%, a zirconia content of 32%, a silicon dioxide content of 45%, and a modification additive content of 0.8%.
example 3
[0025] Take 625mL of 1M copper nitrate solution and 654mL of 1M zirconium nitrate solution and mix them. Co-precipitate the mixed solution and NaOH solution in a precipitation tank with stirring, control the precipitation temperature at about 85°C, and neutralize for 30 minutes. at 9. Then stir and age at 80°C for 40 minutes, weigh 260g of JN-30 silica sol and add it to the above slurry, stir at 90°C for 50 minutes, wash, filter, dry, and add modification additive La 2 o 3 1g, granulated, calcined at 370°C for 3 hours, added 6ml of water and 6g of graphite, and finally pressed into tablets into ¢3×3mm to obtain a usable catalyst (S3).
[0026] The catalyst has a copper oxide content of 25%, a zirconia content of 35%, a silicon dioxide content of 39%, and a modification additive content of 0.5%.
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