A kind of preparation method of copper-zinc base hydrogenation catalyst
A hydrogenation catalyst, copper-zinc technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of uneconomical and environmental protection, and achieve high BET Effect of specific surface area, high activity, and high activity copper specific surface area
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Embodiment 1
[0021] Weigh 36.24 grams of copper nitrate trihydrate and 104.12 grams of zinc nitrate hexahydrate and dissolve them in 2000 mL of deionized water to obtain a copper-zinc mixed solution. In the sample preparation bucket of deionized water, and the pH of the solution in the bucket was controlled to be 7, and the primary precipitate was obtained after filtration; the primary precipitate was first washed with water, each time with 1000mL of 20°C deionized water, washed 8 times in total, and then used for 5 ℃, 5% ammonium carbonate aqueous solution for washing, each washing with 800mL ammonium carbonate solution, stirring and washing for 5min, washing once in total, after filtering, a secondary precipitate containing copper and zinc was obtained; the secondary precipitate was heated at 70°C Dry overnight, after drying, the sample is dispersed into 800mL deionized water and stirred for 5min, after filtration, the final precipitate containing copper and zinc is obtained; the final pr...
Embodiment 2
[0025] Weigh 48.32 grams of copper nitrate trihydrate and 89.24 grams of zinc nitrate hexahydrate and dissolve them in 1500 mL of deionized water to obtain a copper-zinc mixed solution. 200mL deionized water sample preparation bucket, and control the pH of the solution in the bucket to 8, and obtain the primary precipitate after filtration; the primary precipitate is first washed with water, each time with 40 ℃ deionized water 1000mL, a total of 8 times of washing, and then used Wash with 3% ammonium carbonate aqueous solution at 20°C, use 600mL ammonium carbonate solution for each wash, stir and wash for 5min, and wash once in total. After filtration, a secondary precipitate containing copper and zinc is obtained; ℃ dried overnight, after drying, the sample was dispersed into 800mL deionized water and stirred for 5min, and the final precipitate containing copper and zinc was obtained after filtration; the final precipitate was mixed with 4.03 grams of Al 2 o 3 The powders we...
Embodiment 3
[0029] Weigh 60.4 grams of copper nitrate trihydrate and 74.37 grams of zinc nitrate hexahydrate and dissolve them in 1500 mL of deionized water to obtain a copper-zinc mixed solution. 200mL deionized water sample preparation barrel, and control the pH of the solution in the barrel to 7.5, and obtain the primary precipitate after filtration; the primary precipitate is first washed with water, each time with 60 ℃ deionized water 1000mL, washed 8 times in total, and then used 30°C, 1% by mass ammonium bicarbonate aqueous solution, 800mL of ammonium carbonate solution for each washing, stirring and washing for 5min, washing twice in total, after filtration, a secondary precipitate containing copper and zinc was obtained; the secondary precipitate was in Dry overnight at 90°C. After drying, the sample is dispersed in 800 mL of deionized water and stirred for 5 minutes. After filtration, the final precipitate containing copper and zinc is obtained; the final precipitate is mixed wit...
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