Preparation method of methyl vinyl ketone

[0027] The preparation process of dehydrogenation catalyst DH1 is as follows:

[0028] (1) Weigh 152g of copper nitrate, 80g of ytterbium nitrate and 109g of aluminum nitrate, dissolve them in 1 L of deionized water, and prepare solution A1. Weigh 30 g of potassium hydroxide and 12 g of potassium bicarbonate respectively, dissolve them in 1L of deionized water, and configure solution B1. Add 1L of deionized water into a 5L beaker, raise the temperature and maintain it at 95°C, add solutions A1 and B1 dropwise at the same time under the condition of continuous stirring, control the pH value to maintain around 9.0, and continue stirring for 2 h after the dropwise addition is completed , followed by static aging for 2 h, and filtered to obtain precipitate C1.

[0029] (2) Dry the precipitate C1 at 110°C for 24 h, then bake it at 400°C for 5 h, then add graphite powder with 3% of the weight of the precipitate as a lubricant, press it into a tablet, and then bake it at 400°C for 5...

[0033] The preparation process of dehydrogenation catalyst DH2 is as follows:

[0034] (1) Weigh 130g of copper nitrate, 175g of nickel nitrate and 86g of aluminum nitrate respectively, dissolve them in 1 L of deionized water, and prepare solution A2. Weigh 30 g of potassium hydroxide and 12 g of potassium bicarbonate respectively, dissolve them in 1L of deionized water, and configure solution B2. Add 1L of deionized water into a 5L beaker, raise the temperature and maintain it at 95°C, and add solution A2 and B2 dropwise at the same time under the condition of continuous stirring, keep the pH value at about 9.0, and continue stirring for 2 h after the dropwise addition is completed , followed by static aging for 2 h, and the precipitate C2 was obtained by filtration.

[0035] (2) Dry the precipitate C2 at 110°C for 24 h, then bake it at 400°C for 5 h, then add graphite powder with 3% of the weight of the precipitate as a lubricant, press it into a tablet, and then bake it at...

[0039] The preparation process of dehydrogenation catalyst DH3 is as follows:

[0040](1) Weigh 121g of copper nitrate, 147g of zinc nitrate and 140g of aluminum nitrate, dissolve them in 1 L of deionized water, and prepare solution A3. Weigh 30 g of potassium hydroxide and 12 g of potassium bicarbonate respectively, dissolve them in 1L of deionized water, and configure solution B3. Add 1L of deionized water into a 5L beaker, raise the temperature and maintain it at 95°C, add solutions A3 and B3 dropwise at the same time under the condition of continuous stirring, control the pH value to maintain around 9.0, and continue stirring for 2 h after the dropwise addition is completed , followed by static aging for 2 h, and the precipitate C3 was obtained by filtration.

[0041] (2) Dry the precipitate C3 at 110°C for 24 h, then roast at 400°C for 5 h, then add graphite powder with 3% of the weight of the precipitate as a lubricant, press into tablets, and then roast at 400°C for 5 ...