Catalyst for combined production of sec-butyl alcohol and ethanol by sec-butyl acetate hydrogenation and its preparation method and use
A sec-butyl acetate and catalyst technology, which is applied in the hydrogenation of sec-butyl acetate to co-produce sec-butanol and ethanol as a catalyst and its preparation and application field, can solve the problems of low product selectivity and high hydrogen ester, and achieve a simple preparation method , high selectivity and good stability
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Embodiment 1
[0030] 100g of Cu(NO 3 ) 2 and 5.0g of Zn(NO 3 ) 2 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 180g of silica sol and dissolve it in it, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 90g of urea in another Add 500g of distilled water into the beaker to dissolve it completely, and record it as solution 3; prepare the catalyst by co-precipitation method, keep the temperature at 95°C, control the reaction end point pH=7.0, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered. Dry at 120°C for 24 hours and calcinate at 500°C for 6 hours to obtain the target product catalyst.
[0031] The catalyst prepared above was made into 20-30 mesh particles, loaded into a tubular reactor with a diameter of 12 mm, and activated at 300° C. for 6 hours under a hydrogen atmosphere. Using sec-butyl acetate as raw material, the reaction temperatur...
Embodiment 2
[0033] 100g of Cu(NO 3 ) 2 and 3.0g of Ca(NO 3 ) 2 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 160g of silica sol and dissolve it in it, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 100g of sodium carbonate in another Add 500g of distilled water into a beaker to make it completely dissolved, which is counted as solution 3. Prepare the catalyst by co-precipitation method, the precipitation temperature is 80°C, control the reaction end point pH=7.5, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered, dried at 100°C for 24 hours, and roasted at 450°C for 6 hours. That is, the target product catalyst is obtained.
[0034] The evaluation process conditions are the same as in Example 1.
Embodiment 3
[0036] 100g of Cu(NO 3 ) 2 and 5.0g of Zr(NO 3 ) 4 Put it in a beaker, add 500g of distilled water to dissolve it completely, and record it as solution 1; weigh 90g of white carbon black and dissolve it in water, then slowly drop concentrated nitric acid into it with a dropper, and record it as solution 2; put 100g of sodium carbonate in Add 500g of distilled water to another beaker to dissolve it completely, and record it as solution 3; prepare the catalyst by co-precipitation method, keep the temperature at 60°C, control the reaction end point pH=7.5, and age for 12 hours. The obtained catalyst precursor slurry is washed and filtered Afterwards, it was dried at 100°C for 24 hours and calcined at 550°C for 6 hours to obtain the target product catalyst.
[0037] The evaluation process conditions are the same as in Example 1.
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