A kind of catalyst for synthesizing isobutanol from synthesis gas, preparation method and application
A catalyst and synthesis gas technology, applied in the direction of catalyst activation/preparation, organic compound preparation, physical/chemical process catalyst, etc., can solve the problems of low carbon utilization rate, harsh reaction conditions, high selectivity, etc., to achieve increased utilization rate, Avoid waste, compose simple effects
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Embodiment 1
[0026] Weigh 20.1g Zn(NO 3 ) 2 ·6H 2 O, 50.5g Cr(NO 3 ) 3 9H 2 After O was mixed with 200ml deionized water, it was heated to 35°C and mechanically stirred for 2h to prepare mixed solution A. Mix 45.2g of citric acid, 8.5g of silicotungstic acid and 200ml of deionized water, heat to 35°C, and mechanically stir for 2 hours to prepare mixed solution B. A peristaltic pump was used to adjust the dropping rate to 30ml / min, and the above-mentioned B solution was added dropwise to the above-mentioned A solution to obtain a sol-like solution. Seal the sol-like solution and age it at room temperature for 24 hours, then mechanically stir it at 70°C for 2 hours to evaporate the solvent for further gelation, and finally place it in an oven for 5 hours at 60°C, then heat it up to 100°C for 5 hours, then dry it in a muffle furnace at 200°C for 5 hours Afterwards, the temperature was raised to 400° C. and dried for 5 h to obtain powdery solid C.
[0027] Weigh 1.4g KNO 3 Make a solut...
Embodiment 2
[0030] Weigh 31.2g Zn(CH 3 COO) 2 2H 2 O, 29.6g Cr(CH 3 COO) 3 Prepare mixed solution A with 400ml deionized water, heat to 50°C, and mechanically stir for 4h. Take 48.1g of citric acid, 9.2g of silicotungstic acid and 400ml of deionized water to prepare a mixed solution B, heat it to 50°C, and stir it mechanically for 4h. A peristaltic pump was used to adjust the dropping rate to 25ml / min, and the above solution B was added dropwise to the above solution A to obtain a sol-like solution. After aging the above solution at room temperature for 30 hours, mechanically stir at 70°C for 2 hours to evaporate the solvent to further form a gel, and finally place it in an oven for 10 hours at 70°C, then raise the temperature to 110°C for 10 hours, and then dry it in a muffle furnace at 200°C for 5 hours. The temperature was raised to 400° C. and dried for 5 h to obtain powdery solid C.
[0031] Weigh 0.8g K 2 CO 3 Dissolve it in an appropriate amount of deionized water to make a...
Embodiment 3
[0034] Weigh 22.1g Zn(NO 3 ) 2 ·6H 2 O, 54.4g Cr(NO 3 ) 3 9H 2 O and 200ml of absolute ethanol were prepared as a mixed solution A, heated to 45°C, and mechanically stirred for 2h. Take 31.6g of oxalic acid, 7.4g of silicotungstic acid and 200ml of absolute ethanol to prepare a mixed solution B, heat it to 45°C, and stir it mechanically for 2h. A peristaltic pump was used to adjust the dropping rate to 20ml / min, and the above solution B was added dropwise to the above solution A to obtain a sol-like solution. After aging the above solution at room temperature for 48 hours, mechanically stir at 70°C for 2 hours to evaporate the solvent to form a gel, and finally place it in an oven for 5 hours at 60°C, then heat it up to 100°C for 5 hours, and then dry it in a muffle furnace at 200°C for 5 hours. The temperature was raised to 400° C. and dried for 5 h to obtain powdery solid C.
[0035] Weigh 0.7g KNO 3 Make a solution with an appropriate amount of deionized water, add ...
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