Catalyzer for preparing furfuryl alcohol through hydrogenation in liquid phase furfural
A catalyst, a technology for preparing furfuryl alcohol, applied in the direction of organic chemistry, etc., can solve the problems of increasing catalyst cost, large cobalt metal, increasing use difficulty, etc.
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Embodiment 1
[0016] (1) Catalyst preparation process: Weigh 75.0 g of copper nitrate, 50.0 g of ammonium chromate, and 4.5 ml of 1.0 mg / ml palladium solution. Dissolve copper nitrate and ammonium chromate in about 500ml deionized water respectively to prepare a solution. Slowly add the copper nitrate solution to the ammonium chromate solution, and stir continuously at 50°C; and dropwise add the ammonia solution to make the pH of the solution about 6.5, mix to obtain a precipitate, then add the required palladium solution dropwise, and age After 5 hrs, the precipitate was washed and filtered, dried at 110°C for 20 hrs, and calcined at 330°C for 4 hrs. Catalyst samples were ground to less than 120 mesh.
[0017] (2) Reaction performance:
[0018] Weigh 5g of catalyst (<120 mesh) and 300ml of furfural into a high-pressure stainless steel reactor. After the hydrogen in the cylinder is stabilized at a constant pressure, it enters the reactor through a rotameter. At a reaction temperature of 1...
Embodiment 2
[0020] (1) Catalyst preparation process:
[0021] Weigh 76.5g of copper nitrate, 49.0g of ammonium chromate, 5.5ml of 1.0mg / ml palladium solution, and the same
[0022] Example 1.
[0023] (2) Reaction performance:
[0024] Under the conditions of 185°C and 8MPa, the conversion rate of furfural is 99.4%, and the selectivity of furfuryl alcohol is 98.1%.
Embodiment 3
[0026] (1) Catalyst preparation process:
[0027] Weigh 78.0 g of copper nitrate, 48.0 g of ammonium chromate, 6.5 ml of 1.0 mg / ml palladium solution, and the rest are the same as in Example 1.
[0028] (2) Reaction performance:
[0029] Under the conditions of 190°C and 8.5Mpa, the conversion rate of furfural is 99.7%, and the selectivity of furfuryl alcohol is 97.8%.
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