Catalyst and method for preparing 1,6-hexandiol by hydrogenation of 1,6-dimethyl adipate
A technology of dimethyl adipate and catalyst, which is applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem of increased pressure requirements of reaction equipment, increased production cost, and catalytic hydrogenation reaction pressure. Advanced problems, to achieve the effect of reducing one-time investment and production costs, and reducing the difficulty of operation
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Embodiment 1
[0015] Put 182.1 grams of copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 73 grams of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O), 73.5 grams of aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and 18.2 grams of barium nitrate (Ba(NO 3 ) 2 ·H 2 O) Dissolve in 800 ml of distilled water. Under heating and stirring, it is neutralized with alkaline solution sodium hydroxide to PH = 7, and a precipitate is formed at the same time. After filtering and washing, it is dried at 120°C for 5 hours, calcined at 400°C for 4 hours, and formed. The catalyst was reduced in a hydrogen stream at 300°C for 4 hours before use.
Embodiment 2
[0017] Put 91.6 grams of copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 182.7 grams of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O), 73.5 grams of aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and 18.2 grams of barium nitrate (Ba(NO 3 ) 2 ·H 2 O) Dissolve in 800 ml of distilled water. Under heating and stirring, it is neutralized with alkaline solution sodium carbonate to PH = 7, and a precipitate is formed at the same time. After filtering and washing, it is dried at 120°C for 5 hours, calcined at 400°C for 4 hours, and formed. The catalyst was reduced in a hydrogen stream at 300°C for 4 hours before use.
Embodiment 3
[0019] Put 91.6 grams of copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 146.2 grams of zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O), 147 grams of aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and 18.2 grams of barium nitrate (Ba(NO 3 ) 2 ·H 2 O) Dissolve in 800 ml of distilled water. Under heating and stirring, it is neutralized to PH=7 with alkali solution and ammonia water, and a precipitate is formed at the same time. After filtering and washing, it is dried at 120°C for 5 hours, and calcined at 400°C for 4 hours to form a shape. The catalyst was reduced in a hydrogen stream at 300°C for 4 hours before use.
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