Copper-based catalyst for preparing low carbon alcohol, as well as preparation method and application of copper-based catalyst
A copper-based catalyst, low-carbon alcohol technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of low alcohol selectivity, high cost, reaction Harsh conditions and other problems, to achieve the effects of low cost, good mechanical strength, and simple preparation
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Embodiment 1
[0017] The following metal atoms are dissolved in distilled water in the form of nitrate (Si in the form of hydrosol) by mole percentage Cu 40%, Mn 40%, Fe 1%, Zn 5%, Cr 0.5%, Si 13.45% to form 0.1mol / L mixed solution. Co-precipitate with 30% sodium carbonate solution at 60°C in parallel flow, the precipitation process needs to be fully stirred, and the pH=7.0 should be maintained. The precipitate was washed with distilled water until neutral to obtain a wet filter cake. Dissolve 0.05% (mole percent) potassium (in the form of potassium carbonate) in distilled water (equal volume to the wet filter cake), add the wet filter cake obtained above and stir to form a paste, dry at 40°C and then roast at 300°C 6 hours, broken to 40-60 mesh. The CO hydrogenation reaction was carried out in a continuous flow fixed-bed reactor with a catalyst loading of 2 mL. Before the reaction, it was reduced with synthesis gas at normal pressure and 300°C for 12 hours, and then adjusted to suitable...
Embodiment 2
[0020] Dissolve the following metal atoms in the form of nitrate (Si in the form of hydrosol) by mole percentage Cu 40%, Mn 30%, Fe 1%, Zn 10%, Cr 2%, Si 16.5% in distilled water to form 0.5mol / L mixed solution. Co-precipitate with 30% sodium carbonate solution in parallel at 70°C. During the precipitation process, it needs to be fully stirred and maintain pH = 8.0. The precipitate is washed with distilled water until it is neutral, and a wet filter cake is obtained. . Dissolve 0.5% (mole percent) potassium (in the form of potassium carbonate) in distilled water (equal volume to the wet filter cake), add the wet filter cake obtained above and stir to form a paste, dry at 80°C and then roast at 350°C 4 hours, broken to 40-60 mesh. The CO hydrogenation reaction was carried out in a continuous flow fixed-bed reactor with a catalyst loading of 2 mL. Before the reaction, it was reduced with synthesis gas at normal pressure and 300°C for 12 hours, and then adjusted to suitable co...
Embodiment 3
[0023] Dissolve the following metal atoms in the form of nitrate (Si in the form of hydrosol) by mole percentage Cu 40%, Mn 25%, Fe 5%, Zn 20%, Cr 5%, Si 4% in distilled water to form 0.75mol / L mixed solution. Co-precipitate with 30% sodium carbonate solution at 90°C. During the precipitation process, it needs to be fully stirred and maintain pH=9.0. The precipitate is washed with distilled water until it is neutral, and a wet filter cake is obtained. Dissolve 1% (mole percent) potassium (in the form of potassium carbonate) in distilled water (equal volume to the wet filter cake), add the wet filter cake obtained above and stir to form a paste, dry at 100°C and then roast at 400°C 3 hours, broken to 40-60 mesh. The CO hydrogenation reaction was carried out in a continuous flow fixed-bed reactor with a catalyst loading of 2 mL. Before the reaction, it was reduced with synthesis gas at normal pressure and 300°C for 12 hours, and then adjusted to suitable conditions for the rea...
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