Alloy-phase catalyst, preparation method thereof and method for preparing higher alcohol by small molecule alcohol
A small-molecule alcohol and alloy phase technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc., can solve the problem of low selectivity, difficult separation and corrosion of higher alcohols Equipment and other issues, to achieve the effect of simple operation, easy separation and recycling, and cost saving
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Embodiment 1
[0043] (1)SnNi 3 Alloy Phase Alloy Phase Catalyst Preparation.
[0044] Wherein the mass ratio of Sn / Ni is 1 / 10. The preparation process uses SnCl 4 Immerse RaneyNi at room temperature (20°C) for 8h. After impregnation, remove moisture at 100°C under the protection of a hydrogen atmosphere, and then in 3000h -1 Reduction at 500°C for 4h in a hydrogen stream to obtain SnNi 3 alloy phase catalyst.
[0045] Such as figure 2 As shown, it can be confirmed that the embodiment of the present invention prepares SnNi by XRD diffraction pattern 3 alloy phase catalyst.
[0046] Such as image 3 shown by SnNi 3 The alloy phase electron microscope can be seen, SnNi 3 The alloy catalyst is formed by the accumulation of metal particles, and has a rich pore structure. The pore structure is composed of intercrystalline mesopores and macropores formed by particle accumulation. The average particle size is 80nm, and the average specific surface area is 47m 2 / g, the average pore size ...
Embodiment 2
[0051] (1)SnNi 3 The preparation of the alloy phase catalyst is the same as in Example 1.
[0052] (2) Preparation of higher alcohols.
[0053] Reaction raw material is the mixed solution of n-propanol and water, wherein n-propanol / water mass ratio=1, each gets 15g in the experiment; NaOH is alkali source, and alkali / alcohol molar ratio is 1 / 25, gets 0.4g in the experiment; Sn -Ni catalyst and raw material alcohol mass ratio is 1 / 30, take 0.5g in the experiment;
[0054] The reaction was carried out in a 60ml steel reactor. After the aqueous solution of n-propanol, alkali source and catalyst were added to the slurry bed reactor, the reactor body was sealed and the pressure was suppressed to 6MPa to check for leaks. After confirming that the seal was normal, the reactor was repeatedly replaced with high-purity hydrogen. Gas in the kettle until the air in the kettle is completely removed. The initial reaction pressure was 0.1 MPa, the reaction temperature was 250° C., the sti...
Embodiment 3
[0056] (1) The preparation of the Sn-Ni alloy phase catalyst is the same as in Example 1.
[0057] (2) Preparation of higher alcohols.
[0058] Reaction raw material is the mixed solution of n-butanol and water, wherein n-butanol / water mass ratio=1, each gets 15g in the experiment; NaOH is alkali source, and alkali / alcohol molar ratio is 1 / 25, gets 0.33g in the experiment; Sn -Ni catalyst and raw material alcohol mass ratio is 1 / 30, take 0.5g in the experiment;
[0059] The reaction was carried out in a 60ml steel reaction kettle. After the aqueous solution of n-butanol, alkali source and catalyst were added to the slurry bed reactor, the kettle body was sealed and the pressure was suppressed to 6MPa to check for leaks. After confirming that the seal was normal, the kettle was repeatedly replaced with high-purity hydrogen. Gas in the kettle until the air in the kettle is completely removed. The initial reaction pressure was 0.1 MPa, the reaction temperature was 250° C., the ...
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