Method for preparing furfuryl alcohol through furfural liquid-phase catalytic hydrogenation
A liquid-phase catalysis and hydrogen production technology, which is applied in chemical instruments and methods, Raney-type catalysts, physical/chemical process catalysts, etc. , the effect of reducing energy consumption and reducing environmental pollution
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Embodiment 1
[0014] Embodiment 1: sieve 15 grams of 200 mesh copper-aluminum alloy powders, nickel-containing 5.5% (mass %) in the alloy, 25 grams of NaOH is dissolved in 100 milliliters of deionized waters and is made into solution, under stirring state, copper-aluminum alloy powders are slowly Add it into NaOH solution, and then heat up to 70°C for activation for 1 hour. Wash with 500 ml of 60° C. deionized water until the pH is 7, and then replace the deionized water with absolute ethanol. All the above-mentioned activated skeleton copper catalysts and 200 milliliters of furfural were added to the autoclave simultaneously, and then 0.4 grams of NaOH was added. The reaction temperature in the kettle is controlled to be 130-140° C., the hydrogen pressure is 3.0 MPa, the conversion rate of furfural is 99.5%, and the selectivity of furfuryl alcohol is 97.6%.
Embodiment 2
[0015] Embodiment 2: sieve 15 grams of 200 mesh copper-aluminum alloy powders, containing molybdenum 2.0% (mass %) in the alloy, slowly join the copper-aluminum alloy powders in the hydrochloric acid solution of 2.5 mol / liter of 250 milliliters under stirring state, then Raise the temperature to 40°C to activate for 1 hour. Wash with 500 ml of 60° C. deionized water until the pH is 7, and then replace the deionized water with absolute ethanol. All the above-mentioned activated skeleton copper catalysts and 200 milliliters of furfural were added to the autoclave simultaneously, and then 0.4 grams of NaOH was added. The reaction temperature in the kettle is controlled to be 130-140° C., the hydrogen pressure is 3.0 MPa, the conversion rate of furfural is 99.4%, and the selectivity of furfuryl alcohol is 97.3%.
Embodiment 3
[0016] Embodiment 3: sieve 20 grams of 200 order copper-aluminum alloy powders, iron-containing 3.5% (mass %) in the alloy, 30 grams of NaOH is dissolved in 125 milliliters of deionized waters and is made into solution, while stirring, copper-aluminum alloy powders are slowly Add it into NaOH solution, then heat up to 60°C for 1.5 hours activation. Wash with 500 ml of deionized water at 50°C until the pH is 8, and then replace the deionized water with absolute ethanol. All the above-mentioned activated skeleton copper catalysts and 200 milliliters of furfural were added to the autoclave at the same time, and then 0.2 grams of KOH was added. The reaction temperature in the kettle is controlled to be 120-130° C., the hydrogen pressure is 4.0 MPa, the conversion rate of furfural is 99.8%, and the selectivity of furfuryl alcohol is 96.8%.
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