Method for preparing catalyst Cu-Uio-66 for preparing methanol from synthesis gas
A technology of cu-uio-66 and uio-66, which is applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problem of difficulty in controlling the dispersion of active components, difficulty in precise control of preparation methods, and preparation conditions Sensitivity and other issues, to achieve high stability and catalytic activity, shorten the crystallization time, high activity effect
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Embodiment 1
[0015] A preparation method of synthesis gas methanol catalyst Cu-UiO-66, the method may further comprise the steps:
[0016] Step 1, 5gCu(NO 3 ) 2 ·3H 2 0, 2.5g trimesic acid, 0.25g sodium carboxymethyl cellulose and 25g Schiffbase organically modified UiO-66 nanomaterials were added into 288g water, mixed evenly and the measured pH was 1.9, then in the ultrasonic oscillator, the ultrasonic frequency was adjusted to 35KHz, ultrasonic power 160W, ultrasonic vibration at room temperature for 10min;
[0017] Step 2. After the ultrasonic vibration is over, centrifuge the solution, take the upper solid and put it into 360ml of ethanol aqueous solution containing 1.5g of ammonium chloride, the volume ratio of ethanol to water is 1:2, and mechanically stir at a speed of 60rpm for 60min. Suction filtration obtains filter cake;
[0018] Step 3. Place the filter cake on a porous metal nickel carrier, and then place it in a microwave digester with a spraying device for reaction. Spr...
Embodiment 2
[0025] Step 1, 2.5gCu(NO 3 ) 2 ·3H 2 0, 2.5g trimesic acid, 0.25g sodium carboxymethyl cellulose and 25g Schiffbase organically modified UiO-66 nanomaterials were added into 288g water, mixed evenly and the measured pH was 1.9, then in the ultrasonic oscillator, the ultrasonic frequency was adjusted to 35KHz, ultrasonic power of 160W, ultrasonic vibration at room temperature for 10min; the rest of the steps are the same as in Example 1.
Embodiment 3
[0027] Step 3. Take 15g of the above-mentioned modified magnesium oxide powder and add it into a mixed alkali solution containing 0.5mol of sodium hydroxide and 0.1mol of anhydrous sodium carbonate and sonicate for 30min. Add 150g of MOF-199 nanomaterials to the above mixed solution under vigorous stirring at room temperature to obtain a suspension solution; All the other steps are the same as in Example 1.
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