Preparation method of C5 fraction selective hydrogenation catalyst
A technology for selective hydrogenation and carbon five fractions, applied in the direction of catalyst activation/preparation, carbon compound catalysts, catalysts, etc., can solve the problems of increasing active components, catalyst activity decline, decline, etc.
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Embodiment 1
[0050] Catalyst CAT-1 preparation:
[0051] A commercially available bimodal pore distribution clover strip-shaped alumina carrier is used, with a diameter of 1.8-2.2 mm. After 960 calcination, the bimodal pore size distribution ranges from 11 to 16nm and 60 to 200nm, and the specific surface area is 114m 2 / g. 100 g of the carrier was weighed. The concrete preparation steps of catalyst are:
[0052] (1) Dissolve nickel nitrate and copper chloride in 80g of deionized water, add 33g of cyclohexane, 10g of Triton X-100, and 8.5g of n-butanol, fully stir to form a microemulsion, and roast the weighed 100g at high temperature The carrier was impregnated into the prepared microemulsion, shaken for 40 min, filtered off the remaining liquid, and washed with deionized water. Dry at 80°C for 6 hours and bake at 400°C for 4h. Called semi-finished catalyst A.
[0053] (2) Palladium chloride is formulated into the active component impregnation solution, and the pH is adjusted to be ...
Embodiment 2
[0071] Catalyst CAT-2 preparation:
[0072] Weigh a commercially available bimodal pore distribution spherical alumina carrier with a diameter of 2.0 mm. After calcination at 1020°C for 4 hours, the pore size distribution ranges are 13-19nm and 130-300nm respectively, and the specific surface area is 78m 2 / g, weigh the carrier 100g. The concrete preparation steps of catalyst are:
[0073] (1) palladium chloride is mixed with the active component impregnating solution, adjust pH to be 2.5, the carrier that weighed 100g high-temperature roasting is impregnated in the active component solution of palladium, after dipping for 50min, dry at 100 DEG C for 5 hours, Baking at 450°C for 4 hours. A semi-finished catalyst D is obtained.
[0074] (2) Weigh manganese nitrate and dissolve it in deionized water, immerse the semi-finished catalyst D in the prepared manganese nitrate solution, shake, after the solution is completely absorbed, dry at 130°C for 2 hours, and roast at 480°C f...
Embodiment 3
[0092] Catalyst CAT-3 preparation:
[0093] The carrier is a commercially available bimodal pore distribution spherical alumina carrier with a diameter of 3mm. After calcination at 990°C for 4 hours, the bimodal pore size distribution ranges from 12 to 20nm and 70 to 230nm, and the specific surface area is 105m 2 / g. 100 g of the carrier was weighed.
[0094] (1) Dissolve nickel chloride and copper nitrate in 70 g of deionized water, add 28 g of n-pentane, 8.3 g of CTAB, and 7.6 g of n-octanol and fully stir to form a microemulsion. Immerse 100 g of the carrier calcined at high temperature into the prepared microemulsion, shake it for 100 min, filter off the residual liquid, dry at 90 °C for 8 hours, and roast at 440 °C for 4 h to obtain semi-finished catalyst G.
[0095] (2) Dissolve palladium nitrate in 70 g of deionized water, add 28 g of n-pentane, 8.3 g of CTAB, and 7.6 g of n-octanol and fully stir to form a microemulsion. Place the semi-finished catalyst G in the pr...
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