Application of a supported catalyst for improving the selective hydrogenation of citronellal
A supported catalyst and selective technology, applied in catalytic reaction, molecular sieve catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve problems such as difficulty, catalyst selectivity decrease, conversion rate decrease, etc. Improve selectivity and the effect of the method is simple and easy to implement
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Embodiment 1
[0027] Nitride Metallic Platinum Nanoparticles / Molecular Sieve Catalysts
[0028] Select a type A molecular sieve with a pore size of 3 angstroms, adopt the traditional method: equal volume impregnation method, impregnate the chloroplatinate solution on the molecular sieve, dry at 80°C for 10h, and reduce it at 300°C for 2h in a hydrogen atmosphere to prepare A Pt / molecular sieve supported catalyst was obtained.
[0029] Weigh 40 mg of the above-prepared Pt / 3A catalyst, and place it in a vacuum oven at 120°C for 12 hours to dry before performing the reaction to remove the gas and water that may be adsorbed in the pores of the molecular sieve. Weigh 40 mg of the dried catalyst and place it in the inner liner of a 40 mL autoclave, add 3 mL of ethyl acetate and 300 mg of 2-phenylquinoline, ultrasonicate the mixture for 2 minutes, add the rotor, fully stir for 4 h, and The poisoned mixture was centrifuged to obtain a poisoned Pt / 3A catalyst.
Embodiment 2
[0031] Nitride Metallic Platinum Nanoparticles / Molecular Sieve Catalysts
[0032] Select a type A molecular sieve with a pore size of 3 angstroms, adopt the traditional method: equal volume impregnation method, impregnate the chloroplatinate solution on the molecular sieve, dry at 80°C for 10h, and reduce it at 300°C for 2h in a hydrogen atmosphere to prepare A Pt / molecular sieve supported catalyst was obtained.
[0033] Weigh 40 mg of the above-prepared Pt / 3A catalyst, and place it in a vacuum oven at 120°C for 12 hours to dry before performing the reaction to remove the gas and water that may be adsorbed in the pores of the molecular sieve. Weigh 40 mg of the dried catalyst and place it in the lining of a 40 mL autoclave, add 3 mL of ethyl acetate and 300 μL of pyridine, ultrasonicate the mixture for 2 minutes, add the rotor, stir thoroughly for 4 hours, and centrifuge the poisoned mixture Separated to obtain a poisoned Pt / 3A catalyst.
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