Catalyst for preparation of methyl ethyl ketone by 2,3-butanediol, and preparation method of catalyst
A technology of methyl ethyl ketone and catalyst, applied in the field of high selectivity and conversion rate catalyst and preparation of methyl ethyl ketone from 2,3-butanediol, to achieve good hydrothermal stability, enhanced penetration ability, improved accessibility and physical transfer performance Effect
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Embodiment 1
[0023] A kind of preparation method of high selectivity and conversion rate catalyst of 2,3-butanediol system methyl ethyl ketone, is to realize by following steps:
[0024] 1) Preparation of carrier
[0025] First add NaOH and deionized water into the beaker and stir evenly, then add diacetone acryloyl ammonium trifluoroacetate and [choline][phenylalanine and stir for 20 minutes; then add tetraethyl silicate dropwise to it to continue Stir for 4h; wherein, SiO in mixture A 2 , NaOH, diacetone acryloyl ammonium trifluoroacetate, [choline] [phenylalanine, the molar ratio of deionized water is 1.0:0.5:0.06:0.06:100; the mixture A is transferred to polytetrafluoroethylene crystallization The kettle was treated at 150°C for 18h, then it was filtered, washed, and heated at 105 o C for 12 hours, then at 550 o Roasting at C for 5h to obtain MCM-68 molecular sieve;
[0026] 2) Loading of active components
[0027] Dissolve cerium salt and zirconium salt in deionized water, stir a...
Embodiment 2
[0030] A kind of preparation method of high selectivity and conversion rate catalyst of 2,3-butanediol system methyl ethyl ketone, is to realize by following steps:
[0031] 1) Preparation of carrier
[0032] First add NaOH and deionized water into the beaker and stir evenly, then add diacetone acryloyl ammonium trifluoroacetate and [choline][phenylalanine] and stir for 20min; then add tetraethyl silicate dropwise to it Continue to stir for 4h; wherein, SiO in mixture A 2 , NaOH, diacetone acrylamide ammonium trifluoroacetate, [choline][phenylalanine], and deionized water in a molar ratio of 1.0:0.5:0.06:0.03:100; transfer mixture A to polytetrafluoroethylene crystal It was treated at 180°C for 12h in a kettle, then it was filtered, washed, and heated at 105 o C for 12 hours, then at 550 o Roasting at C for 5h to obtain MCM-68 molecular sieve;
[0033] 2) Loading of active components
[0034] Dissolve cerium salt and zirconium salt in deionized water, stir at room temperatu...
Embodiment 3
[0037] A kind of preparation method of high selectivity and conversion rate catalyst of 2,3-butanediol system methyl ethyl ketone, is to realize by following steps:
[0038] 1) Preparation of carrier
[0039] First add NaOH and deionized water into the beaker and stir evenly, then add diacetone acryloyl ammonium trifluoroacetate and [choline][phenylalanine] and stir for 20min; then add tetraethyl silicate dropwise to it Continue to stir for 4h; wherein, SiO in mixture A 2 , NaOH, diacetone acrylamide ammonium trifluoroacetate and [choline][phenylalanine], deionized water in a molar ratio of 1.0:0.5:0.06:0.05:100; transfer mixture A to polytetrafluoroethylene crystal It was treated at 165°C for 15h in a kettle, then it was filtered, washed, and heated at 105 o C for 12 hours, then at 550 o Roasting at C for 5h to obtain MCM-68 molecular sieve;
[0040] 2) Loading of active components
[0041] Dissolve cerium salt and zirconium salt in deionized water, stir at room temperat...
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