Novel catalyst used in production of methyl ethyl ketone and preparation method thereof
A technology of catalyst and methyl ethyl ketone, which is applied in the field of new catalyst and its preparation, to achieve the effects of enhanced penetration, conversion rate and methyl ethyl ketone selectivity, and wide application range
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Embodiment 1
[0025] A kind of preparation method of the used novel catalyst of producing methyl ethyl ketone, is to realize by following steps:
[0026] 1) Preparation of carrier
[0027] Add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue to stir for 1h; then add tetraethyl silicate dropwise to it and continue to stir for 2h. The pH value was adjusted to 10 to obtain a mixture; the mixture was transferred to a polytetrafluoroethylene crystallization kettle and treated at 130°C for 72h, filtered and washed at 105 o C for 12 hours, then at 550 o Calcined at C for 5h to obtain KIT molecular sieve; wherein, SiO in the mixture 2 、Al 2 o 3 , [choline] [aspartic acid] ionic liquid, the molar ratio of deionized water is 1.0:0.05:0.02:120;
[0028] 2) Carrier pretreatment
[0029] Put the KIT molecular sieve in 1mol / L ammonium nitrate solution for ion exchange, the operating condition is stirring at 60°C for 15h, then fi...
Embodiment 2
[0034] A kind of preparation method of novel catalyst used for producing methyl ethyl ketone is realized by following steps:
[0035] 1) Preparation of carrier
[0036] Add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue to stir for 1h; then add tetraethyl silicate dropwise to it and continue to stir for 2h. The pH value was adjusted to 12 to obtain a mixture; the mixture was transferred to a polytetrafluoroethylene crystallization kettle for 48 hours at 160°C, filtered and washed at 105 o C for 12 hours, then at 550 o Calcined at C for 5h to obtain KIT molecular sieve; wherein, SiO in the mixture 2、 Al 2 o 3、 The molar ratio of [choline][aspartic acid] ionic liquid to deionized water is 1.0:0.05:0.05:120;
[0037] 2) Carrier pretreatment
[0038] Put the KIT molecular sieve in 1mol / L ammonium nitrate solution for ion exchange, the operating condition is stirring at 80°C for 12h, then filtering, washin...
Embodiment 3
[0043] A kind of preparation method of the used novel catalyst of producing methyl ethyl ketone, is to realize by following steps:
[0044] 1) Preparation of carrier
[0045] Add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue to stir for 1h; then add tetraethyl silicate dropwise to it and continue to stir for 2h. The pH value was adjusted to 11 to obtain a mixture; the mixture was transferred to a polytetrafluoroethylene crystallization kettle and treated at 145°C for 60h, filtered and washed at 105 o C for 12 hours, then at 550 o Calcined at C for 5h to obtain KIT molecular sieve; wherein, SiO in the mixture 2、 Al 2 o 3、 The molar ratio of [choline][aspartic acid] ionic liquid to deionized water is 1.0:0.05:0.035:120;
[0046] 2) Carrier pretreatment
[0047] Put the KIT molecular sieve in 1mol / L ammonium nitrate solution for ion exchange, the operating condition is stirring at 70°C for 13h, then f...
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