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A kind of catalyst used for producing methyl ethyl ketone and preparation method thereof

A catalyst, methyl ethyl ketone technology, applied in the field of catalysts used in the production of methyl ethyl ketone and its preparation, to achieve the effects of good hydrothermal stability, wide application range, improved accessibility and physical transfer performance

Active Publication Date: 2020-08-25
台州路豹鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned preparation processes all have the advantages of simple process, mild reaction conditions, environmental friendliness, and low production cost. However, the concentration of the raw material solution (10-90wt%) applicable to the catalyst needs to be further expanded, and the catalyst itself needs to be modified so that the raw material solution can be Further improve the selectivity of the product methyl ethyl ketone while obtaining a higher conversion rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of the used catalyst of producing methyl ethyl ketone is realized by following steps:

[0026] 1) Preparation of carrier

[0027] First add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue stirring

[0028] 1h; then add tetraethyl silicate dropwise and continue to stir for 2h, adjust the pH value to 10 with ammonia water to obtain a mixture; transfer the mixture to a polytetrafluoroethylene crystallization tank at 130°C for 72h, after After filtering and washing, dry at 105°C for 12h, and then roast at 550°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 1.0:0.05:0.02:120;

[0029] 2) Carrier pretreatment

[0030] Place the KIT molecular sieve in a 1mol / L ammonium nitrate solution for ion exchange. The operating conditions are stirring at 60°C for 15 hours,...

Embodiment 2

[0035] A kind of preparation method of catalyst used for producing methyl ethyl ketone is realized by following steps:

[0036] 1) Preparation of carrier

[0037] First add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue stirring

[0038] 1h; then add tetraethyl silicate dropwise and continue to stir for 2h, adjust the pH value to 12 with ammonia water to obtain a mixture; transfer the mixture to a polytetrafluoroethylene crystallization tank at 160°C for 48h, after After filtering and washing, dry at 105°C for 12h, and then roast at 550°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;

[0039] 2) Carrier pretreatment

[0040] Place the KIT molecular sieve in 1mol / L ammonium nitrate solution for ion exchange. The operating conditions are stirring at 80°C for 12h, followed by...

Embodiment 3

[0045] A kind of preparation method of the used catalyst of producing methyl ethyl ketone is realized by following steps:

[0046] 1) Preparation of carrier

[0047] First add sodium aluminate and water into the beaker and stir evenly, then add [choline][aspartic acid] ionic liquid and continue stirring

[0048] 1h; then add tetraethyl silicate dropwise and continue stirring for 2h, adjust the pH value to 11 with ammonia water to obtain a mixture; transfer the mixture to a polytetrafluoroethylene crystallization tank at 145°C for 60h, after After filtering and washing, dry at 105°C for 12h, and then roast at 550°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;

[0049] 2) Carrier pretreatment

[0050] Place the KIT molecular sieve in 1mol / L ammonium nitrate solution for ion exchange. The operating conditions are stirring at 70°C for 13h, foll...

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PUM

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Abstract

The invention discloses a novel catalyst used in production of methyl ethyl ketone and a preparation method thereof. The method comprises the following steps: preparing a KIT-1 molecular sieve with amesoporous structure by taking ionic liquid, namely, [choline][aspartic acid] as a template agent, wherein the KIT-1 molecular sieve is taken as a catalyst carrier; meanwhile, loading elements V and Zn onto the catalyst carrier by a supercritical impregnation technology to obtain a methyl ethyl ketone catalyst which has the advantages of insusceptibility to inactivation, high hydrothermal stability, wide application range of reaction raw material concentration (5 to 100 percent), and remarkable increase in 2,3-butanediol transformation rate and methyl ethyl ketone selectivity.

Description

technical field [0001] The invention belongs to the technical field of methyl ethyl ketone production, and relates to a catalyst used in the production of methyl ethyl ketone and a preparation method thereof. Background technique [0002] Methyl ethyl ketone is an organic solvent with outstanding properties. It has moderate boiling point, outstanding solvency, good drying characteristics, good stability, fast volatilization speed, low viscosity and low toxicity. It is a second only Ketone solvents based on acetone. Methyl ethyl ketone can be used as a solvent for polymer compounds such as polyurethane, nitrocellulose, acrylic resin, vinyl acid resin, phenolic resin, alkyd resin, ink, tape, paint, adhesive and lubricating oil dewaxing. It is the most suitable solvent for "triphenyl" Good substitute. In addition, methyl ethyl ketone is widely used in industrial fields such as coatings, inks, adhesives, magnetic tapes, oil refining, electronic components, and medicine. At pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/78B01J35/10C07C45/52C07C49/10
CPCY02P20/54
Inventor 李俊霞
Owner 台州路豹鞋业有限公司
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