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Preparing method of tert-amyl acetate

A technology of tert-amyl acetate, esterification reaction, applied in the preparation of carboxylate, the preparation of organic compounds, chemical instruments and methods, etc., can solve problems such as low mechanical strength, and achieve the effect of increased cost

Active Publication Date: 2011-07-20
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in the reaction with water, there is a problem of low mechanical strength when using zeolite as a catalyst

Method used

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  • Preparing method of tert-amyl acetate
  • Preparing method of tert-amyl acetate
  • Preparing method of tert-amyl acetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The Amberyst-15 catalyst of filling 10ml in the tubular reactor, the number of carbon atoms is five to six (C 5 -C 6 ) of the olefin mixture and acetic acid flowed through the HPLC pump at a volumetric space velocity of 10 / h. The volume percentage of the total content of 2-methyl-1-butene (2-methyl-1-butene) and 2-methyl-2-butene (2-methyl-2-butene) in the olefin mixture used is 30 %, the other components are mainly composed of olefin isomers with five carbon elements mixed with less than 3% of hydrocarbons with six carbon elements. The molar ratio of the total content of 2-methyl-1-butene (2-methyl-1-butene) and 2-methyl-2-butene (2-methyl-2-butene) in olefin to acetic acid is 1 : 4. A water bath (Bath) was used to maintain the reaction temperature at 60° C., and a Back Pressure Regulator (Back Pressure Regulator) was installed in the reservoir (Reservior) at the rear end of the reactor to adjust the pressure to 20 atmospheres. The storage tank is cooled with dry i...

Embodiment 2

[0053] Under the same conditions as in Example 1, a zeolite having a porous surface reformed was used as a catalyst, and the zeolite was obtained by introducing 10 mol% of sulfonic acid groups to mordenite based on the amount of mordenite.

Embodiment 3

[0055] Under the same conditions as in Example 1, water is mixed in acetic acid, and the amount of water is 2-methyl-1-butene (2-methyl-1-butene) and 2-methyl-2-butene ( 5mol% of the total content of 2-methyl-2-butene).

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Abstract

The present invention relates to a method for preparing tert-amyl acetate through the reaction between an alkene compound with 5-6 carbon atoms and an acetic acid. More particularly, a low boiling point alkene mixture of fluidized catalytically cracked naphtha which is obtained through a naphtha cracking technique and contains the alkene with five to six carbon atoms in each module as the main component is used. In the mixture, only 2-methyl-1-butylene and 2-methyl-butylene are selected from the mixture for reacting with the acetic acid, and the purpose is obtaining high-purity tert-amyl acetate. Furthermore, the invention relates to a method for easily separating the alkene component which has high possibility of incomplete combustion in the low boiling point catalytically cracked naphtha.

Description

technical field [0001] The invention relates to a method for preparing tert-amyl acetate by direct esterification reaction between an olefin mixture with five to six carbon atoms and acetic acid under the catalysis of solid acid. Background technique [0002] Tert-amyl acetate has a relatively low value of maximum incremental reactivity (Maximum Incremental Reactivity, MIR), which is the measurement index of its photoreaction performance in generating ozone in the atmosphere, so it is in a favorable position in the emission regulation of volatile organic compounds. The above-mentioned volatile organic compounds are liquid or gaseous organic compounds that can easily evaporate into the atmosphere due to high vapor pressure, and can generate photochemical oxidizing substances in the atmosphere to cause photochemical smog. In addition, it is considered to be a substance that causes air pollution and is also a carcinogen and a cause of global warming. Therefore, it is subject to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/14C07C67/04
CPCA01K97/00A01K97/14
Inventor 洪承权朴载煐郑起男
Owner SK INNOVATION CO LTD
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