Method for synthesizing sec-butyl alcohol

A technology of sec-butanol and sec-butyl acetate, which is applied in alcoholysis preparation, ester group and hydroxyl reaction preparation, organic chemistry and other directions, can solve the problems of harsh reaction conditions of sec-butanol and low yield of sec-butanol, and achieve The effect of fast reaction rate, high selectivity and high conversion rate

Inactive Publication Date: 2012-10-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology converts acetic acid into other chemicals with good results at very low rates (up to 10% or even 9%). Its technical effect lies in its faster response time, higher efficiency, ability to produce specific compounds from certain starting materials, gentle reactions for use without causing damage on expensive parts like reactors used during production.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving methods for making sec-Butane (SB2) from secondary alcohols like 2-propanal without causing damage during chemical reactions that involve strong acids such as Sulphuric Acid).

Method used

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Effect test

Embodiment 1

[0018] In a volume of 1m 3 In the tank reactor, sodium methoxide is used as the catalyst, the molar ratio of the raw material sec-butyl acetate and methanol is 1:1, the mass percentage of the catalyst in the raw material liquid is 0.4%, the reaction temperature is 50 ° C, and the reaction pressure is 1 atm First, add 420.3kg of sec-butyl acetate into the reaction kettle to preheat to the reaction temperature, then dissolve 2.1kg of sodium methoxide in 116kg of methanol, heat to the reaction temperature, and then add the methanol solution into the reaction kettle for reaction. The conversion rate of sec-butyl acetate is 60.8%, and the yield of sec-butanol is 60.4%.

Embodiment 2

[0020] In a volume of 1m 3 In the tank reactor, sodium methoxide is used as the catalyst, the molar ratio of the raw material sec-butyl acetate and methanol is 1:1, the mass percentage of the catalyst in the raw material liquid is 0.38%, the reaction temperature is 60 ° C, and the reaction pressure is 1 atm First, add 420.3kg of sec-butyl acetate into the reaction kettle to preheat to the reaction temperature, then dissolve 2.1kg of sodium methoxide in 116kg of methanol, heat to the reaction temperature, and then add the methanol solution into the reaction kettle for reaction. The conversion rate of sec-butyl acetate is 55.7%, and the yield of sec-butanol is 55.3%.

Embodiment 3

[0022] In a volume of 1m 3 In the tank reactor, potassium carbonate is used as a catalyst, the molar ratio of the raw material sec-butyl acetate and methanol is 1:1.5, the mass percentage of the catalyst in the raw material liquid is 0.4%, the reaction temperature is 40 ° C, and the reaction pressure is 1 atm , first add 420.3kg of sec-butyl acetate to the reaction kettle to preheat to the reaction temperature, then dissolve 2.1kg of potassium carbonate in 116kg of methanol, heat to the reaction temperature, and then add the methanol solution to the reaction kettle for reaction. The conversion rate of sec-butyl acetate is 50.2%, and the yield of sec-butanol is 49.8%.

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Abstract

The invention discloses a method for synthesizing sec-butyl alcohol. In the method, sec-butyl acetate and methyl alcohol are used as raw materials, sec-butyl alcohol is produced by ester exchange, and the by-product is methyl acetate. The yield of sec-butyl alcohol is 50-90%. Compared with the method for preparing sec-butyl alcohol by n-butene hydration, the method is high in reaction speed, high in conversion rate and selectivity, mild in reaction conditions and less in corrosion for equipment; and the by-product methyl acetate is also an important industrial raw material.

Description

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Claims

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Application Information

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Owner FUZHOU UNIV
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