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A kind of preparation technology method of Guerbet alcohol

A technology of Guerbet alcohol and preparation process, applied in the field of preparation technology of Guerbet alcohol, can solve the problems of iodine value not meeting national standards, affecting purity and stability, etc., and achieve good economic and social benefits, and can be The effect of high controllability and good stability

Inactive Publication Date: 2016-03-30
河北威铭生物科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the iodine value of the product prepared by this method does not meet the national standard after testing, which will affect its purity and stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take by weighing 200g n-decyl alcohol, the solid base catalyst of 10% aliphatic alcohol weight, the nano-nickel powder of 1% aliphatic alcohol weight in the three-necked flask that is equipped with interpolated test thermometer, water separator, reflux condenser, nitrogen air guide tube, magnetic force Into the stirred three-necked flask, continue to feed nitrogen 0.1L / min, rapidly raise the temperature to 200°C, and react for 1.5 hours, then replace the nitrogen with hydrogen until the pressure in the reactor reaches 0.5MPa, rapidly raise the temperature to 180°C, and continue to react for 1.5 hour, after being cooled to normal temperature, the high-purity product was obtained by suction filtration, and its iodine value was determined to be 0.5.

Embodiment 2

[0021] Take by weighing 200g n-decyl alcohol, the solid base catalyst of 10% aliphatic alcohol weight, the amorphous nickel alloy of 2% aliphatic alcohol weight in the three-necked flask that is equipped with interpolated test thermometer, water separator, reflux condenser, nitrogen air guide tube 1. In the three-neck flask with magnetic stirring, continuously feed nitrogen gas 0.1L / min, and rapidly raise the temperature to 200°C. After 1.5 hours of reaction, replace the nitrogen gas with hydrogen until the pressure in the reactor reaches 1.0MPa, rapidly raise the temperature to 160°C, and continue Reacted for 1.5 hours, cooled to normal temperature, and suction filtered to obtain a high-purity product, which was determined to have an iodine value of 0.2.

Embodiment 3

[0023] Take by weighing 200g n-decyl alcohol, the solid base catalyst of 10% fatty alcohol weight, the aluminum oxide supported metal nickel catalyst of 4% fatty alcohol weight in the there-necked flask that is equipped with interpolated test thermometer, water separator, reflux condenser, nitrogen gas Into the three-neck flask with air duct and magnetic stirring, continuously feed nitrogen gas 0.1L / min, and rapidly raise the temperature to 200°C. After 1.5 hours of reaction, replace the nitrogen gas with hydrogen until the pressure in the reactor reaches 1.5MPa, and rapidly raise the temperature to 170°C , continued to react for 1.5 hours, cooled to normal temperature and filtered to obtain a high-purity product, and its iodine value was determined to be 0.1.

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PUM

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Abstract

The invention provides a process for preparing Guerbet alcohol. The process comprises the following steps: (a) weighing 100-200g of a fatty alcohol, a solid base catalyst and a nickel-based catalyst, adding into a three-necked flask which is provided with a thermometer, a water distributor, a reflux condensing tube, a nitrogen introducing tube and a magnet stirrer, introducing nitrogen into the three-necked flask continuously, increasing temperature to 200 DEG C rapidly, carrying out reaction for 1.5 hours, decreasing temperature after reaction, filtering a product of reaction at room temperature, separating the catalysts from the product of reaction, and distilling an obtained filtrate by reducing pressure to obtain a product, wherein the weight of the solid base catalyst is 5-15% of that of the fatty alcohol, and the weight of the nickel-based catalyst is 0.5-5.5% of that of the fatty alcohol; and (b) adding the product obtained in the step (a) and a nickel-based catalyst into a sealed reactor, replacing air in the reactor with nitrogen, controlling the pressure at 0.1-2.0MPa and the temperature at 120-280 DEG C with hydrogen, carrying out reaction under pressure for 1-3 hours, cooling a product of reaction to normal temperature, filtering to obtain a high-purity product, and measuring the iodine number, wherein the weight of the nickel-based catalyst is 1-5% of that of the product obtained in the step (a). The process provided by the invention has the advantages of strong operability, simple post-treatment process and significant improvement of product purity and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of Guerbet alcohol. Background technique [0002] Guerbet alcohol is a low-molecular-weight fatty alcohol undergoing aldol condensation, so that two alcohol molecules form a branched high-carbon isomeric fatty alcohol at the β-position of the hydroxyl group, which is actually an isomeric alcohol. Guerbet alcohol is a saturated alcohol, which has the characteristics of fatty primary alcohol and has good oxidation stability at high temperature; Guerbet alcohol is characterized by a large branched chain structure, high molecular weight, and is in a liquid state at low temperature, irritating Low solubility, low melting and boiling point and other characteristics; due to the special and excellent properties of Guerbet alcohol, Guerbet alcohol has good wetting performance, lubricating performance and penetration performance, and has become an important and excelle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/34C07C29/90C07C31/02C07C31/125
CPCC07C29/34C07C29/90C07C31/02C07C31/125
Inventor 姚志龙张芳周明毛进池张胜红孙培永
Owner 河北威铭生物科技有限公司