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Technology for extracting triacontanol from natural beewax by microwave and solid strongest base catalysis method

A technology of solid super alkali and natural beeswax, which is applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve problems such as time-consuming, discharge of organic matter, pollution of alkaline wastewater, etc., and achieve shortening the effect of time

Inactive Publication Date: 2014-12-24
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for extracting triacontanol from natural beeswax by microwave and solid super alkali catalysis to solve the problems of long time consumption, pollution of alkaline wastewater, and discharge of some organic matter as wastewater in the current process. craft

Method used

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  • Technology for extracting triacontanol from natural beewax by microwave and solid strongest base catalysis method

Examples

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Effect test

Embodiment 1

[0024] refer to figure 1 , the microwave of the present invention, solid superalkali catalyzed method extract the technology of triacontanol from natural beeswax, comprise the steps:

[0025] 1. Measure 25ml of methanol into a 100ml quartz round bottom flask, mix 0.5g of beeswax with 0.15g of catalyst KF / γ-Al 2 o 3 Add them together, and heat under reflux for 10 minutes under the condition of 200 to 300W microwave power.

[0026] 2. After the reaction, the mixed solution containing triacontanol, methyl oleate, methanol and catalyst is taken out from the round bottom flask, and the solid super base is recovered by filtration.

[0027] 3. The filtered mixture was distilled under reduced pressure with a rotary evaporator to recover methanol, and the set temperature was 50°C.

[0028] 4. The residue after recovering methanol is purified by recrystallization method with ethyl acetate as solvent, the yield is 50-60%, and the content of triacontanol is determined by gas chromatogr...

Embodiment 2

[0030] With reference to Example 1, the enlarged test of the process of extracting triacontanol from natural beeswax by microwave and solid super base catalysis method of the present invention comprises the following steps:

[0031] 1. Measure 12.5 liters of methanol in a microwave reactor container of 30 liters, mix 0.25 kg of beeswax with 0.075 kg of catalyst KF / γ-Al 2 o 3 Add them together, and heat under reflux for 30min under the condition of 6 to 9kw microwave power.

[0032] 2. After the reaction, the mixed solution containing triacontanol, methyl oleate, methanol and catalyst is discharged from the microwave reactor container, and the solid superbase is recovered by filtration.

[0033] 3. The filtered mixture is distilled under reduced pressure with a 50-liter concentrator to recover methanol, the vacuum pressure is controlled at 0.06 to 0.08Mp, and the temperature is controlled below 50°C.

[0034] 4. The residue after recovering methanol is purified by recrystalli...

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Abstract

The invention discloses a technology for extracting triacontanol from natural beewax by a microwave and solid strongest base catalysis method. The technology comprises the steps of placing a certain mass of the natural beewax into a container, adding methyl alcohol according to a solid-to-liquid ratio of 1 to 50, then adding a KF / gamma-Al2O3 solid strongest base according to the amount which is 30 percent of the mass of the natural beewax, performing reaction on the natural beewax in the gram level, performing heating backflowing under a condition that the microwave power is 200-300 W for 10 min, performing reaction on the natural beewax in the kilogram level, performing backflowing heating under the condition that the microwave power is 6-9 kw for 30 min, and performing ester exchange reaction under microwave catalysis to obtain a mixed solution of triacontanol, methyl alcohol, methyl oleate and a catalyst; performing filtration, and recycling the KF / gamma-Al2O3 solid strongest base to obtain a mixed solution of triacontanol, methyl alcohol and methyl oleate; performing cyclotron evaporation, and recycling methyl alcohol to obtain a mixed solution of triacontanol and methyl oleate; then performing recrystalization to obtain triacontanol. Compared with conventional catalysts such as sodium hydroxide and potassium hydroxide under a microwave condition, the technology has the advantage that a production technology for preparing triacontanol from the natural beewax serving as a raw material in a high-efficiency, environment-friendly and low-cost manner is formed.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a process for extracting triacontanol from natural beeswax by microwave and solid superalkali catalysis. Background technique [0002] Triacontanol (1-Triacontanol) is a long-chain fatty alcohol composed of 30 carbon atoms. Its chemical name is triacontanol-1 or n-triacontanol, referred to as triacontanol or TRIA, also known as meliflora alcohol , its chemical formula is: CH 3 (CH 2 ) 28 CH 2 OH; in nature, TRIA often exists in various waxes in the form of esters combined with higher fatty acids, but also exists in free form. Studies have shown that triacontanol is a broad-spectrum, high-efficiency new animal and plant growth regulator that is harmless to humans and animals and has no pollution to the environment. Its main effects are as follows: for animals, it can improve absorption function, enhance metabolism, enhance the body's disease resistance, and increase egg and m...

Claims

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Application Information

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IPC IPC(8): C07C31/02C07C29/128
CPCY02P20/584C07C29/1285B01J21/04B01J27/12C07C29/76C07C29/78C07C31/02
Inventor 苏小建何星基周佳
Owner GUANGXI NORMAL UNIV
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