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Preparation method of camphene

A camphene and pinene technology, applied in the field of camphene preparation, can solve the problems of high cost and low yield, and achieve the effects of increasing yield, shortening time, and reducing dosage

Inactive Publication Date: 2015-12-16
广西梧州通轩林产化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a kind of preparation method of camphene, which can solve the problems of low yield and high cost in most of the existing camphene preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of this camphene comprises the following steps:

[0020] First put the turpentine into the distillation still, carry out heating distillation at 0MPa, and collect the α-pinene fraction; then mix 1000g of the α-pinene fraction with 100g of water, and heat to 120°C, add 50g of catalyst, Constant temperature reaction for 4 hours, prepared;

[0021] Wherein, the catalyst is prepared by the following steps:

[0022] A. Under stirring conditions, put 5g of metatitanic acid, 3g of metasilicate and 30g of 40% sodium hydroxide solution into the reactor, first stir at room temperature for 2 hours, then heat up to 120°C and continue stirring for 10 hour, filtered, and collected to obtain the first precipitate;

[0023] B. Washing the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is in the range of 7.3 to 8.0;

[0024] C, adding 10g concentration to the first precipitate after the B step...

Embodiment 2

[0030] The preparation method of this camphene comprises the following steps:

[0031] First put the turpentine into the still, conduct heating distillation at 0.01MPa, and collect the α-pinene fraction; then mix 1000g of the α-pinene fraction with 300g of water, heat to 145°C, and add 80g of catalyst , constant temperature reaction for 2 hours, prepared;

[0032] Wherein, the catalyst is prepared by the following steps:

[0033] A. Under stirring conditions, put 5g of metatitanic acid, 3g of metasilicate and 30g of 40% sodium hydroxide solution into the reactor, first stir at room temperature for 2 hours, then heat up to 120°C and continue stirring for 10 hour, filtered, and collected to obtain the first precipitate;

[0034] B. Washing the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is in the range of 7.3 to 8.0;

[0035] C, adding 10g concentration to the first precipitate after the B step treatment ...

Embodiment 3

[0041] The preparation method of this camphene comprises the following steps:

[0042] First put the turpentine into the still, carry out heating distillation at 0MPa, and collect the α-pinene fraction; then mix 1000g of the α-pinene fraction with 200g of water, and heat to 135°C, add 70g of catalyst, Constant temperature reaction for 3 hours, prepared;

[0043] Wherein, the catalyst is prepared by the following steps:

[0044] A. Under stirring conditions, put 5g of metatitanic acid, 3g of metasilicate and 30g of 40% sodium hydroxide solution into the reactor, first stir at room temperature for 2 hours, then heat up to 120°C and continue stirring for 10 hour, filtered, and collected to obtain the first precipitate;

[0045] B. Washing the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is in the range of 7.3 to 8.0;

[0046] C, adding 10g concentration to the first precipitate after the B step treatment is...

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Abstract

The invention discloses a preparation method of camphene, which belongs to the technical field of preparation of the camphene. The preparation method comprises the following steps of firstly, placing turpentine oil into a distillation still, heating and distilling the turpentine oil at the pressure of 0 to 0.01MPa, and collecting alpha-pinene fraction; secondly, according to weight parts, uniformly mixing 100 parts of alpha-pinene fraction with 10 to 30 parts of water, and heating a mixture to be 120 to 145DEG C, adding 5 to 8 parts of catalyst prepared by a special method, and reacting the mixture at a constant temperature for 2 to 4 hours to prepare the camphene. According to the preparation method disclosed by the invention, since the catalyst prepared by the special method is used in the preparation process, dosage of raw materials is effectively reduced, time for preparation is shortened, and the yield of camphene products is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of camphene preparation, in particular to a preparation method of camphene. Background technique [0002] Camphene, a bicyclic monoterpene compound, is a component of various natural volatile oils such as turpentine. It is mainly used as a raw material for organic synthesis, and can be used to synthesize camphor, spices, pesticides, isobutyl acetate thiocyanate, and isobutyl acetate Esters, toxaphene, etc. [0003] However, most of the existing camphene preparation methods have the problems of low yield and high cost. Contents of the invention [0004] The technical problem solved by the present invention is to provide a method for preparing amphene, which can solve the problems of low yield and high cost in most of the existing methods for preparing amphene. [0005] In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: [0006] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/40C07C5/25B01J23/10
Inventor 关炽昌刘涛
Owner 广西梧州通轩林产化学有限公司
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