CN104945216A - Preparation method of beta-pinene - Google Patents
Preparation method of beta-pinene Download PDFInfo
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- CN104945216A CN104945216A CN201510254990.6A CN201510254990A CN104945216A CN 104945216 A CN104945216 A CN 104945216A CN 201510254990 A CN201510254990 A CN 201510254990A CN 104945216 A CN104945216 A CN 104945216A
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- pinene
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- palladium
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Abstract
The invention discloses a preparation method of beta-pinene. The method disclosed by the invention comprises the following steps: adding alpha-pinene into a reaction kettle, adding a catalyst, adjusting the temperature to 120-180 DEG C, and carrying out an isomerization reaction for 0.5-1 hour, wherein the catalyst is a palladium catalyst taking diatomite as a carrier. According to the method disclosed by the invention, alpha-pinene is isomerized into beta-pinene by using the palladium catalyst taking diatomite as the carrier, so that the method is simple in process and easy to operate, a catalyst method is simple, and high-purity beta-pinene is obtained, therefore, the method provides a new idea for preparation of beta-pinene.
Description
Technical field
The present invention relates to forest chemical technical field, especially a kind of preparation method of beta-pinene.
Background technology
Turps is rich in the pine tree of rosin for raw material, and the terpenes mixed solution that the volatility obtained by different processing modes has aromatic odour is called turps.Terebinthine composition is different with the difference in seeds, the age of tree and the place of production, and with top grade and the one-level turps of Pinus massoniana Lamb pine gum processing, its main component is α-pinene, is secondly beta-pinene, limonene etc., also has a small amount of sesquiterpene, i.e. longifolene and caryophyllene.The preparation method of current beta-pinene mainly extracts from turps, but its content is lower, and the purity extracting the beta-pinene obtained is not high.
Summary of the invention
The object of this invention is to provide a kind of preparation method of beta-pinene, this method synthesizes beta-pinene with α-pinene isomerization, can solve the problem that beta-pinene purity is lower.
In order to solve the problem, the technical solution used in the present invention is:
The preparation method of beta-pinene of the present invention comprises the following steps: added by α-pinene in reactor, add catalyzer, adjusts the temperature to 120 DEG C ~ 180 DEG C, isomerization reaction 0.5 hour ~ 1 hour; Wherein, described catalyzer is take diatomite as the palladium catalyst of carrier.
In technique scheme, scheme can also be more specifically:
The preparation method of described catalyzer is: by diatomite sulfuric acid cleaned for several times, drying obtains diatomite support, adds distilled water, then adds palladium chloride and concentrated hydrochloric acid solution successively, stirs, and regulates pH to neutral, filters, dry.
Further, the charge capacity of palladium is 5%.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
The inventive method employing diatomite is that α-pinene isomery is turned to its technique of beta-pinene simply by the palladium catalyst of carrier, and easy to operate, catalyst method is simple, obtains highly purified beta-pinene, for the preparation of beta-pinene provides new approaches.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
The preparation method of the present embodiment beta-pinene is: added by α-pinene in reactor, add catalyzer, adjusts the temperature to 120 DEG C, isomerization reaction 0.5 hour; Wherein, described catalyzer is take diatomite as the palladium catalyst of carrier; The preparation method of the present embodiment catalyzer is: by diatomite sulfuric acid cleaned three times, drying obtains diatomite support, adds distilled water, then adds palladium chloride and concentrated hydrochloric acid solution successively, stirs, and regulates pH to 7, filters, and dries; Wherein, the charge capacity of palladium is 5%.
Embodiment 2
The preparation method of the present embodiment beta-pinene is: added by α-pinene in reactor, add catalyzer, adjusts the temperature to 150 DEG C, isomerization reaction 1 hour; Wherein, described catalyzer is take diatomite as the palladium catalyst of carrier; The preparation method of the present embodiment catalyzer is: by diatomite sulfuric acid cleaned three times, drying obtains diatomite support, adds distilled water, then adds palladium chloride and concentrated hydrochloric acid solution successively, stirs, and regulates pH to 7, filters, and dries; Wherein, the charge capacity of palladium is 5%.
Embodiment 3
The preparation method of the present embodiment beta-pinene is: added by α-pinene in reactor, add catalyzer, adjusts the temperature to 180 DEG C, isomerization reaction 0.75 hour; Wherein, described catalyzer is take diatomite as the palladium catalyst of carrier; The preparation method of the present embodiment catalyzer is: by diatomite sulfuric acid cleaned four times, drying obtains diatomite support, adds distilled water, then adds palladium chloride and concentrated hydrochloric acid solution successively, stirs, and regulates pH to 7, filters, and dries; Wherein, the charge capacity of palladium is 5%.
Claims (3)
1. a preparation method for beta-pinene, is characterized in that comprising the following steps: added by α-pinene in reactor, add catalyzer, adjusts the temperature to 120 DEG C ~ 180 DEG C, isomerization reaction 0.5 hour ~ 1 hour; Wherein, described catalyzer is take diatomite as the palladium catalyst of carrier.
2. the preparation method of beta-pinene according to claim 1, it is characterized in that the preparation method of described catalyzer is: by diatomite sulfuric acid cleaned for several times, drying obtains diatomite support, add distilled water, then add palladium chloride and concentrated hydrochloric acid solution successively, stir, regulate pH to neutral, filter, dry.
3. the preparation method of beta-pinene according to claim 2, is characterized in that the charge capacity of palladium is 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254990.6A CN104945216A (en) | 2015-05-19 | 2015-05-19 | Preparation method of beta-pinene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254990.6A CN104945216A (en) | 2015-05-19 | 2015-05-19 | Preparation method of beta-pinene |
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| CN104945216A true CN104945216A (en) | 2015-09-30 |
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| CN201510254990.6A Pending CN104945216A (en) | 2015-05-19 | 2015-05-19 | Preparation method of beta-pinene |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250118A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Palladium-based catalyst and application thereof in synthesis of hexamethylene diamine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3278623A (en) * | 1964-02-19 | 1966-10-11 | Glidden Co | Alpha pinene isomerization process and product |
| GB1129622A (en) * | 1965-09-10 | 1968-10-09 | Hoechst Ag | Process for the manufacture of ªß-pinene |
| CN101973837A (en) * | 2010-10-28 | 2011-02-16 | 岳阳昌德化工实业有限公司 | Method for purifying beta-pinene |
-
2015
- 2015-05-19 CN CN201510254990.6A patent/CN104945216A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3278623A (en) * | 1964-02-19 | 1966-10-11 | Glidden Co | Alpha pinene isomerization process and product |
| GB1129622A (en) * | 1965-09-10 | 1968-10-09 | Hoechst Ag | Process for the manufacture of ªß-pinene |
| CN101973837A (en) * | 2010-10-28 | 2011-02-16 | 岳阳昌德化工实业有限公司 | Method for purifying beta-pinene |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250118A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Palladium-based catalyst and application thereof in synthesis of hexamethylene diamine |
| CN111250118B (en) * | 2018-11-30 | 2021-06-01 | 中国科学院大连化学物理研究所 | Palladium-based catalyst and application thereof in synthesis of hexamethylene diamine |
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Application publication date: 20150930 |
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