CN103664555A - Method for preparing natural benzaldehyde through natural cassia oil - Google Patents
Method for preparing natural benzaldehyde through natural cassia oil Download PDFInfo
- Publication number
- CN103664555A CN103664555A CN201310624691.8A CN201310624691A CN103664555A CN 103664555 A CN103664555 A CN 103664555A CN 201310624691 A CN201310624691 A CN 201310624691A CN 103664555 A CN103664555 A CN 103664555A
- Authority
- CN
- China
- Prior art keywords
- natural
- benzaldehyde
- alkaline agent
- cassia oil
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/42—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by hydrolysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a production method, in particular to a method for preparing natural benzaldehyde through natural cassia oil. The method is characterized in that NaHCO3 and KHCO3 are proportionally mixed to be served as an alkaline agent, wherein the mass mixing ratio of NaHCO3 to KHCO3 is 1:10; the alkaline agent is dissolved in water, wherein the concentration is 3 percent and the PH value is 8 to 8.5. As the technical scheme is adopted, the method has the advantages and benefits that the product yield is increased by 13 percent, and the hydrolysis reaction time is reduced to 2 to 3 days from 6 to 7 days which are required by traditional production technology.
Description
Technical field
The present invention relates to a kind of production method, particularly the method for a kind of natural Oleum Cinnamomi natural benzaldehyde processed.
Background technology
Natural benzaldehyde generally fractionates out natural cinnamic aldehyde by natural Oleum Cinnamomi, through hydrolysis, makes, and is wherein hydrolyzed yield in 70% left and right, and major cause is that aldehyde aggregates into due to high boiling material under alkalescence.Because Oleum Cinnamomi source is few, expensive, therefore, reduce production costs, improve yield significant in actual production.
Natural Oleum Cinnamomi is containing 80% left and right cinnamic aldehyde, and in traditional alkaline water solution technique, cinnamic aldehyde, under alkaline condition, makes phenyl aldehyde through hydrolysis, produces by product acetaldehyde simultaneously.
Alkalescence (generally with NaOH or Na
2cO
3make alkaline agent) under condition, raw material cinnamic aldehyde, products benzene formaldehyde and by product acetaldehyde can occur self and mutually between condensation or polyreaction and generate by-product high boiling material, according to actually operating experience, throw in 1000kg oil of bay and approximately can obtain 400kg product.
NaOH or Na that traditional alkaline water solution technique is used
2cO
3, its pH value is more than 11, although hydrolysis reaction speed is accelerated, the speed of side reaction simultaneously is also accelerated, and product yield reduces greatly.
Summary of the invention
Technical problem to be solved by this invention is: the method for a kind of natural Oleum Cinnamomi natural benzaldehyde processed is provided, can improves the yield of natural benzaldehyde.
The technical solution adopted for the present invention to solve the technical problems is: production technique is undertaken by traditional alkaline water solution technique, it is characterized in that: by NaHCO
3and KHCO
3as alkaline agent, to mix according to a certain percentage and be dissolved in water, concentration is 3%, pH value is between 8-8.5, when hydrolysis temperature rises to 100 ℃, due to KHCO
3at this temperature, can resolve into K2CO
3, avoid the deficiency of basicity after long-time hydrolysis reaction, pH value is remained between 8-8.5, reach and both guarantee speed of response, put forward again the object of high product yield.
Owing to adopting technique scheme, advantage and positively effect that the present invention has are: product yield has improved 13%; Hydrolysis time is down to 2-3 days from traditional production technique 6-7 days.
Embodiment
Production method is: production technique is undertaken by traditional alkaline water solution technique, it is characterized in that: by NaHCO
3and KHCO
3be mixed in proportion as alkaline agent, mass mixing ratio is: NaHCO
3: KHCO
3=1:10, is dissolved in water by alkaline agent, and concentration is 3%, and pH value is between 8-8.5.
Claims (1)
1. a method for natural Oleum Cinnamomi natural benzaldehyde processed, production technique is undertaken by traditional alkaline water solution technique, it is characterized in that: by NaHCO
3and KHCO
3be mixed in proportion as alkaline agent, mass mixing ratio is: NaHCO
3: KHCO
3=1:10, is dissolved in water by alkaline agent, and concentration is 3%, and pH value is between 8-8.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624691.8A CN103664555A (en) | 2013-11-22 | 2013-11-22 | Method for preparing natural benzaldehyde through natural cassia oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624691.8A CN103664555A (en) | 2013-11-22 | 2013-11-22 | Method for preparing natural benzaldehyde through natural cassia oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103664555A true CN103664555A (en) | 2014-03-26 |
Family
ID=50303452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310624691.8A Pending CN103664555A (en) | 2013-11-22 | 2013-11-22 | Method for preparing natural benzaldehyde through natural cassia oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103664555A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100761A (en) * | 2020-01-09 | 2020-05-05 | 湖北中烟工业有限责任公司 | Preparation method of bitter apricot kernel essential oil for cigarettes |
| CN114057555A (en) * | 2021-11-02 | 2022-02-18 | 盐城市春竹香料有限公司 | Benzaldehyde preparation process and device with disodium hydrogen phosphate as alkaline catalyst |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617419A (en) * | 1985-09-26 | 1986-10-14 | International Flavors & Fragrances Inc. | Process for preparing natural benzaldehyde and acetaldehyde, natural benzaldehyde and acetaldehyde compositions, products produced thereby and organoleptic utilities therefor |
| CN101037384A (en) * | 2007-04-26 | 2007-09-19 | 华南理工大学 | Preparation method of benzaldehyde |
| CN101648853A (en) * | 2009-09-18 | 2010-02-17 | 中山大学 | Method for preparing benzaldehyde by taking hydroxypropyl-beta-cyclodextrin as accelerating agent |
| CN101985414A (en) * | 2010-09-27 | 2011-03-16 | 高要市华新香料有限公司 | Production method for natural benzaldehyde |
-
2013
- 2013-11-22 CN CN201310624691.8A patent/CN103664555A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617419A (en) * | 1985-09-26 | 1986-10-14 | International Flavors & Fragrances Inc. | Process for preparing natural benzaldehyde and acetaldehyde, natural benzaldehyde and acetaldehyde compositions, products produced thereby and organoleptic utilities therefor |
| CN101037384A (en) * | 2007-04-26 | 2007-09-19 | 华南理工大学 | Preparation method of benzaldehyde |
| CN101648853A (en) * | 2009-09-18 | 2010-02-17 | 中山大学 | Method for preparing benzaldehyde by taking hydroxypropyl-beta-cyclodextrin as accelerating agent |
| CN101985414A (en) * | 2010-09-27 | 2011-03-16 | 高要市华新香料有限公司 | Production method for natural benzaldehyde |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100761A (en) * | 2020-01-09 | 2020-05-05 | 湖北中烟工业有限责任公司 | Preparation method of bitter apricot kernel essential oil for cigarettes |
| CN111100761B (en) * | 2020-01-09 | 2022-08-26 | 湖北中烟工业有限责任公司 | Preparation method of bitter apricot kernel essential oil for cigarettes |
| CN114057555A (en) * | 2021-11-02 | 2022-02-18 | 盐城市春竹香料有限公司 | Benzaldehyde preparation process and device with disodium hydrogen phosphate as alkaline catalyst |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |