CN103880665A - Methyl stearate production method - Google Patents
Methyl stearate production method Download PDFInfo
- Publication number
- CN103880665A CN103880665A CN201210565612.6A CN201210565612A CN103880665A CN 103880665 A CN103880665 A CN 103880665A CN 201210565612 A CN201210565612 A CN 201210565612A CN 103880665 A CN103880665 A CN 103880665A
- Authority
- CN
- China
- Prior art keywords
- methanol
- reaction
- methyl stearate
- stearic acid
- production method
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a methyl stearate production method. The method comprises the following steps: adding stearic acid and methanol into a reaction kettle according to a weight part ratio of 10-20:30-50, adding paratoluenesulfonic acid having an amount accounting for 1.2% of the mass of stearic acid and 1-5 parts of zinc oxide as catalysts, heating to 100DEG C, continuously adding methanol from the bottom of the reaction kettle through a drop funnel, maintaining the entrance and exit balance of methanol, reacting for 2.5-3.5h, cooling to 50DEG C after the above reaction, washing with an aqueous solution of sodium bicarbonate, washing with water to neutrality, and carrying out negative pressure distillation to remove water in order to obtain methyl stearate. The method has the advantages of less methanol consumption, small environmental pollution, energy consumption reduction, reaction efficiency improvement, substantial shortening of the reaction time, and yield improvement.
Description
Technical field
The present invention relates to a kind of production method of methyl stearate.
Background technology
The western purport of stearic acid first is a kind of important industrial chemicals during modern industry is produced, and has important purposes at industrial circles such as detergents and cosmetic, coating, oilfield chemistries.
Summary of the invention
Technical problem to be solved by this invention is: the production method that a kind of methyl stearate is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of production method of methyl stearate, by stearic acid and the methyl alcohol ratio input reactor of 10-20:30-50 by weight, add the tosic acid of stearic acid quality 1.2% and 1-5 part zinc oxide as catalyzer, be warming up to after 100 degrees Celsius, methyl alcohol is continued to add from reactor bottom by dripping night funnel, keep methyl alcohol turnover balance, reaction 2.5-3.5 hour, after reaction finishes, be cooled to 50 degrees Celsius, with sodium bicarbonate aqueous solution washing, then be washed to neutrality, then negative pressure boils off moisture, obtains methyl stearate.
The invention has the beneficial effects as follows: methanol usage is few, environmental pollution is little, has reduced energy consumption, has improved reaction efficiency, has greatly shortened the reaction times, improves productive rate.
Embodiment
Embodiment 1
A kind of production method of methyl stearate, by stearic acid and the methyl alcohol ratio input reactor of 10-20:30-50 by weight, add the tosic acid of stearic acid quality 1.2% and 1-5 part zinc oxide as catalyzer, be warming up to after 100 degrees Celsius, methyl alcohol is continued to add from reactor bottom by dripping night funnel, keep methyl alcohol turnover balance, reaction 2.5-3.5 hour, after reaction finishes, be cooled to 50 degrees Celsius, with sodium bicarbonate aqueous solution washing, then be washed to neutrality, then negative pressure boils off moisture, obtains methyl stearate.
Claims (1)
1. the production method of a methyl stearate, it is characterized in that, by stearic acid and the methyl alcohol ratio input reactor of 10-20:30-50 by weight, add the tosic acid of stearic acid quality 1.2% and 1-5 part zinc oxide as catalyzer, be warming up to after 100 degrees Celsius, methyl alcohol is continued to add from reactor bottom by dripping night funnel, keep methyl alcohol turnover balance, reaction 2.5-3.5 hour, after reaction finishes, is cooled to 50 degrees Celsius, wash with sodium bicarbonate aqueous solution, be washed to neutrality, then negative pressure boils off moisture again, obtains methyl stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565612.6A CN103880665A (en) | 2012-12-24 | 2012-12-24 | Methyl stearate production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210565612.6A CN103880665A (en) | 2012-12-24 | 2012-12-24 | Methyl stearate production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103880665A true CN103880665A (en) | 2014-06-25 |
Family
ID=50949835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210565612.6A Pending CN103880665A (en) | 2012-12-24 | 2012-12-24 | Methyl stearate production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103880665A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317193A (en) * | 2018-11-12 | 2019-02-12 | 上海第二工业大学 | A kind of application of Fe-SAPO-34 catalyst in methyl stearate synthesis |
-
2012
- 2012-12-24 CN CN201210565612.6A patent/CN103880665A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317193A (en) * | 2018-11-12 | 2019-02-12 | 上海第二工业大学 | A kind of application of Fe-SAPO-34 catalyst in methyl stearate synthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |