Mesoporous molecular sieve supported solid acid catalyst used for santene essential-oil isomerous esterification reaction

A solid acid catalyst and mesoporous molecular sieve technology, which is applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, and the preparation of organic compounds, can solve the problems of unknown borneol content and unlabeled borneol content, and achieve the content and The effects of increased yield, easy separation, and mild catalytic reaction process

Inactive Publication Date: 2011-12-14
ANHUI JIMIN MEDICAL TECH
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Problems solved by technology

(Appendix 8) The amount of catalyst used is about 20% (1.5g/10ml). It is believed that the yield of chloroacetic acid is high, but the content of borneol is not marked, and there is no actual report on industrial production; Zhang Dongfeng, a postgrad...

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Embodiment Construction

[0012] A mesoporous molecular sieve supported solid acid catalyst for isomerization esterification of terpene essential oil, its preparation steps:

[0013] a. Preparation of mesoporous molecular sieve: dissolve 3 parts of nonionic surfactant polyethylene glycol octylphenyl ether-100 and 5 parts of cationic surfactant dodecylamine in 100 parts of 3mol L hydrochloric acid solution, stir Allow all surfactants to dissolve. Add 80-300 parts of 33% sodium silicate solution dropwise at room temperature, continue to stir slowly for 20 minutes after the dropwise addition, age for 12 hours, then heat up to 60°C for 4 hours, cool down to room temperature, filter, wash and press filter, To obtain silicon raw material; mix silicon raw material with butyl titanate and solvent cyclohexane at a ratio of 1:1 to 2:10, heat and stir for about 2 hours, and after aging for 2-30 hours, filter and remove solvent and unreacted Butyl titanate to obtain solid powdery mesoporous molecular sieves;

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Abstract

The invention discloses a mesoporous molecular sieve supported solid acid catalyst used for santene essential-oil isomerous esterification reaction. Lauryl amine and polyoxyethylene octyl phenyl ether are taken as a mixed template; a sodium silicate solution is added, stirred, heated, aged, washed and filter-pressed, thereby acquiring a silicon raw material; the silicon raw material is mixed withbutyl titanate and solvent and then is thermally stirred and aged, thereby acquiring a solid powder mesoporous molecular sieve; the solid powder mesoporous molecular sieve is mixed and stirred with phosphotungstic acid, metatitanic acid and water; and after the mixture reacts, attapulgite is added and is uniformly stirred, dried and shaped after being pelleted, thereby acquiring the mesoporous molecular sieve supported solid acid catalyst. The mesoporous molecular sieve supported solid acid catalyst has the advantages that the uniformity of a cellular structure is high, the specific surface activity is high, the selectivity is excellent, the catalyst is easily separated from a product, the catalyst can be recycled and regenerated, the environment is protected, and the like. With the help of the mesoporous molecular sieve supported solid acid catalyst, the content and the yield of the product from the santene essential-oil isomerous esterification reaction are greatly promoted.

Description

technical field [0001] The invention relates to a mesoporous molecular sieve-supported solid acid catalyst used for the isomerization esterification reaction of terpene essential oil, belonging to the technical field of chemical industry and pharmacy. Background technique [0002] As we all know, borneol, camphor, a-feminyl alcohol and terpineol are important traditional Chinese medicine raw materials used in sanitary and preventive products, disinfectants, cardiovascular diseases, refreshing and high-grade fragrance raw materials. rising trend. At present, artificially synthesized borneol, camphor, α-fenitol and other products are all based on terpene essential oils such as α-pinene and β-pinene extracted from pine resin, or eucalyptus oil and other terpene essential oils. The raw material is obtained through the process of isomerization and esterification. Therefore, the selection and preparation of catalysts for the isomerization and esterification of terpene essential ...

Claims

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Application Information

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IPC IPC(8): B01J29/89C07C35/30C07C27/02
CPCY02P20/584
Inventor 卢文清
Owner ANHUI JIMIN MEDICAL TECH
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