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Preparation method of 3-pentadecylphenol

A technology of pentadecylphenol and equation, which is applied in the field of organic matter preparation, can solve the problems of high reaction cost, impossibility of industrial production, large amount of catalyst, etc., and achieve the effects of avoiding environmental pollution, increasing yield, and reducing usage

Inactive Publication Date: 2018-04-17
JIANGSU KANGHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the preparation of 3-pentadecylphenol according to the literature method has the following defects: the yield is low, the distillation residue is not easy to clean or pollutes the environment, or the amount of catalyst is large, and the reaction cost is high, so it cannot be used for industrial production.

Method used

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  • Preparation method of 3-pentadecylphenol
  • Preparation method of 3-pentadecylphenol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Adopting the palladium supported by 1% alumina as a catalyst, cashew nut oil (containing 90wt% cardanol) and Virahol with a volume ratio of 1:1 are passed through a fixed bed at a flow rate of 4ml / min, and the hydrogen pressure is 2.6MPa. 3-pentadecylphenol is obtained, the conversion rate of cashew nut oil is 100%, the yield of 3-pentadecylphenol is 89%, and no reduction in catalyst activity is seen in continuous production for 15 days.

Embodiment 2

[0018] Adopting the palladium supported by 1% alumina as a catalyst, the cashew nut oil (containing 90wt% cardanol) and Virahol with a volume ratio of 1:1 are passed through the fixed bed at a flow rate of 6ml / min, and the hydrogen pressure is 3.0MPa. 3-pentadecylphenol is obtained, the conversion rate of cashew nut oil is 100%, the yield of 3-pentadecylphenol is 88%, and no reduction in catalyst activity is seen in continuous production for 15 days.

Embodiment 3

[0020] Adopting the palladium supported by 1% alumina as a catalyst, the cashew nut oil (containing 90wt% cardanol) and Virahol with a volume ratio of 1:1 are passed through a fixed bed at a flow rate of 5ml / min, and the hydrogen pressure is 2.8MPa. 3-pentadecylphenol was obtained, the conversion rate of cashew nut oil was 100%, the yield of 3-pentadecylphenol was 89.5%, and no reduction in catalyst activity was found in continuous production for 15 days.

[0021] As can be seen from the above examples, through the catalysis of the palladium catalyst supported by alumina of the present invention, the conversion rate of cashew nut oil can reach 100%, and the product yield can reach more than 85% simultaneously; Comparatively, the catalytic effect of embodiment 3 is the best, so the loading capacity of palladium in the palladium catalyst supported by alumina is 1wt%, the best flow rate of the fixed bed is 5ml / min, and the hydrogen pressure is 2.8MPa.

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Abstract

The invention relates to a preparation method of 3-pentadecylphenol. The preparation method is characterized in that cashew nut oil containing 90wt% of anacardol is adopted as a raw material, isopropanol is adopted as a solvent, a fixed bed adopts palladium loaded with 1wt% of aluminium trioxide as a catalyst to produce the 3-pentadecylphenol continuously. The reaction equation is described in thespecification. The preparation method has the advantages that the palladium loaded with high-activity aluminium trioxide is adopted as a catalyst, and by use of the catalyst, the use amount of the catalyst can be greatly reduced; by catalysis of the catalyst, no residue or waste water is generated in the preparation process, so that the environmental pollution is avoided and the yield of productsis also greatly increased.

Description

technical field [0001] The invention relates to the technical field of organic matter preparation, in particular to a preparation method of 3-pentadecylphenol. Background technique [0002] 3-pentadecylphenol, molecular formula C 21 h 36 O, the structural formula is The relative molecular weight is 304.51, the melting point is 54.5°C, and the boiling point is 197°C (0.2KPa). It is soluble in organic solvents such as ethanol, benzene, acetone and ethyl acetate, but insoluble in water. [0003] Currently, 3-pentadecylphenol is mainly prepared from nut shell oil (hereinafter referred to as nut shell oil). The main component of husk oil is 2-pentadecenyl-6-hydroxybenzoic acid, and three kinds of 3-pentadecylphenol can be produced: [0004] 1. Steam distillation method The distillate (cardanol) obtained by steam distillation of fruit shell oil is hydrogenated to obtain 3-pentadecylphenol. This method has a short process and solves the problem that the distillation residue i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/00C07C39/06
CPCC07C37/003C07C39/06
Inventor 邱志刚
Owner JIANGSU KANGHENG CHEM