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Separation / purification method of p-benzoquinone compound

A purification method, p-benzoquinone technology, applied in the field of separation/purification of p-benzoquinone compounds, can solve problems affecting product quality, large quinone-containing wastewater, carbonization and coking, etc., and achieve the effect of wide applicability

Inactive Publication Date: 2015-07-08
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this stripping process consumes too much energy and produces a large amount of quinone-containing wastewater. In addition, due to the relatively active chemical properties of p-benzoquinone, carbonization and coking are prone to occur in the stripping tower, which not only reduces the p-benzoquinone. Yield, and will affect product quality

Method used

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  • Separation / purification method of p-benzoquinone compound
  • Separation / purification method of p-benzoquinone compound
  • Separation / purification method of p-benzoquinone compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: The step is carried out according to Example 1 of the Chinese patent entitled "A Preparation Method of p-Benzoquinone Compound" (Application No.: 201410443854.7, submitted on September 3, 2014).

[0027] Step 2: Add 8.6 g of benzenetrifluoromethane (equivalent to 10% of the mass of the mixture) to the reaction mixture obtained in Step 1, stir at room temperature for 30 minutes, and then let it stand overnight. P-benzoquinone is precipitated and filtered to obtain P-benzoquinone 1.2g, yield 32%.

Embodiment 2-4

[0029] project Amount (g) Yield (%) 1. 15 38 2. 30 55 3. 45 63

Embodiment 5-8

[0031] project temperature( o c) Yield (%) 1. 50 35 2. 10 65 3. -30 72 4. -50 73

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PUM

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Abstract

The invention provides a separation / purification method of a p-benzoquinone compound. The method is characterized in that an accelerator for promoting aggregation / self assembly of the p-benzoquinone compound is added to a mixed liquid containing p-benzoquinone compound, so as to realize precipitation of the p-benzoquinone compound at or below room temperature and separation / purification of the p-benzoquinone compound.

Description

[0001] Cross References to Related Applications [0002] The application is entitled "A Preparation Method for P-Benzoquinone Compounds" (Application No.: 201410443854.7, submitted on September 3, 2014), "A Method for Preparing P-Benzoquinone Compounds by Direct Oxidation of Phenol Compounds" (Application No.: 201410449008.6, submitted on September 5, 2014) and "a method for the preparation of p-benzoquinone compounds by selective catalytic oxidation of phenol compounds" (application number: 201410452657.1, submitted on September 9, 2014) Chinese patent expansion and supplement. technical field [0003] The invention relates to a method for separating / purifying p-benzoquinone compounds, in particular to a method for realizing the precipitation of p-benzoquinone compounds from a mixed system containing metal ions, phenol compounds and organic solvents. Background technique [0004] P-benzoquinone compounds, such as: 1,4-benzoquinone, 2-methylbenzoquinone, 2-tert-butylbenz...

Claims

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Application Information

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IPC IPC(8): C07C46/10C07C50/04C07C50/12C07C50/18C07C50/16C07C50/02
CPCC07C46/10C07C50/04C07C50/12C07C50/18C07C50/16C07C50/02
Inventor 安增建万晓波
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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