Loaded quaternary ammonium salt and metal chloride catalyst and preparation method thereof

A quaternary ammonium salt and catalyst technology, which is applied in the field of supported quaternary ammonium salt and metal chloride catalysts and their preparation, can solve the problems of low activity of non-precious metal catalysts, high cost of gold and precious metal catalysts, easy deactivation and loss of mercury catalysts, etc. Achieve the effect of reducing carbon deposition and coking, low cost and less by-products

Active Publication Date: 2017-12-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of easy deactivation and loss of mercury catalysts and mercury pollution, high cost of supported gold and precious metal catalysts, low activity and poor s

Method used

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  • Loaded quaternary ammonium salt and metal chloride catalyst and preparation method thereof
  • Loaded quaternary ammonium salt and metal chloride catalyst and preparation method thereof
  • Loaded quaternary ammonium salt and metal chloride catalyst and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0029] Example 1: Weigh 1.05g of copper chloride and 2g of tetrabutylammonium chloride, dissolve them in 10mL of water, stand for 2h at 90°C, and then filter and separate to obtain the complex; using an equal volume impregnation method, the above obtained complex The substance is dissolved in 10 mL of water to completely dissolve to obtain a catalyst impregnation solution. Add 5 g of porous coal-based activated carbon support to the catalyst impregnation solution under stirring, and immerse in an oven at 60°C for 10 hours. Finally, the sample is dried in an oven at 120°C for 12 hours. The active carbon supported quaternary ammonium salt and metal chloride catalyst is prepared.

[0030] The catalyst prepared above was placed in a fixed bed reactor for activity, selectivity and stability evaluation. The reaction conditions were 140°C, molar ratio of hydrogen chloride and acetylene of 1.5:1, and acetylene space velocity of 180h -1 The acetylene conversion rate of the catalyst is 60.8...

Example Embodiment

[0031] Example 2: Weigh 0.61g of bismuth chloride and 0.05g of 2-hydroxyethyltrimethylammonium chloride, dissolve them in 10mL of ethanol, stand for 10 hours at 60°C, and then filter and separate to obtain the complex; adopt equal volume impregnation method , Dissolve the obtained complex in 10 mL of water to completely dissolve the catalyst impregnation solution, add 5 g of porous wood activated carbon support to the catalyst impregnation solution under stirring, and soak in a 60 ℃ oven for 24 hours. Finally, the sample is at 60 ℃ After drying in an oven for 12 hours, the activated carbon supported quaternary ammonium salt and metal chloride catalyst was prepared.

[0032] The catalyst prepared above was used for infrared characterization, and the infrared spectrum is attached figure 1 Shown at 1050cm -1 There is a characteristic peak of C-N stretching vibration; at 1460cm -1 And 1380cm -1 There is a characteristic peak of C-C stretching vibration of alkyl chain; at 1500cm -1 The...

Example Embodiment

[0034] Example 3: Weigh 0.88g of cobalt chloride and 1g of trimethylammonium hydantoin hydrochloride, dissolve in 10mL of acetonitrile, stand for 12h at 30°C, and then filter and separate to obtain the complex; The obtained complex was dissolved in 10 mL of water to completely dissolve to obtain a catalyst impregnation solution; 5g of porous coconut shell activated carbon carrier was added to the above catalyst impregnation solution under stirring, and immersed in an oven at 40°C for 12 hours. Finally, the sample was dried in an oven at 100°C 12h, the activated carbon supported quaternary ammonium salt and metal chloride catalyst was prepared.

[0035] The catalyst prepared above was used for infrared characterization, and the infrared spectrum is attached figure 2 Shown at 1050cm -1 There is a characteristic peak of C-N stretching vibration; at 1460cm -1 And 1380cm -1 There is a characteristic peak of C-C stretching vibration of alkyl chain nearby; at 1700cm -1 And 3400cm -1 The...

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Abstract

The invention relates to a loaded quaternary ammonium salt and metal chloride catalyst and a preparation method of the loaded quaternary ammonium salt and metal chloride catalyst. Metal chloride and quaternary ammonium salt are added into a solvent to be completely dissolved, the mass ratio of the quaternary ammonium salt to the metal chloride is (400-0.1):1, and the mixture stands at the temperature of 30-90 DEG C for 2-12 hours and is then filtered and separated to obtain a metal chloride and quaternary ammonium salt complex, the complex is dissolved in water to be completely dissolved to obtain a catalyst steeping liquor, a porous activated carbon carrier is added into the catalyst steeping liquor while being stirred and is steeped at the temperature of 60-100 DEG C for 6-24 hours, and the solvent is evaporated to dryness at the temperature of 60-120 DEG C to obtain the loaded quaternary ammonium salt and metal chloride catalyst. The catalyst reduces the reaction temperature and reduces the carbon deposition and coking in the reaction process, the service life of the catalyst is prolonged, the selectivity of a reaction product is high, the byproduct is less, and the loaded quaternary ammonium salt and metal chloride catalyst is a mercury-free catalyst which is low in cost, high in activity and high in stability.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a supported quaternary ammonium salt and metal chloride catalyst and a preparation method thereof. Background technique [0002] Polyvinyl chloride is one of the five general-purpose engineering plastics in the world, and it is widely used in various industries. The production process of polyvinyl chloride is mainly composed of vinyl chloride monomers. my country is the main consumption and production country of polyvinyl chloride, and the basic national conditions of more coal and less oil in my country determine that the production process of my country's production of vinyl chloride is acetylene hydrochlorination. The main problems encountered by the acetylene hydrochlorination process are the environmental pollution caused by the extensive use of mercury catalysts and the massive consumption of mercury resources. Now, the mercury mines in major mercury-producing countries ...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C17/08C07C21/06
CPCB01J31/1805B01J2531/0213B01J2531/0241B01J2531/16B01J2531/54B01J2531/821B01J2531/845C07C17/08C07C21/06
Inventor 张旭斌李航吴博韬王富民张金利
Owner TIANJIN UNIV
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