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A kind of hydrodechlorination catalyst and its application in the preparation of chlorotrifluoroethylene

A technology for chlorotrifluoroethylene and hydrodechlorination, which is applied in the directions of dehalogenation preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., to simplify the preparation process, reduce the content, and improve the stability sexual effect

Active Publication Date: 2018-12-11
ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems existing in the hydrodechlorination catalyst in the prior art, provide a kind of hydrodechlorination catalyst and its preparation method, and the catalyst in CFC-113 hydrodechlorination to prepare chlorotrifluoroethylene application

Method used

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  • A kind of hydrodechlorination catalyst and its application in the preparation of chlorotrifluoroethylene
  • A kind of hydrodechlorination catalyst and its application in the preparation of chlorotrifluoroethylene

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1 Pd-Cu-Mg / AC catalyst preparation

[0031] Weigh 3.8g Cu(NO 3 ) 2 ·3H 2 O and 1.7g Mg(NO 3 ) 2 ·6H 2 O was added to 6.0ml of palladium source solution (concentration: 0.033gPd / ml), and 80.0ml of distilled water was added to dilute evenly. Take 20g of high-quality activated carbon pretreated with 5% nitric acid, add the above mixed impregnation solution, impregnate for more than 2h, and then dry at 110°C 4h, the Pd-Cu-Mg / AC catalyst was obtained.

Embodiment 2

[0032] Example 2 Preparation of Pd-Cu-Ba / AC catalyst

[0033] Weigh 3.0g Cu(NO 3 ) 2 ·3H 2 O with 0.2g Ba(NO 3 ) 2 , add 6.0ml of palladium source solution (concentration is 0.033gPd / ml), and add 80.0ml of distilled water to dilute evenly, take 20g of high-quality activated carbon pretreated with 5% nitric acid, add the above mixed impregnation solution, impregnate for more than 2h, and then dry at 110°C After 4h, the Pd-Cu-Ba / AC catalyst was obtained.

Embodiment 3

[0034] Example 3 Preparation of Pd-Cu-Sm / AC catalyst

[0035] Weigh 2.3g Cu(NO 3 ) 2 ·3H 2 O and 0.13gSm(NO 3 ) 3 , 4.85ml of palladium source solution (concentration: 0.033g Pd / ml), and add 80.0ml of distilled water to dilute evenly, take 20g of high-quality activated carbon pretreated with 5% nitric acid, add the above mixed impregnation solution, impregnate for more than 2h, and then dry at 110°C 4h, the Pd-Cu-Sm / AC catalyst was obtained.

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PUM

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Abstract

The invention discloses a hydrodechlorination catalyst. The hydrodechlorination catalyst consists of main catalysts, an adjuvant and a carrier, wherein the main catalysts are Pd and Cu, the adjuvant is selected from one or a combination of two or three or more of Mg, Ca, Ba, Co, Mo, Ni, Sm and Ce, and the main catalysts and the adjuvant are loaded onto the activated carbon carrier. The hydrodechlorination catalyst provided by the invention is applicable to the preparation of chlorotrifluoroethylene from CFC-113 through catalytic hydrodechlorination and has the advantages of long service life, high chlorotrifluoroethylene selectivity and the like.

Description

technical field [0001] The invention relates to a catalyst, in particular to a hydrodechlorination catalyst and its application in hydrodechlorination reaction. Background technique [0002] Chlorotrifluoroethylene (CTFE) is an important fluorine-containing polymer monomer, which can be used to prepare a series of fluorine coatings, fluorine resins, fluorine rubber, fluorine plastics and fluorine-chlorine lubricants, such as PCTFE, ECTFE, FEVE, etc. These fluorine-containing materials have excellent chemical inertness and weather resistance, and are widely used in cutting-edge technology, military aerospace, and electronics industries. In addition, CTFE is also an important fluorine-containing intermediate, which can be used to prepare downstream products such as trifluoroethylene, bromotrifluoroethylene, hexafluorobutadiene, trifluorostyrene, and fluorobromooil. [0003] The current industrial production of chlorotrifluoroethylene mainly adopts zinc powder reduction dechlo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/44C07C17/23C07C21/18
Inventor 刘武灿李玲石能富金佳敏马超峰
Owner ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI TECH
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