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Catalyst for acetylene hydrochlorination reaction and application thereof

An acetylene hydrochlorination and catalyst technology, applied in physical/chemical process catalysts, catalyst activation/preparation, organic chemistry, etc., can solve problems such as endangering human health, environmental pollution, etc., to promote dispersion and firm loading, and improve activity. and stabilizing and increasing the effect of the active center site

Pending Publication Date: 2021-03-30
XIAN CATALYST NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the refractory and highly toxic physical properties of mercury, the loss and disposal of mercury during use will not only cause serious environmental pollution, but also endanger human health.

Method used

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  • Catalyst for acetylene hydrochlorination reaction and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Weigh the specific surface area of ​​850m 2 Add 50.0g of flaky coconut shell activated carbon per g into a flask filled with 250mL mass concentration of 15% ammonia solution, then place the flask in a microwave radiator with a frequency of 2450MHz, set the power to 650W, and control the temperature to 85 ℃, microwave radiation for 2.5h, then the obtained mixed slurry was subjected to vacuum filtration, washed with deionized water until the pH of the filtrate was neutral, and then the filter cake was dried to a constant weight in a blast oven at 120°C to obtain pretreated activated carbon.

[0021] 2. At room temperature, add 30.0g of pretreated activated carbon to 22mL of sodium hyposulfite aqueous solution with a mass concentration of 2.5%, soak for 45min, then add 10mL of gold trichloride hydrochloric acid aqueous solution containing 0.3g of gold, and let stand for 12h , remove excess liquid, and transfer the remaining solid particles to a blast drying oven at 120...

Embodiment 2

[0023] 1. Weigh the specific surface area of ​​850m 2 Add 50.0g of flaky coconut shell activated carbon per g into a flask filled with 500mL mass concentration of 10% ammonium bicarbonate aqueous solution, then place the flask in a microwave radiator with a frequency of 2450MHz, and set the power to 750W to control the temperature 75°C, microwave radiation for 8h, then vacuum-filter the obtained mixed slurry, wash with deionized water until the pH of the filtrate is neutral, and then place the filter cake in a 120°C blast drying oven to dry to constant weight, Get pretreated activated carbon.

[0024] 2. At room temperature, add 40.0g of pretreated activated carbon to 28mL of potassium persulfate aqueous solution with a mass concentration of 4%, soak for 35min, then add 5mL of gold trichloride aqueous hydrochloric acid solution containing 0.05g of gold, and let it stand After 10 hours, the excess liquid was removed, and the remaining solid particles were transferred to a blas...

Embodiment 3

[0026] 1. Weigh the specific surface area of ​​850m 2 Add 50.0g of flaky coconut shell activated carbon per g into a flask filled with 500mL of ammonium hydrogen phosphate solution with a mass concentration of 5%, then place the flask in a microwave radiator with a frequency of 2450MHz, set the power to 850W, and control the temperature 95°C, microwave irradiation for 5.5h, then vacuum filter the obtained mixed slurry, wash with deionized water until the pH of the filtrate is neutral, and then place the filter cake in a 120°C blast drying oven to dry to constant weight , to obtain pretreated activated carbon.

[0027] 2. At room temperature, add 30.0 g of pretreated activated carbon to 22 mL of potassium thiosulfate aqueous solution with a mass concentration of 2%, soak for 60 minutes, then add 10 mL of gold trichloride aqueous hydrochloric acid solution containing 0.06 g of gold, and statically Set aside for 18 hours, remove the excess liquid, and transfer the remaining soli...

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Abstract

The invention discloses a catalyst for acetylene hydrochlorination reaction and application thereof. According to the catalyst, a gold compound is used as a catalytic active component, a potassium orsodium compound is used as a co-catalytic component, and pretreated activated carbon is used as a carrier. According to the preparation method of the catalyst, the microwave radiation nitrogen modification technology is used for pretreating the activated carbon carrier, the nitrogen element on the surface of the activated carbon is coordinated with the gold to be highly dispersed and tightly anchored on the surface of the carrier; the alkali metal element improves the surface alkalinity and reduction electrode potential of the gold, and hydrogen chloride can be adsorbed on the surface of the gold easily. The catalyst has extremely high catalytic activity and selectivity in the reaction of synthesizing vinyl chloride through acetylene hydrochlorination, and has a great industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of new chemical catalysis materials, and in particular relates to a catalyst for acetylene hydrochlorination and a preparation method thereof. The catalyst has extremely high catalytic activity and selectivity in acetylene hydrochlorination, and has great industrial application prospects. Background technique [0002] Polyvinyl chloride (PVC) has successfully replaced traditional materials such as boards, coatings, and metals due to its excellent performance, wide range of characteristics, and economical fire resistance. What is certain is that PVC will continue to play an increasingly important role in the future. PVC is mainly polymerized from vinyl chloride (VCM) monomer. Nowadays, there are three kinds of VCM production processes that are relatively mature and widely used in the world. The ethylene method of raw materials and the acetylene method of coal resources as raw materials. In foreign countrie...

Claims

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Application Information

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IPC IPC(8): B01J37/34B01J37/02B01J27/24B01J27/02B01J27/10C07C17/08C07C21/06
CPCB01J37/346B01J37/0201B01J27/24B01J27/02B01J27/10C07C17/08C07C21/06Y02P20/584
Inventor 曾利辉李霖金晓东苏雅文李小虎曾永康万克柔张之翔
Owner XIAN CATALYST NEW MATERIALS CO LTD
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