Active carbon catalyst loaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction and preparation method and application of active carbon catalyst

A technology for acetylene hydrochlorination and catalysts, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., and can solve problems affecting activity and stability, and expensive prices , achieve the effect of improving reactivity, low price and preventing agglomeration

Active Publication Date: 2021-07-23
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although adding metal additives, stabilizers, and using ionic liquids as impregnating liquids can improve the activity, the problem of stability is difficult to solve
Although traditional noble metal catalysts have good activity, they are expensive, and migration and agglomeration will occur during the reaction, which will seriously affect their activity and stability

Method used

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  • Active carbon catalyst loaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction and preparation method and application of active carbon catalyst
  • Active carbon catalyst loaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction and preparation method and application of active carbon catalyst
  • Active carbon catalyst loaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction and preparation method and application of active carbon catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Select columnar activated carbon as the carrier, the particle size is 20 mesh, and the specific surface area is 1000m 2 / g, pore volume 1mL / g.

[0043] Dissolve 41.92g of copper chloride, 0.015g of gold chloride, 22g of cobalt chloride, 50g of aluminum chloride, and 25.54g of zirconium chloride in absolute ethanol, stir to make it evenly mixed, and then dissolve the mixture at 30°C Add it dropwise onto 100g of dry activated carbon carrier, then place this mixture in an electromagnetic stirrer, set the magnetic field strength to 50T, and the treatment time is 1h, then take the mixture out of the electromagnetic stirrer, soak it for 12h, and then place it at 120 After drying at ℃ for 10 hours, a catalyst precursor containing five metals can be obtained, wherein the copper loading is 20%, the gold loading is 0.01%, and the cobalt, aluminum, and zirconium loadings are all 10%.

[0044] Then put the precursor into the electromagnetic heating furnace for rapid temperature ri...

Embodiment 2

[0047] Select the same columnar activated carbon as the carrier in Example 1.

[0048] Dissolve 90g of copper nitrate, 0.03g of gold chloride, 22g of nickel chloride, 50g of aluminum chloride, and 25.54g of zirconium chloride in absolute ethanol, stir to make it evenly mixed, and then add the mixture dropwise at 30°C Put the mixture on 100g of dry activated carbon carrier, and then put this mixture in an electromagnetic stirrer, set the magnetic field strength to 100T, and the treatment time is 1h. After drying for 10 hours, a catalyst precursor containing five metals can be obtained, wherein the copper loading is 30%, the gold loading is 0.02%, and the nickel, aluminum, and zirconium loadings are all 10%.

[0049] Then put the precursor into the electromagnetic heating furnace for rapid temperature rise treatment under the air atmosphere. First, the temperature was raised to 300 °C at a heating rate of 60 °C / min, and then cooled to room temperature naturally, and then taken o...

Embodiment 3

[0052] Select the same columnar activated carbon as the carrier in Example 1.

[0053] Dissolve 37.5g of copper sulfate, 0.017g of platinum chloride, 44g of nickel chloride, 100g of aluminum chloride, and 51.08g of zirconium chloride in absolute ethanol, stir to make it evenly mixed, and then drop the mixed liquid at 30°C Add it to 100g of dry activated carbon carrier, then put this mixture in an electromagnetic stirrer, set the magnetic field strength to 200T, and the treatment time is 1h, then take the mixture out of the electromagnetic stirrer, soak for 12h, and then After drying for 10 hours under the same conditions, a catalyst precursor containing five metals can be obtained, the loading of copper is 15%, the loading of platinum is 0.01%, and the loading of nickel, aluminum, and zirconium is 20%.

[0054] Then put the precursor into the electromagnetic heating furnace for rapid temperature rise treatment. First, the temperature was raised to 400 °C at a heating rate of 7...

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Abstract

The invention discloses an activecarbon catalystloaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction as well as a preparation method and application of the active carbon catalyst. The catalyst comprises an activated carbon carrier and a metal component loaded on the carrier, the metal component is composed of a Cu element, a metal element A and a metal element B, the metal element A represents one or two precious metal elements of Au, Ag, Pd, Pt and Ru, the metal element B is selected from two or three metal elements of Fe, Mn, Zn, K, Ca, Sn, Ni, Co, Cr, Al and In, the number of the metal elements A and B is four, and the metal element B represents one or two precious metal elements of Au, Ag, Pd, Pt and Ru. The loading capacity of the copper element is 10-30 wt%, the loading capacity of each of the A metal elements is 0.01-0.05%, and the loading capacity of each of the B metal elements is 10-30 wt%. According to the preparation method of the catalyst, a traditional impregnation method and an electromagnetic field stirring technology are combined, and the prepared catalyst shows super-long stability and super-high activity in a reaction for preparing vinyl chloride through acetylene hydrochlorination.

Description

[0001] (1) Technical field [0002] The invention relates to a catalyst for acetylene hydrochlorination, a preparation method thereof and an application in acetylene hydrochlorination. [0003] (2) Background technology [0004] With the increasing demand for polyvinyl chloride, the production of vinyl chloride monomer (VCM) in my country is also increasing year by year. The synthesis methods of vinyl chloride monomer mainly include ethylene method and acetylene method. Based on the shortage of petroleum resources and the relative abundance of coal resources in my country, the acetylene production of ethylene has always occupied a dominant position in the domestic market. This method uses mercuric chloride as a catalyst, but mercuric chloride is volatile. According to statistical estimates, the synthetic The annual loss of mercury chloride in the process is 350-700t, and the liquid mercury metal reduced in the reaction will also be lost. The loss of mercury not only causes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/34B01J37/02B01J37/08C07C17/08C07C21/06
CPCB01J23/8926B01J23/8986B01J23/8946B01J23/8966B01J23/002B01J37/342B01J37/0201B01J37/088C07C17/08B01J2523/00C07C21/06B01J2523/17B01J2523/19B01J2523/31B01J2523/48B01J2523/845B01J2523/847B01J2523/828B01J2523/72B01J2523/821B01J2523/18
Inventor 李小年赵佳丰枫岳玉学王涛冯涛于明德王婷王赛赛
Owner ZHEJIANG UNIV OF TECH
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