Preparation method and application of Cu-MOF catalyst in acetylene hydrochlorination reaction

A technology of acetylene hydrochlorination and catalyst, which is applied in the direction of catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc. It can solve the problem of poor conversion rate of acetylene and poor catalyst stability, etc. problems, to achieve huge energy and economic benefits, good stability, and mild conditions

Pending Publication Date: 2021-08-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The first object of the present invention is to solve the problem of poor acetylene conversion rate and poor catalyst

Method used

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  • Preparation method and application of Cu-MOF catalyst in acetylene hydrochlorination reaction

Examples

Experimental program
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Example Embodiment

[0038] Example 1

[0039] (1) Synthesis of UIO-67: 90 mg of 4,4'-biphenylene terephthalic acid, 67mg ZrCl 4 50 ml of polytetrafluoroethylene (PPL) lining was added, then 15 mL N, N-dimethylformamide (DMF) and 3 ml of acetic acid were added. After the ultrasonic dissolution, the PPL lining is placed in a stainless steel reaction vessel, sealed and heated to 120 ° C, reacted 24 h, naturally cooled to room temperature. The resulting precipitate, centrifugation was separated, washed multiple times with DMF, and after multiple solvent exchanged with acetone, dried at 120 ° C to obtain a UIO-67 material.

[0040] (2) Preparation of Catalyst Cu-UiO-67: Take the UIO-67 purified in 20G step (1) to the container. Add 1.53g Cu (BF 4 ) 2 And 10 ml of acetonitrile dip, stirred for 2 hours, centrifugally, remove the supernatant, dry dry 10 hours at 120 ° C, then perform glow discharge treatment, the vacuum pump retention system using power is 500 W is in a vacuum state, by adjusting the air flo...

Example Embodiment

[0042] Example 2

[0043] (1) To. 1.

[0044] (2) Preparation of Catalyst Cu-UiO-67: Take the UIO-67 in 20G Step (1) to add to the vessel. Add 4.76G Cu (BF 4 ) 2 And 15 ml of acetonitrile, stirred for 2 hours, centrifugation, remove the supernatant, 150 ° C for 10 hours, then the glow discharge treatment is performed, the vacuum pump is used to maintain the system in a vacuum state, by adjusting the air flow to make plasma The pressure of the body chamber is maintained at 100 PA, and the plasma treatment strength is adjusted by adjusting the discharge voltage value, and the applied voltage is 100 V, the treatment time is 1.5 h. The Cu-UIO-67 catalyst having a Cu (II) load is 6.42 wt% can be obtained.

[0045] (3) Tested, the catalyst was applied to acetylene hydrochlorination reaction in the fixed bed reactor, and at the reaction conditions: temperature 120 ° C, reaction pressure 0.01 MPa, N (HCl): N (c 2 Hide 2 ) = 1: 1, acetylene air speed 30h -1 . In the early stage of the reac...

Example Embodiment

[0046] Example 3

[0047] (1) To. 1.

[0048] (2) Preparation of Catalyst Cu-UiO-67: Take the UIO-67 in 20G Step (1) to add to the vessel. Add 3.45 g of Cucl concentration of 45 wt% 2 The tetrahydrofuran solution, stirred for 2 hours, centrifugally, remove the supernatant, dried at 160 ° C for 10 hours, then the glow discharge treatment is performed, and the vacuum pump hold system of 500 W is in a vacuum state, by adjusting the air flow to make the plasma The pressure of the chamber is maintained at 100 PA, and the plasma treatment strength is adjusted by adjusting the discharge voltage value, and the applied voltage is 120 V, and the treatment time is 1.5 h. The Cu-UIO-67 catalyst having a Cu (II) load is 3.70 wt% can be obtained.

[0049] (3) Tested, the catalyst was applied to acetylene hydrochlorination reaction in the fixed bed reactor, and at the reaction conditions: temperature 120 ° C, reaction pressure 0.01 MPa, N (HCl): N (c 2 Hide 2 ) = 1: 1, acetylene air speed 30h -1...

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Abstract

The invention discloses a preparation method and application of a Cu/MOF catalyst in acetylene hydrochlorination reaction. The Cu/MOF catalyst takes a metal organic framework material as a carrier, and the preparation method comprises the following steps: loading a bivalent copper-containing precursor on the carrier by a solution impregnation method, carrying out vacuum drying treatment, and then treating by a glow discharge method to finally obtain the Cu/MOF catalyst. The prepared Cu-MOF catalyst is applied to acetylene hydrochlorination reaction, high conversion rate and high selectivity of acetylene hydrochlorination reaction can be achieved, the stability is high, and the Cu-MOF catalyst has high economic applicability and industrial application value.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method and application of a supported copper catalyst for acetylene hydrochlorination. Background technique [0002] Polyvinyl chloride (PVC) is a widely used general-purpose plastic obtained by polymerizing vinyl chloride monomer (VCM). Polyvinyl chloride is widely used in important fields of the national economy such as industry, agriculture, and building materials. Vinyl chloride is mainly produced by calcium carbide acetylene method, ethylene dichloride cracking method, and petroleum ethylene method. my country's resource structure of "rich in coal, poor in oil, and low in gas" determines that the calcium carbide acetylene method will be the most important for a long time in the future. The main process for the production of vinyl chloride in my country is that mercury chloride catalyzes the reaction of acetylene and hydrogen chloride to produce vi...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/00B01J37/02B01J37/34C07C17/08C07C21/06
CPCB01J31/1691B01J31/2239B01J35/0066B01J37/0201B01J37/349C07C17/08B01J2231/32B01J2531/16B01J2531/48
Inventor 李小年赵佳汤奇岳玉学朱文锐王婷王涛方先华
Owner ZHEJIANG UNIV OF TECH
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