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Nonmetal catalyst for acetylene hydrochlorination reaction and preparation method thereof

A non-metallic catalyst, acetylene hydrochlorination technology, applied in physical/chemical process catalysts, chemical instruments and methods, hydrogen halide addition preparation and other directions, can solve problems such as pollution, achieve low preparation cost, convenient operation and simple preparation Effect

Active Publication Date: 2021-05-28
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, mercury consumption and mercury pollution have become bottlenecks restricting the development of calcium carbide polyvinyl chloride industry

Method used

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  • Nonmetal catalyst for acetylene hydrochlorination reaction and preparation method thereof
  • Nonmetal catalyst for acetylene hydrochlorination reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Operation steps for preparing catalyst:

[0051] Add 10g of D-(+)-glucose to 25mL of 1M hydrochloric acid, stir to form a transparent solution, then add m-phenylenediamine and ammonium persulfate in a molar ratio of 1:1 to the clear solution, and the solution is kept at 60°C Stir for 10 min. (The molar ratio of m-phenylenediamine to D-(+)-glucose is 0.3:1)

[0052] Then the solution was added into a stainless steel hydrothermal kettle for hydrothermal treatment, kept at 160° C. for 10 h, and then filtered to obtain a sample. After the sample was washed with water and ethanol for 10 h, it was suction filtered, and the sample obtained by suction filtration was placed in an oven and dried at 80° C. for 24 h. Control nitrogen and carbon. In inert gas N 2 Under atmosphere, the temperature was raised from room temperature to 800° C. at a rate of 5° C. / min, and kept for 2 hours to obtain the non-metallic catalyst. The obtained metal-free catalyst was named 0.3mPDA-C-800. ...

Embodiment 2

[0060] The amines used in this embodiment are o-phenylenediamine, m-phenylenediamine and p-phenylenediamine respectively. Other preparations and reaction conditions are the same as in Example 1. The conversion rate of vinyl chloride is shown in Table 1.

[0061] Table 1 Effect of different amine species on acetylene hydrochlorination

[0062] O-phenylenediamine m-phenylenediamine p-phenylenediamine Vinyl chloride conversion (%) 64.58 96.41 76.41

[0063] From the data in Table 1, it can be concluded that the conversion rate of vinyl chloride presents different conversion rates with the addition of different amine species. Among them, the addition of m-phenylenediamine has the most obvious promoting effect on the hydrochlorination of acetylene.

Embodiment 3

[0065] In this example, the molar ratios of phenylenediamine and ammonium persulfate are 1:0.5, 1:1, 1:1.5, and 1:2, respectively. Other preparations and reaction conditions are the same as in Example 1. The conversion rate of vinyl chloride is shown in Table 2.

[0066] The impact of table 2 m-phenylenediamine and ammonium persulfate molar ratio on acetylene hydrochlorination

[0067] The molar ratio of m-phenylenediamine and ammonium persulfate 1:0.5 1:1 1:1.5 1:2 Vinyl chloride conversion (%) 95.87 96.41 85.38 83.68

[0068] From the data in Table 2, it can be concluded that with the increase of ammonium persulfate addition, the conversion rate of vinyl chloride presents a trend of first increasing and then decreasing. Among them, when the ratio of m-phenylenediamine and ammonium persulfate is 1:1, the effect of promoting the hydrochlorination of acetylene is the most obvious.

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Abstract

The invention relates to a non-metal catalyst for acetylene hydrochlorination reaction and a preparation method of the non-metal catalyst. The preparation method of the non-metal catalyst for acetylene hydrochlorination reaction comprises the following steps: adding glucose, amine and ammonium persulfate into a hydrochloric acid solution, stirring the mixture, carrying out hydrothermal treatment, and performing filtering, washing, drying and calcining treatment to obtain the non-metal catalyst. According to the nonmetal catalyst for the acetylene hydrochlorination reaction and the preparation method, the nonmetal catalyst is formed by polymerizing amine and glucose, and the self-polymerization reaction of glucose is inhibited in the polymerization process, so that a nonmetal carbon-nitrogen material with a regulated structure is obtained, the catalyst has relatively high catalyst activity, the preparation condition is mild, the process is simple, and the catalyst is short in preparation period, low in cost and suitable for acetylene hydrochlorination reaction.

Description

technical field [0001] The invention belongs to the field of acetylene hydrochlorination, and in particular relates to a non-metal catalyst for acetylene hydrochlorination and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is the first synthetic resin material in China and the second in the world. With electrical insulation, flame retardancy and corrosion resistance, it is widely used in various fields such as construction, infrastructure, packaging, electrical and service industries. China is the world's largest PVC consumer and producer. China's annual PVC production is on the rise, and its annual output accounts for more than half of the world's PVC production. Similarly, China's annual PVC consumption also accounts for one-fifth of the world's total consumption. [0003] Polyvinyl chloride is polymerized from the monomer vinyl chloride (VCM). There are two main industrial processes for the production of VCM, the calcium carbide ace...

Claims

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Application Information

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IPC IPC(8): B01J27/24C07C17/08C07C21/06
CPCB01J27/24C07C17/08C07C21/06
Inventor 朱明远卢雨生张海洋代斌
Owner SHIHEZI UNIVERSITY
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