A supported sulfide ionic liquid-promoted ruthenium catalyst and its application in the hydrohalogenation of unsaturated hydrocarbons

An ionic liquid, ruthenium catalyst technology, applied in physical/chemical process catalysts, catalytic reactions, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as sublimation loss, improve reaction activity, and enhance stability. , the effect of enhancing activity

Active Publication Date: 2019-12-24
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to fundamentally solve the difficult problem of ruthenium-based catalyst sublimation and loss in the reaction of acetylene hydrochlorination to vinyl chloride, and to provide a ruthenium-based catalyst for acetylene hydrochlorination with good stability and high reactivity

Method used

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  • A supported sulfide ionic liquid-promoted ruthenium catalyst and its application in the hydrohalogenation of unsaturated hydrocarbons
  • A supported sulfide ionic liquid-promoted ruthenium catalyst and its application in the hydrohalogenation of unsaturated hydrocarbons
  • A supported sulfide ionic liquid-promoted ruthenium catalyst and its application in the hydrohalogenation of unsaturated hydrocarbons

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Synthesis of sulfide ionic liquid A:

[0060] Mix ionic liquid mono-butyl-tri-methylimidazolium chloride and sulfur powder according to the mass ratio of 1:0.5, stir in a water bath at 40°C for 10 minutes, then add acetonitrile solution, dissolve, and stir at 40°C for 12 hours, Stir the above mixture evenly, then filter to remove unreacted sulfur powder, dry the obtained filtrate at 110°C, then dissolve the sample obtained after drying in dichloromethane, add an appropriate amount of Ionized water and sodium bicarbonate solution were used to further remove impurities in the solution. Finally, the above mixed solution was dried at 110° C. for 16 hours, and then recrystallized at room temperature to obtain the desired sulfide ionic liquid A.

[0061] Select columnar activated carbon as the carrier, its particle size is 40 mesh, the ash content is 3.0wt%, and the specific surface area is 950m 2 / g, pore volume 0.6ml / g. 50ml of RuCl 3 After mixing the solution (in which ...

Embodiment 2

[0064] Synthesis of sulfide ionic liquid A:

[0065] Mix ionic liquid mono-butyl-tri-methylimidazolium chloride and sulfur powder according to the mass ratio of 1:0.5, stir in a water bath at 40°C for 10 minutes, then add acetonitrile solution, dissolve, and stir at 40°C for 12 hours, Stir the above mixture evenly, then filter to remove unreacted sulfur powder, dry the obtained filtrate at 110°C, then dissolve the sample obtained after drying in dichloromethane, add an appropriate amount of Ionized water and sodium bicarbonate solution were used to further remove impurities in the solution. Finally, the above mixed solution was dried at 110° C. for 16 hours, and then recrystallized at room temperature to obtain the desired sulfide ionic liquid A.

[0066] Select columnar activated carbon as the carrier, its particle size is 40 mesh, the ash content is 3.0wt%, and the specific surface area is 950m 2 / g, pore volume 0.6ml / g. 10ml of RuCl 3 After the solution (the Ru content i...

Embodiment 3

[0069] Synthesis of sulfide ionic liquid A:

[0070] Mix ionic liquid mono-butyl-tri-methylimidazolium chloride and sulfur powder according to the mass ratio of 1:0.5, stir in a water bath at 40°C for 10 minutes, then add acetonitrile solution, dissolve, and stir at 40°C for 12 hours, Stir the above mixture evenly, then filter to remove unreacted sulfur powder, dry the obtained filtrate at 110°C, then dissolve the sample obtained after drying in dichloromethane, add an appropriate amount of Ionized water and sodium bicarbonate solution were used to further remove impurities in the solution. Finally, the above mixed solution was dried at 110° C. for 16 hours, and then recrystallized at room temperature to obtain the desired sulfide ionic liquid A.

[0071] Select columnar activated carbon as the carrier, its particle size is 40 mesh, the ash content is 3.0wt%, and the specific surface area is 950m 2 / g, pore volume 0.6ml / g. 5ml of RuCl 3 After the solution (the Ru content is...

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Abstract

The invention discloses a supported-type sulfuretted-ionic-liquid-promoted ruthenium catalyst. The supported-type sulfuretted-ionic-liquid-promoted ruthenium catalyst is composed of a porous solid carrier and a Ru-S-IL compound loaded on the porous solid carrier. According to a preparation method, ionic liquid is subjected to sulfuration modification so as to realize introduction of sulfur containing groups, the Ru precursor is loaded with the ionic liquid so as to form the Ru-S-IL system with a special structure, increase the activity and stability of ruthenium based catalysts, and achieve high reaction activity and stability. In applications, the supported-type sulfuretted-ionic-liquid-promoted ruthenium catalyst possesses advantages such as low load capacity, high activity and stability, and excellent economic and industrial application value.

Description

Background technique [0001] Polyvinyl chloride (PVC) is the third most commonly used plastic, which is obtained by polymerization of vinyl chloride. Due to the energy occurrence characteristics of rich coal, poor oil and little gas in my country, the preparation of vinyl chloride by coal-based calcium carbide acetylene method is the mainstream process of polyvinyl chloride production in my country. Mercury chloride is currently used as a catalyst for the synthesis of vinyl chloride in the industry. Because it causes serious pollution to the environment, and the synthesized polyvinyl chloride contains a small amount of mercury, the application of polyvinyl chloride is limited. Therefore, mercuric chloride catalysts will be gradually eliminated, and the synthesis of vinyl chloride under non-mercury catalyst conditions will become the main direction for the sustainable development of calcium carbide PVC in the future. Mercury-free catalysts mainly use metal chlorides as active c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C17/08B01J31/02B01J31/26C07C21/06
CPCB01J31/0292B01J31/1691B01J31/226B01J31/26B01J2231/32B01J2531/821C07C17/08C07C21/06
Inventor 李小年赵佳张群峰丰枫岳玉学许孝良卢春山吕井辉马磊
Owner ZHEJIANG UNIV OF TECH
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