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A low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination

A ruthenium-based catalyst, acetylene hydrochlorination technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, catalytic reactions, etc., can solve problems that restrict the industrial application of Ru-based catalysts

Active Publication Date: 2021-09-10
内蒙古自治区石油化工监督检验研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the ruthenium-based catalysts used in the acetylene hydrochlorination reaction are catalysts with a ruthenium content of 1 wt%. However, the cost of 1 wt% Ru severely restricts the industrial application of Ru-based catalysts.

Method used

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  • A low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination
  • A low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination
  • A low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Pretreatment of activated carbon: Weigh 15g of granular activated carbon and add it to 150mL hydrochloric acid solution with a concentration of 1mol / L, heat it in a water bath to 70°C, keep it for 5h, cool to room temperature, filter and wash with deionized water until the washing is neutral, then in 120 After drying at ℃ for 12 h, the obtained activated carbon was labeled as AC.

[0020] Weigh 0.0197g of RuCl 3 ·3H 2 O was dissolved in 10mL of deionized water, then 3g of pretreated AC was added, stirred at room temperature for 12h, then evaporated to dryness at 60°C, and dried at 100°C for 12h to obtain ruthenium with a weight percentage of 0.25 % of ruthenium-based catalysts, labeled 0.25% Ru / AC.

Embodiment 2

[0021] Embodiment 2: a kind of low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination reaction of the present invention is prepared as follows: take a certain amount of RuCl 3 Dissolve 3H2O in 10mL deionized water, add AC to it, then add a certain amount of oxalic acid and keep stirring at room temperature for 12h. The water was evaporated at 60° C., and then dried at 100° C. for 12 hours to obtain the desired ruthenium-based catalyst with low ruthenium content.

Embodiment 3

[0022] Embodiment 3: A low ruthenium content ruthenium-based catalyst for acetylene hydrochlorination reaction, which includes activated carbon carrier, load component and auxiliary agent, load component is ruthenium salt, in the present embodiment, ruthenium salt is RuCl 3 ·3H 2 O, the auxiliary agent is oxalic acid; in the ruthenium salt, the loading amount of ruthenium ions is 0.2wt%, and the mass ratio of oxalic acid to ruthenium ions is 15:1. It is prepared according to the method in Example 2 to obtain a ruthenium-based catalyst with a ruthenium weight percentage of 0.2%, which is marked as 0.2%Ru-15 / AC.

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Abstract

The invention discloses a ruthenium-based catalyst with low ruthenium content for acetylene hydrochlorination reaction. In the ruthenium salt, the loading amount of ruthenium ions is 0.2wt%-0.6wt%. The invention reduces the loading of precious metal Ru, and modifies the Ru-based catalyst by adding oxalic acid auxiliary agent to develop a catalyst with low ruthenium content equivalent to 1wt% of ruthenium-based catalyst, thereby achieving the purpose of reducing cost.

Description

Technical field: [0001] The invention relates to a ruthenium-based catalyst, in particular to a ruthenium-based catalyst with low ruthenium content for acetylene hydrochlorination. Background technique: [0002] my country's special energy structure of "rich in coal, less in gas, and poor in oil" determines that the main process route of my country's industrial production of PVC is acetylene hydrochlorination. For a long time, the catalyst used in industry is HgCl 2 / AC. However, mercuric chloride is easy to sublimate and lose, causing serious pollution to the environment and hindering the development of PVC industrial production. Therefore, in order to realize the sustainable development of PVC industrial production by acetylene hydrochlorination, it is an urgent problem to develop environment-friendly catalysts to replace industrial mercuric chloride catalysts. [0003] At present, the research on mercury-free catalysts is mainly carried out from three aspects: non-meta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/04C07C17/08C07C21/06
CPCB01J31/04B01J2231/32C07C17/08C07C21/06
Inventor 李强付晓娟葛金良邓轶喆李应彤刘春华
Owner 内蒙古自治区石油化工监督检验研究院