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A kind of ruthenium complex catalyst for acetylene hydrochlorination and its preparation method and application

A technology of acetylene hydrochlorination and ruthenium complexes, applied in the directions of organic compound/hydride/coordination complex catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem of unfavorable acetylene hydrochlorination activity, catalyst Problems such as poor activity and poor dispersibility, to achieve the effect of improving catalytic activity and stability, high activity and stability, and good dispersibility

Active Publication Date: 2020-06-12
浙江天麟环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the study of its catalytic reaction mechanism, it is believed that oxidized ruthenium is the active center of catalysis, but, i) poorly dispersed Ru is not conducive to the improvement of acetylene hydrochlorination activity; ii) the lower the content of active components, the lower the The worse the activity

Method used

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  • A kind of ruthenium complex catalyst for acetylene hydrochlorination and its preparation method and application
  • A kind of ruthenium complex catalyst for acetylene hydrochlorination and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Preparation of a highly efficient ruthenium complex catalyst for acetylene hydrochlorination:

[0022] Step 1, preparation of modified activated carbon: take 3g activated carbon (AC), join in the concentrated hydrochloric acid of 12mol / L of 100ml, after stirring at room temperature for 24h, suction filter and wash pH to 5 with deionized water, then process The good activated carbon was dried at 100°C for 24 hours to obtain a modified activated carbon carrier.

[0023] Step 2, preparation of high-efficiency Ru complex catalyst: place the modified activated carbon obtained in step 1 in a sealed suction filter bottle and vacuumize it for 1h, then weigh 0.4651g of RuCl 3 and 1.0641g of organic ligand pyridine (the molar ratio of pyridine to Ru is 6:1), completely dissolve it with 100ml of water, add it to the vacuum-treated activated carbon, stop vacuuming, stir at room temperature for 4h to obtain solid-liquid The mixture is dried at 100° C. for 24 hours to obtain a highl...

Embodiment 2

[0026] Preparation of a highly efficient ruthenium complex catalyst for acetylene hydrochlorination:

[0027] Step 1. Preparation of modified activated carbon: Weigh 3g of activated carbon (AC), add it to 100ml of 5mol / L nitric acid, stir at 80°C for 4h, filter it with suction and wash the pH to 7 with deionized water, then process The good activated carbon was dried at 160°C for 4 hours to obtain a modified activated carbon carrier.

[0028] Step 2, preparation of high-efficiency Ru complex catalyst: place the modified activated carbon obtained in step 1 in a sealed suction filter bottle and vacuumize for 4h, then weigh 0.0685g of RuCl 3 And 0.25986g of organic ligand triphenylphosphine (the molar ratio of triphenylphosphine to Ru is 3:1), it is completely dissolved with 300ml ethanol, joins in the activated carbon of vacuum treatment, and stops vacuuming, at room temperature Stirring at low temperature for 48 hours to obtain a solid-liquid mixture, and drying the obtained m...

Embodiment 3

[0031] Preparation of a highly efficient ruthenium complex catalyst for acetylene hydrochlorination:

[0032] Step 1, prepare modified activated carbon: take 3g activated carbon (AC), add respectively in the nitric acid of 5mol / L of 100ml, after stirring at room temperature for 24h, suction filter and wash pH to 7 with deionized water, then process The good activated carbon was dried at 140°C for 24 hours to obtain a modified activated carbon carrier.

[0033] Step 2, preparation of high-efficiency Ru complex catalyst: place the modified activated carbon obtained in step 1 in a sealed suction filter bottle and vacuumize it for 2 hours, then weigh 0.06604g of RuCl 3and 0.14918g of organic ligand 2,2'-bipyridine (the molar ratio of 2,2'-bipyridine to Ru is 3:1), dissolve it completely with 300ml of n-propanol, and add it to the vacuum-treated activated carbon , and stop vacuuming, stirred at room temperature for 12 hours to obtain a solid-liquid mixture, and dried the obtained ...

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Abstract

The invention discloses a ruthenium complex catalyzer for acetylene hydrochlorinate and a preparation method and application thereof. The catalyzer is characterized in that active carbon serves as catalyst support, and is loaded with ruthenium chloride and an organic ligand; the molar ratio of the ruthenium chloride and organic ligand is 1:1-6, and ruthenium accounts for 0.1-5.0% of the total weight of the catalyzer; the organic ligand is one or more of triphenylphosphine, pyridine, 2,2'-dipyridyl, acetylacetone, chlorodiphenylphosphine, chlorobenzene, cyclopentadiene, 4-methyl isopropyl benzene and 1,5-cyclooctadiene. The ruthenium complex catalyzer for the acetylene hydrochlorinate and the preparation method and application thereof have the advantages that the preparation process is simple, the catalytic activity and stability of the catalyzer are greatly improved, the catalyzer is more environmentally friendly, and the economy is high.

Description

technical field [0001] The invention relates to the field of ruthenium catalysts, in particular to a ruthenium complex catalyst for acetylene hydrochlorination, a preparation method and application thereof. Background technique [0002] With the development of the world economy and the enhancement of environmental protection awareness, the demand for polyvinyl chloride (PVC) as an excellent plastic is increasing. The methods for producing vinyl chloride (VCM) in the world can be roughly divided into the following three types according to different raw materials: acetylene method, ethylene method and ethane method. In countries with relatively rich oil resources, the acetylene method has basically been replaced by the ethylene method. However, due to my country's energy structure characteristics of "rich coal, poor oil, and little gas", the acetylene method with coal as raw material still dominates the production of VCM. status. Now in the calcium carbide acetylene method, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J31/22B01J31/24B01J37/02C07C17/08C07C21/06
CPCB01J31/1815B01J31/2234B01J31/2295B01J31/2404B01J37/0207B01J2231/32B01J2531/821C07C17/08C07C21/06
Inventor 张海洋张金利李星满宝昌张传明代斌
Owner 浙江天麟环境工程有限公司
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