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Olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same

An olefin deoxidizer, olefin technology, applied in the direction of chemical change purification/separation, organic chemistry, etc., can solve the problems of low deoxygenation capacity and short service life, and achieve the effect of high deoxygenation capacity, efficient deoxygenation, and emission reduction

Active Publication Date: 2013-01-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a new olefin deoxidizer, its preparation method and application, and an olefin deoxygenation method in order to overcome the defects of low deoxidation capacity and short service life of the existing olefin deoxidizer at room temperature (25° C.)

Method used

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Examples

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preparation example Construction

[0023] In one aspect, the present invention provides a method for preparing an olefin deoxidizer, the method comprising the following steps:

[0024] (1) Combining manganese source and nanometer TiO 2 Mix evenly to obtain the mixture, respectively with Mn 3 O 4 And nano TiO 2 Based on 100 parts by weight of manganese source, nanometer TiO 2 The dosage is 58-100 parts by weight, and the manganese source is Mn 3 O 4 And / or Mn can be obtained after calcination 3 O 4 Of manganese compounds;

[0025] (2) Immerse the mixture obtained in step (1) with the aqueous solution of silver compound in equal volume, then knead and shape, and use Mn 3 O 4 And Ag 2 In terms of O, based on 100 parts by weight of the manganese source, the aqueous solution of the silver compound is 8-35 parts by weight, and the silver compound can be decomposed to obtain Ag after firing. 2 O water-soluble silver compounds;

[0026] (3) subjecting the product formed in step (2) to aging treatment, and then drying the aging...

Embodiment 1

[0055] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0056] MnCO 3 And the average particle size is 9.8nm, the specific surface area is 160m 2 / g of anatase TiO 2 well mixed. MnCO 3 And TiO 2 The amount of Mn 3 O 4 And TiO 2 Based on 1000g of MnCO 3 , TiO 2 650g, AgNO is added to the blend after mixing uniformly 3 The solution is immersed in equal volume, AgNO 3 The concentration and dosage of the solution are such that Mn 3 O 4 And Ag 2 O based on 1000g MnCO 3 , AgNO 3 The solution is 300g, fully kneaded, and prepared into strips with a diameter of Φ3mm and a length of 5mm with an extruder, and then placed in a closed place for 48h, then dried at 120℃ for 8h, and then calcined at 480℃ for 5h to prepare an olefin deoxidizer. The measured deoxidation capacity and deoxidation depth of the prepared olefin deoxidizer are shown in Table 1.

Embodiment 2

[0058] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0059] MnCO 3 And average particle size is 5nm, specific surface area is 200m 2 / g of anatase TiO 2 well mixed. MnCO 3 And TiO 2 The amount of Mn 3 O 4 And TiO 2 Based on 1000g of MnCO 3 , TiO 2 Is 580g, add the evenly mixed blend into the sugar coating machine and spray AgNO 3 The solution is immersed in equal volume, AgNO 3 The concentration and dosage of the solution are such that Mn 3 O 4 And Ag 2 O based on 1000g MnCO 3 , AgNO 3 The solution is 350g, rolled into a Φ3mm spherical shape, and then placed in a closed place for 60h, then dried at 140°C for 5h, and then calcined at 500°C for 2h to prepare an olefin deoxidizer. The measured deoxidation capacity and deoxidation depth of the prepared olefin deoxidizer are shown in Table 1.

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Abstract

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100 and titania nanoparticle 58-100 to obtain a mixture; (2) kneading the mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (3) aging and drying; and (4) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 25.5 mL / g, deoxygenation depth smaller than 0.01 ppm, low reduction temperature, and wide applicability in industrial production. The agent realizes high-efficiency deoxygenation at room temperature.

Description

Technical field [0001] The invention relates to a preparation method of an olefin deoxidizer, an olefin deoxidizer prepared by the preparation method, an application of the olefin deoxidizer, and an olefin deoxidation method. Background technique [0002] Olefins are important basic organic chemical raw materials. Among them, ethylene and propylene are the main raw materials for the production of polymer materials. With the rapid development of polyethylene and polypropylene technology, a variety of new high-efficiency polyethylene, polypropylene catalysts and metallocene catalysts have been used in industrial production. In order to avoid poisoning and deactivation of such high-efficiency polyolefin catalysts and improve product quality, the impurity content of the ethylene and propylene raw materials used for polymerization is strictly limited. According to the national standards for ethylene and propylene raw materials, the oxygen content of qualified polymer-grade ethylene ...

Claims

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Application Information

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IPC IPC(8): C07C7/148C07C11/04C07C11/06
Inventor 吕顺丰李彤秦燕璜刘博王世亮黄凤兴吴秀香
Owner CHINA PETROLEUM & CHEM CORP
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