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 deoxidation capacity and short service life, achieve high deoxidation capacity, efficient deoxidation, and avoid Ag sintering effect.

Active Publication Date: 2014-08-27
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

[0024] On the one hand, the invention provides a kind of preparation method of olefin deoxidizer, described method comprises the following steps:

[0025] (1) Nanoscale TiO modified by manganese source and alkali metal oxide and / or alkali metal hydroxide 2 Mixed evenly to obtain a mixture, respectively with Mn 3 o 4 and modified nanoscale TiO 2 Based on 100 parts by weight of the manganese source, the modified nano-sized TiO 2 The consumption is 58-100 parts by weight, and the manganese source is Mn 3 o 4 And / or can get Mn after roasting 3 o 4 manganese compounds;

[0026] (2) the mixture obtained in step (1) is first roasted;

[0027] (3) The product after step (2) roasting is impregnated with the aqueous solution of the compound of silver equal volume, then kneading, molding, respectively with 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 compound of silver is 8-35 parts by weight, and the compou...

Embodiment 1

[0059] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0060] At 650g, the average particle size is 9.8nm and the specific surface area is 160m 2 / g anatase TiO 2 Add sodium hydroxide aqueous solution to carry out equal volume impregnation, with Na 2 In terms of O, the sodium hydroxide aqueous solution was 13 g, and then dried at 100 °C for 10 h to obtain the sodium hydroxide modified TiO 2 , NaOH-modified TiO 2 with MnCO 3 Mix well, MnCO 3 and NaOH-modified TiO 2 The dosage makes the Mn 3 o 4 and NaOH-modified TiO 2 Gauge, based on 1000g of MnCO 3 , NaOH-modified TiO 2 is 650g, and then the mixture obtained by mixing uniformly is subjected to the first calcination at 430°C for 8h, and the modified nano-sized TiO after calcination 2 In, Na 2 The mass percent content of O is 2%.

[0061] Adding AgNO to the product after the first roasting 3 solution for equal volume impregnation, AgNO 3 The c...

Embodiment 2

[0063] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0064] In 580g, the average particle size is 5nm and the specific surface area is 200m 2 / g anatase TiO 2 Add sodium hydroxide aqueous solution to carry out equal volume impregnation, with Na 2 In terms of O, the sodium hydroxide aqueous solution was 18 g, and then dried at 120 °C for 8 h to obtain the sodium hydroxide modified TiO 2 , NaOH-modified TiO 2 with MnCO 3 Mix well, MnCO 3 and NaOH-modified TiO 2 The dosage makes the Mn 3 o 4 and NaOH-modified TiO 2 Gauge, based on 1000g of MnCO 3 , NaOH-modified TiO 2 is 580g, and then the mixture obtained by mixing uniformly is subjected to the first calcination at 450°C for 2h, and the modified nano-sized TiO after calcination 2 In, Na 2 The mass percent content of O is 3%.

[0065] Add the product after the first roasting to the sugar coating machine and spray AgNO 3 solution for equal volu...

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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 modified titania nanoparticle 58-100 to obtain a mixture; (2) calcining; (3) kneading the calcined mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (4) aging and drying; and (5) calcining. The second calcining temperature is lower than the first calcining temperature. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 31 mL / g, deoxygenation depth lower than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

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 deoxygenation 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, various new high-efficiency polyethylene, polypropylene catalysts and metallocene catalysts have been applied to industrial production. In order to avoid poisoning and deactivation of such high-efficiency polyolefin catalysts and improve product quality, there are strict restrictions on the impurity content of ethylene and propylene raw materials used for polymerization. According to the national standard for ethylene and propylene raw materials, the oxygen content in qualified polymer gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/148C07C11/04C07C11/06
Inventor 吕顺丰秦燕璜王世亮黄凤兴李彤刘博
Owner CHINA PETROLEUM & CHEM CORP
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