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

An olefin deoxidizer and 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, and achieve the effects of efficient deoxidation, reduced emissions, and energy saving

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

[0024] (1) Nanoscale TiO modified with manganese source and alkali metal oxide 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;

[0025] (2) The mixture obtained in step (1) is impregnated with an equal volume of aqueous solution of a silver compound, then kneaded and molded, and 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 compound of silver can be decomposed to obtain Ag after roasting. 2 O water-soluble silver compounds;

[0026] (3) a...

Embodiment 1

[0057] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0058] 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 is 13g, then dried at 100°C for 10h, and then calcined at 350°C for 6h to obtain modified nano-sized TiO 2 , where Na 2 The mass percent content of O is 2%.

[0059] MnCO 3 and the prepared modified nanoscale TiO 2 well mixed. MnCO 3 and modified nanoscale TiO 2 The dosage makes the Mn 3 o 4 and modified nanoscale TiO 2 Gauge, based on 1000g of MnCO 3 , modified nanoscale TiO 2 is 650g, add AgNO 3 solution for equal volume impregnation, AgNO 3 The concentration and amount of the solution make the Mn 3 o 4 and Ag 2 O meter, based on 1000g of MnCO 3 , AgNO 3 The solution is 300g, fully knea...

Embodiment 2

[0061] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.

[0062] 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 is 18g, then dried at 120°C for 8h, and then calcined at 450°C for 2h to obtain modified nano-sized TiO 2 , where Na 2 The mass percent content of O is 3%.

[0063] MnCO 3 and the prepared modified nanoscale TiO 2 well mixed. MnCO 3 and modified nanoscale TiO 2 The dosage makes the Mn 3 o 4 and modified nanoscale TiO 2 Gauge, based on 1000g of MnCO 3 , modified nanoscale TiO 2 It is 580g, and the blended material after mixing is added in the sugar coating machine, sprayed into AgNO 3 solution for equal volume impregnation, AgNO 3 The concentration and amount of the solution make the Mn 3 o 4 a...

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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 (modified by alkali metal oxide) 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 29.3 mL / g, deoxygenation depth smaller 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 Applications(China)
IPC IPC(8): C07C7/148C07C11/04C07C11/06
Inventor 吕顺丰刘博秦燕璜李彤王世亮吴秀香黄凤兴
Owner CHINA PETROLEUM & CHEM CORP
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