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 high deoxygenation capacity, efficient deoxidation, and reduced emissions.
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[0023] On the one hand, the invention provides a kind of preparation method of olefin deoxidizer, described method comprises the following steps:
[0024] (1) Manganese source and nano TiO 2 Mixed evenly to obtain a mixture, respectively with Mn 3 o 4 and nanoscale TiO 2 Calculated, based on 100 parts by weight of manganese source, nanoscale 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) aging the product formed in step (2), and then drying ...
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 anatase TiO 2 well mixed. MnCO 3 and TiO 2 The dosage makes the Mn 3 o 4 and TiO 2 Gauge, based on 1000g of MnCO 3 ,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 kneaded, and prepared into strips with a diameter of Φ3mm and a length of 5mm by an extruder, and then placed in an airtight place for 48h, then dried at 120°C for 8h, and then roasted at 480°C for 5h to prepare an olefin deoxidizer. The deoxygenation capacity and deoxygenation 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 the average particle size is 5nm, the specific surface area is 200m 2 / g anatase TiO 2 well mixed. MnCO 3 and TiO 2 The dosage makes the Mn 3 o 4 and TiO 2 Gauge, based on 1000g of MnCO3 ,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 and Ag 2 O meter, based on 1000g of MnCO 3 , AgNO 3 The solution is 350g, rolled into a spherical shape of Φ3mm, and then placed in an airtight place for 60h, then dried at 140°C for 5h, and then calcined at 500°C for 2h to prepare an olefin deoxidizer. The deoxygenation capacity and deoxygenation depth of the prepared olefin deoxidizer are shown in Table 1.
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Abstract
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