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 short service life and low deoxidation capacity, and achieve the effect of efficient deoxidation, energy saving and emission reduction
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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) 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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