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, achieve high deoxidation capacity, avoid Ag sintering, and reduce the effect of low temperature
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[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 Mix with the binder to obtain a mixture, respectively, Mn 3 o 4 , Modified nano TiO 2 and binder, based on 100 parts by weight of the manganese source, the modified nano-TiO 2 The dosage is 58-100 parts by weight, the binder is 1.5-25 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...
Embodiment 1
[0063] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.
[0064] 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 and MnCO with an average particle size of 35 μm 3 , and the cement with an average particle size of 35 μm is mixed evenly, MnCO 3 , Sodium hydroxide modified TiO 2 and the amount of cement so that the Mn 3 o 4 , Sodium hydroxide modified TiO 2 and cement meter, based on 1000g of MnCO 3 , NaOH-modified TiO 2 650g of cement, 200g of cement, and then carry out the first calcination of the mixture obtained by mixing uniformly at 430°C for 8h, and the modified nano-sized TiO after calcination ...
Embodiment 2
[0067] This example is used to illustrate the preparation method of the olefin deoxidizer provided by the present invention.
[0068] 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 MnCO with an average particle size of 20 μm 3 , and the cement with an average particle size of 20 μm is mixed evenly, MnCO 3 , Sodium hydroxide modified TiO 2 and the amount of cement so that the Mn 3 o 4 , Sodium hydroxide modified TiO 2 and cement meter, based on 1000g of MnCO 3 , NaOH-modified TiO 2 is 580g, cement is 150g, and then the mixture obtained by mixing uniformly is subjected to the first roasting at 450°C for 2h, and the modified nano-sized TiO after roasting 2 In, Na 2 The ...
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