Preparation method of iron-cerium-based porous catalyst used for removing organic sulfur
An organosulfur and catalyst technology, which is used in the preparation of cerium porous materials, iron-cerium-based porous catalysts, and iron-containing fields, can solve problems such as unreported process methods, and achieve short preparation time, strong adsorption capacity, and high specificity. The effect of surface area
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Embodiment 1
[0027] Mix ferric nitrate and cerium nitrate in a mass ratio of 1:10 to obtain mixed nitrate; mix MIL-100 (Fe) and mixed nitrate in a mass ratio of 1:3, add deionized water and stir for 3 Hour, get the mixed solution; put the above-mentioned mixed solution in a blast drying box, dried at 130 ℃ for 8 hours; put the dried mixture in a quartz boat and placed in a tube furnace, in an oxygen-enriched atmosphere and 700 It is calcined at ℃ for 2 hours to obtain iron-cerium-based porous catalyst.
[0028] The catalyst activity test was carried out in a fixed-bed quartz reactor, and the reaction conditions were: COS concentration 500ppm, CS 2 Concentration 50ppm, space velocity 50000h -1 、Reaction temperature 60℃, oxygen content 5%, COS and CS 2 See the catalytic conversion results figure 1 , It can be concluded from the figure that 100% COS conversion rate can be maintained for 420min, 100% CS 2 The conversion rate can be maintained for 630 minutes, which indicates that the iron-cerium-b...
Embodiment 2
[0030] Mix ferric nitrate and cerium nitrate in a mass ratio of 1:5 to obtain mixed nitrate; mix Fe-MOF-5 and mixed nitrate in a mass ratio of 1:0.5, add deionized water and stir for 4 hours , Get the mixed solution; place the above mixed solution in a blast drying box and dry at 150°C for 9 hours; put the dried mixture in a quartz boat and place it in a tube furnace, in an oxygen-rich atmosphere and 500°C After calcination for 4 hours, an iron-cerium-based porous catalyst is obtained.
[0031] The catalyst activity test was carried out in a fixed-bed quartz reactor, and the reaction conditions were: COS concentration 500ppm, CS 2 Concentration 50ppm, space velocity 50000h -1 、Reaction temperature 60℃, oxygen content 5%, COS and CS 2 See the catalytic conversion results figure 2 From the figure, it can be concluded that 100% COS conversion rate can be maintained for 390min, 100% CS 2 The conversion rate can be maintained for 720min, which indicates that the iron-cerium-based poro...
Embodiment 3
[0033] Mix ferric nitrate and cerium nitrate in a mass ratio of 1:20 to obtain mixed nitrate; mix Fe-MOF-74 and mixed nitrate in a mass ratio of 1:1.5, add deionized water and stir for 5 hours , The mixed solution is obtained; the above-mentioned mixed solution is placed in a blast drying box and dried at 100°C for 7 hours; the dried mixture is placed in a quartz boat and placed in a tube furnace, in an oxygen-rich atmosphere and 400°C After calcination for 5 hours, the iron-cerium-based porous catalyst is obtained.
[0034] The catalyst activity test was carried out in a fixed-bed quartz reactor, and the reaction conditions were: COS concentration 500ppm, CS 2 Concentration 50ppm, space velocity 50000h -1 、Reaction temperature 60℃, oxygen content 5%, COS and CS 2 See the catalytic conversion results image 3 From the figure, it can be concluded that 100% COS conversion rate can maintain 450min, 100% CS 2 The conversion rate can be maintained for 690 min, which indicates that the...
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