Transition metal doped carbon microsphere as well as preparation method and application thereof
A transition metal, transition metal salt technology, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve problems such as cumbersome methods, achieve uniform distribution, increased pore structure, good The effect of adsorption performance
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Embodiment 1
[0043] This example relates to the preparation of Mn-doped carbon spheres (Mn-CS) and the control sample Mn-doped carbon material (Mn-C), and the non-destructive activation of Mn-CS by potassium oxalate to prepare Mn-ACS.
[0044] 4 parts by mass of sucrose, 1 part by mass of KMnO 4 , 3 parts by mass of APS (ammonium persulfate) were dissolved in 40 parts by volume of water, and then the mixed solution was transferred to a stainless steel hydrothermal kettle lined with polytetrafluoroethylene, placed in a hot air oven and heated to 180 ° C and then kept warm React for 4 hours; filter the reaction solution, wash the filter cake three times with water and ethanol, and dry it in a hot air oven at 80°C for 8 hours, and name it as Mn-CS. The Mn content therein is 0.89wt%.
[0045] A control sample Mn-C was prepared in the same manner as above without adding APS. Follow the same method as above without adding KMnO 4 A control sample CS was prepared with APS.
[0046] The SEM com...
Embodiment 2
[0050] This example relates to the preparation of Mn-doped carbon spheres (Mn-CS), and the nondestructive activation of Mn-CS by potassium oxalate to prepare Mn-ACS.
[0051] 4 mass parts of sucrose, 4 mass parts of KMnO 4 1. Dissolve 5 parts by mass of APS in 40 parts by volume of water, then transfer the mixed solution into a stainless steel hydrothermal kettle lined with polytetrafluoroethylene, place it in a hot air oven and heat it up to 180°C, then keep it warm for 4 hours; filter the reaction solution , the filter cake was washed three times with water and ethanol, and then dried in a hot air oven at 80 °C for 8 h, named Mn-CS. The Mn content therein is 2.31 wt%.
[0052] Take 1 mass part of the Mn-CS sample, mix it with 3 mass parts of potassium oxalate, transfer it into a ceramic boat, and place it in a tube furnace, pass in nitrogen to replace the air in the furnace, and then adjust the nitrogen flow rate to 30mL / min. Raise to 800°C at a heating rate of 3°C / min, ba...
Embodiment 3
[0056] This example relates to the preparation of V-doped carbon spheres (V-CS) and the control sample V-doped carbon material (V-C), and the non-destructive activation of V-CS by potassium oxalate to prepare V-ACS.
[0057] 4 parts by mass of sucrose, 1 part by mass of Na 3 VO 4 1. Dissolve 3 parts by mass of APS in 40 parts by volume of water, then transfer the mixed solution into a stainless steel hydrothermal kettle lined with polytetrafluoroethylene, place it in a hot air oven, heat it up to 180°C, and keep it warm for 4 hours; After filtration, the filter cake was washed three times with water and ethanol respectively, and then the filter cake was dried in a hot air oven at 80°C for 8 hours, and named as V-CS. The V content therein is 2.59wt%.
[0058] Without adding APS, control samples V-C were prepared according to the same method. The SEM comparison photos of V-CS and V-C are as follows Figure 5 As shown, V-CS is smooth spherical, and V-C is fused irregular bloc...
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