Preparation technology of carbon dioxide adsorbent
A preparation process, carbon dioxide technology, applied in other chemical processes, chemical instruments and methods, gas treatment and other directions, can solve the problems of cumbersome preparation process, poor adsorption effect, high cost, and achieve good adsorption effect, low cost and easy preservation. Effect
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Embodiment 1
[0018] A preparation process for a carbon dioxide adsorbent, comprising the steps of:
[0019] Step 1) prepare material A, step 2) prepare material B, step 3) prepare material C, step 4) prepare adsorbent.
[0020] Specifically, include the following steps:
[0021] Step 1) Preparation of material A: put corn stalks into a pulverizer to pulverize to obtain straw powder, then mix the straw powder and wheat bran evenly at a mass ratio of 3:1, and add them to 1M sodium hydroxide aqueous solution, Soak for 10 hours, air-dry after filtering, and grind into a powder with a particle size of 10 meshes, which is material A; the quality of the aqueous sodium hydroxide solution is 5 times that of wheat bran;
[0022] Step 2) Preparation of material B: Add nano-alumina and glass fiber to the reaction vessel in turn, stir evenly, then add titanate coupling agent and acrylic acid, stir at 200 rpm for 10 minutes, and then stand still for 30 minutes to obtain the material B; Wherein, the ma...
Embodiment 2
[0026] A preparation process for a carbon dioxide adsorbent, comprising the steps of:
[0027] Step 1) prepare material A, step 2) prepare material B, step 3) prepare material C, step 4) prepare adsorbent.
[0028] Specifically, include the following steps:
[0029] Step 1) Preparation of material A: put corn stalks into a pulverizer to pulverize to obtain straw powder, then mix the straw powder and wheat bran evenly at a mass ratio of 3:1, and add them to 1M sodium hydroxide aqueous solution, Soak for 10 hours, air-dry after filtering, and grind into a powder with a particle size of 20 meshes, which is material A; the quality of the aqueous sodium hydroxide solution is 5 times that of wheat bran;
[0030] Step 2) Preparation of material B: Add nano-alumina and glass fiber to the reaction vessel in sequence, stir evenly, then add isopropyl tris(dioctyl pyrophosphate acyloxy) titanate coupling agent and acrylic acid, 200 Turn / min and stir for 10 minutes, then stand still for ...
Embodiment 3
[0034] The performance test of the adsorbent prepared by the embodiment of the present invention 1-2 process:
[0035] Get the adsorbent 20g that embodiment 1 or 2 prepares respectively, place in the U-shaped tube of AutoChem II 2920; Pass into 10% CO then 2 -He gas, the gas pressure is 0.3MPa, the gas flow rate is 10ml.min -1 , keep 10min, CO 2 -CO in He gas 2 The volume percentage is 5%, and the He volume percentage is 95%; The adsorption of the adsorbent of the present invention can reach saturation within 10min, and the adsorption capacity of the adsorbent of Example 1 can reach 7.02mmol / g, and the adsorbent of Embodiment 2 can reach 7.18mmol / g The adsorption capacity of g is significantly better than that of commonly used activated carbon or calcium-based adsorbents.
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