Preparation method and application of activated carbon fiber-based adsorbent for removing hydrogen sulfide, hydrogen phosphide, arsenic hydride and ammonia gas
A technology of activated carbon fiber and hydrogen sulfide, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as difficult recycling, complicated operation, and inconvenient maintenance
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[0037] The invention provides a method for preparing an activated carbon fiber-based adsorbent for removing hydrogen sulfide, phosphine, arsine and ammonia, comprising the following steps:
[0038] (1) Carry out remote argon plasma treatment to activated carbon fibers to obtain pretreated activated carbon fibers;
[0039] (2) Ultrasonic impregnation of the pretreated activated carbon fibers in a hydrogen peroxide solution, followed by washing to neutrality to obtain modified activated carbon fibers;
[0040] (3) The modified activated carbon fiber is mixed with the copper nitrate solution, and rotated to obtain the activated carbon fiber loaded with copper salt;
[0041] (4) The activated carbon fiber loaded with copper salt is sequentially subjected to microwave muffle furnace roasting and remote oxygen plasma treatment to obtain an activated carbon fiber-based adsorbent for removing hydrogen sulfide, phosphine, arsine, and ammonia .
[0042] The invention performs remote a...
Embodiment 1
[0065] (1) Using remote argon plasma with a radio frequency power of 20W and a gas flow rate of 10cm 3 min -1 , under the condition that the distance from the discharge center is 20cm, the activated carbon fiber raw material is pretreated for 30s, and then the activated carbon fiber treated by remote argon plasma is ground and sieved to obtain 40-60 mesh pretreated activated carbon fiber;
[0066] (2) Mix the pretreated activated carbon fibers with a hydrogen peroxide solution with a concentration of 1.5 mol / L, impregnate them ultrasonically for 2 hours, where the ultrasonic frequency is 30KHz, and then dry them at 90°C for 15 hours;
[0067] (3) The impregnated activated carbon fiber is cleaned to neutrality with ultrapure water, dried at 90°C for 15h, then immersed in a copper nitrate solution in which the quality of copper is 5% of the activated carbon fiber quality, and vacuumed using a rotary evaporator Dry for 2 hours to obtain activated carbon fibers loaded with copper...
Embodiment 2
[0072] (1) Using remote argon plasma at a radio frequency power of 30W and a gas flow rate of 20cm 3 min -1 , under the condition that the distance from the discharge center is 10cm, the activated carbon fiber raw material is pretreated for 40s, and then the activated carbon fiber treated by remote argon plasma is ground and sieved to obtain 40-60 mesh pretreated activated carbon fiber;
[0073] (2) Mix the pretreated activated carbon fibers with a hydrogen peroxide solution with a concentration of 2mol / L, impregnate them ultrasonically for 2.5 hours, where the ultrasonic frequency is 25KHz, and then dry them at 100°C for 15 hours;
[0074] (3) The impregnated activated carbon fiber is cleaned to neutrality with ultrapure water, dried at 100°C for 15h, then impregnated into a copper nitrate solution in which the quality of copper is 10% of the activated carbon fiber quality, and vacuumed using a rotary evaporator Dry for 2.5h to obtain activated carbon fibers loaded with copp...
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Abstract
Description
Claims
Application Information
- IPC
- B01J20/20; B01J20/30; B01D53/02
- CPC
- B01J20/205; B01D53/02; B01D2257/304; B01D2257/55; B01D2257/60; B01D2257/406
- Inventors
- 宁平; 杨薪玉