CN109759062A - A kind of preparation method of catalyst that is while removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide - Google Patents
A kind of preparation method of catalyst that is while removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide Download PDFInfo
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- CN109759062A CN109759062A CN201910021453.5A CN201910021453A CN109759062A CN 109759062 A CN109759062 A CN 109759062A CN 201910021453 A CN201910021453 A CN 201910021453A CN 109759062 A CN109759062 A CN 109759062A
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- hydrogen
- carbon nanotube
- walled carbon
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- hydrogen sulfide
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- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 title claims abstract description 65
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 37
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003054 catalyst Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000002048 multi walled nanotube Substances 0.000 claims abstract description 56
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 9
- 238000007598 dipping method Methods 0.000 claims abstract description 7
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 24
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 12
- 238000000746 purification Methods 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003915 air pollution Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 239000002041 carbon nanotube Substances 0.000 abstract 2
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000010534 mechanism of action Effects 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910000070 arsenic hydride Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a kind of preparation methods of catalyst for removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously, belong to material preparation and prevention and control of air pollution field.The method of the invention are as follows: after multi-walled carbon nanotube tabletting, screening, it is pre-processed using low temperature plasma；Ultrasonic immersing is carried out to pretreated multi-walled carbon nanotube；Carbon nanotube after dipping is dried and is activated；Catalyst needed for being finally made using the carbon nanotube after low temperature plasma modification activation.The present invention has the advantages that material is novel, cheap, preparation process is easily operated, has good removal effect to hydrogen phosphide, hydrogen sulfide and hydrogen cyanide, can be widely applied for removing while hydrogen phosphide in kinds of gas sources, hydrogen sulfide and hydrogen cyanide.
Description
Technical field
The present invention relates to a kind of preparation methods of catalyst for removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously, belong to material
Material preparation and prevention and control of air pollution field.
Background technique
H2S and PH 3It is widely present in atmospheric environment, untreated H in industry2S and PH 3It is discharged into big compression ring
Huge harm can be caused to ecological environment and human health in border, in addition H2The presence of S is easy to cause catalyst poisoning, and
There is very strong corrosiveness to industrial production facilities.HCN is extremely toxic substance, has stronger stability, toxicity is CO
35 times, be a kind of mortality gas, have great harm to human health and environmental protection.Produced by phosphorus production
Yellow phosphoric tail gas in contain the toxic gases such as a large amount of CO and a small amount of PH3, H2S, HCN, be a kind of main atmosphere pollution
It is a kind of rare secondary resource again, untreated yellow phosphoric tail gas, which is directly discharged into atmosphere, will will cause serious atmosphere
The serious waste that pollution, directly burning will cause CO again.PH can effectively be removed3、H2S, the toxic gases such as HCN are for CO's
Recycling has great importance.
Chinese patent CN108057441A disclose it is entitled " it is a kind of for hydrogen phosphide decompose ferrous metals honeycomb urge
The preparation of agent " this method preparation process is simple, to hydrogen phosphide high catalytic efficiency, but needs to be added nano metal powder, valence
Lattice are expensive, and exist and be not easy the disadvantages of being recycled.Method Chinese patent CN104888692B disclose it is entitled " a kind of simultaneously
The invention of the preparation method of removing hydrogen sulfide, hydrogen phosphide, arsenic hydride adsorbent ", the material prepared by the invention is to hydrogen phosphide
There is good clean-up effect with hydrogen sulfide, removal efficiency can reach 100% simultaneously, but exist as adsorbent and readily penetrate through
The shortcomings that, in addition in the preparation process of material cobalt metal addition have secondary pollution risk.Chinese patent
106621779A disclose it is entitled " it is a kind of for and meanwhile the manganese ore dreg slurry that removes hydrogen sulfide, hydrogen phosphide and hydrogen cyanide system
The invention of Preparation Method ", which not only realizes the resource utilization of slag, and has removal efficiency height and duration long
The advantages of, but slag composition is complicated, it is complex to the mechanism of action of hydrogen sulfide, hydrogen phosphide, arsine gas, it is difficult to carry out
Further investigation.
While hydrogen phosphide and hydrogen sulfide removing sulfuldioxide mainly include liquid phase oxidation reduction method, it is liquid phase catalytic oxidation, wet
The methods of formula catalytic oxidation, catalytic decomposition, absorption-catalytic oxidation.The purification techniques of hydrogen cyanide mainly has absorption and liquid
Phase catalytic oxidation, absorption method, combustion method, gas-solid phase catalytic oxidation method, gas and solid phase catalyzing Hydrolyze method, gas-solid phase catalytic oxidation/
The methods of catalytic hydrolysis combined removing.The correlative study for removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously is less, presently relevant to grind
Study carefully and is primarily present catalyst component complexity the mechanism of action is caused in purification process to be not easy analysis and the poor disadvantage of removal performance.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation sides of catalyst for removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously
Method, the catalytic component is simple and can effectively be removed to hydrogen phosphide, hydrogen sulfide and hydrogen cyanide for a long time, specifically include with
Lower step:
(1) tabletting is carried out to multi-walled carbon nanotube, the multi-walled carbon nanotube of 40-60 mesh is obtained after grinding, screening, in air atmosphere
Under to multi-walled carbon nanotube carry out Low Temperature Plasma Treating, obtain multi-walled carbon nanotube after purification.
(2) multi-walled carbon nanotube that step (1) obtains is impregnated into the mixed solution of copper nitrate and ferric nitrate, it is sufficiently mixed
Even, ultrasonic immersing 30-60min, wherein supersonic frequency is 25-35kHz；The copper nitrate in the mixed solution of copper nitrate and ferric nitrate
Quality be multi-walled carbon nanotube quality 2-10%, the quality of ferric sulfate is the 1-5% of multi-walled carbon nanotube quality.
(3) multi-walled carbon nanotube after dipping is dried, then roasts 3-5h under the conditions of 300-600 DEG C, will roasted
Multi-walled carbon nanotube tabletting after burning grinds, is sized to 100-200 mesh.
(4) low temperature plasma surface modification, system are carried out to the multi-walled carbon nanotube after screening under ammonia gas atmosphere
Obtain the catalyst that can remove hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously.
Preferably, in step (1) of the present invention or (4) Low Temperature Plasma Treating condition are as follows: output voltage 25-45V,
Discharge frequency is 50-90Hz, and the processing time is 5-15min.
Preferably, condition dry in step (3) of the present invention are as follows: dry 6-8h under the conditions of 90-120 DEG C.
The present invention has the advantage that compared with prior art or good effect:
(1) present invention pre-processes multi-walled carbon nanotube using low temperature plasma, which aoxidizes pre- place with strong acid
Reason technology or high-temperature oxydation preconditioning technique, which are compared, has the advantages that save electric energy and acid consumption, Yi Shixian industrial applications.
(2) multi-walled carbon nanotube price is increasingly cheap, and metal salt impregnating agent is cheap and easy to get, has a good application prospect；
Removal efficiency is high simultaneously, time of break-through is long to hydrogen phosphide, hydrogen sulfide and hydrogen cyanide for catalyst, and catalytic component is simple, just
In the analysis and further research of the mechanism of action.
Detailed description of the invention
Fig. 1 is hydrogen phosphide, hydrogen sulfide and hydrogen cyanide removal effect figure in the embodiment of the present invention 1；
Fig. 2 is hydrogen phosphide, hydrogen sulfide and hydrogen cyanide removal effect figure in the embodiment of the present invention 2；
Fig. 3 is hydrogen phosphide, hydrogen sulfide and hydrogen cyanide removal effect figure in the embodiment of the present invention 3；
Fig. 4 is hydrogen phosphide, hydrogen sulfide and hydrogen cyanide removal effect figure in the embodiment of the present invention 4.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples, but protection scope of the present invention and unlimited
In the content.
Inlet gas guarantees that phosphine concentration is 600ppm, concentration of hydrogen sulfide 300ppm, hydrogen cyanide in the embodiment of the present invention
Concentration is 100ppm, using argon gas as gas of carrier gas, in gas containing 2% oxygen；Catalyst obtained is placed in reactor,
Holding air speed is 10000h-1, reaction temperature is 200 DEG C.
Embodiment 1
(1) with air be modification gas, output voltage be 25V, discharge frequency be 50Hz under conditions of to after tabletting, screening
The multi-walled carbon nanotube of obtained 40-60 mesh carries out Low Temperature Plasma Treating 5min, obtains multi-walled carbon nanotube after purification.
(2) multi-walled carbon nanotube after purification is added to the mixed solution of copper nitrate and ferric nitrate (in mixed solution
The quality of copper nitrate is the 2% of multi-walled carbon nanotube quality, and the quality of ferric nitrate is the 1% of multi-walled carbon nanotube quality) in super
Acoustic frequency is ultrasonic immersing 30min under conditions of 25kHz.
(3) multi-walled carbon nanotube after dipping is dried to 6h under the conditions of 90 DEG C, then roasts 3h under the conditions of 300 DEG C,
Tabletting is carried out to the multi-walled carbon nanotube after roasting again, is sieved so that particle size is between 100-200 mesh.
(4) with ammonia be modification gas in output voltage for 25V, discharge frequency be 50Hz under conditions of to through tabletting, sieve
The multi-walled carbon nanotube of the 100-200 mesh obtained after point carries out low temperature plasma modification 5min, obtains while removing phosphatization
The new catalyst of hydrogen, hydrogen sulfide and hydrogen cyanide；As seen from Figure 1, which removes hydrogen phosphide, hydrogen sulfide and hydrogen cyanide
120min, 150min, 60min are respectively reached except rate maintains 100%.
Embodiment 2
(1) with air be modification gas, output voltage be 45V, discharge frequency be 90Hz under conditions of to after tabletting, screening
The multi-walled carbon nanotube of obtained 40-60 mesh carries out Low Temperature Plasma Treating 15min, obtains multi-wall carbon nano-tube after purification
Pipe.
(2) multi-walled carbon nanotube after purification is added to the mixed solution of copper nitrate and ferric nitrate (in mixed solution
The quality of copper nitrate is the 10% of multi-walled carbon nanotube quality, and the quality of ferric nitrate is the 5% of multi-walled carbon nanotube quality) in super
Acoustic frequency is ultrasonic immersing 60min under conditions of 35kHz.
(3) multi-walled carbon nanotube after dipping is dried to 8h under the conditions of 120 DEG C, then roasts 5h under the conditions of 600 DEG C,
Tabletting is carried out to the multi-walled carbon nanotube after roasting again, is sieved so that particle size is between 100-200 mesh.
(4) with ammonia be modification gas in output voltage for 25V, discharge frequency be 50Hz under conditions of to through tabletting, sieve
The multi-walled carbon nanotube of the 100-200 mesh obtained after point carries out low temperature plasma modification 15min, obtains while removing phosphatization
The new catalyst of hydrogen, hydrogen sulfide and hydrogen cyanide；As seen from Figure 2, which removes hydrogen phosphide, hydrogen sulfide and hydrogen cyanide
180min, 330min, 210min are respectively reached except rate maintains 100%.
Embodiment 3
(1) with air be modification gas, output voltage be 35V, discharge frequency be 70Hz under conditions of to after tabletting, screening
The multi-walled carbon nanotube of obtained 40-60 mesh carries out Low Temperature Plasma Treating 10min, obtains multi-wall carbon nano-tube after purification
Pipe.
(2) multi-walled carbon nanotube after purification is added to the mixed solution of copper nitrate and ferric nitrate (in mixed solution
The quality of copper nitrate is the 6% of multi-walled carbon nanotube quality, and the quality of ferric nitrate is the 3% of multi-walled carbon nanotube quality) in super
Acoustic frequency is ultrasonic immersing 45min under conditions of 30kHz.
(3) multi-walled carbon nanotube after dipping is dried to 7h under the conditions of 105 DEG C, then roasts 4h under the conditions of 450 DEG C,
Tabletting is carried out to the multi-walled carbon nanotube after roasting again, is sieved so that particle size is between 100-200 mesh.
(4) with ammonia be modification gas in output voltage for 35V, discharge frequency be 70Hz under conditions of to through tabletting, sieve
The multi-walled carbon nanotube of the 100-200 mesh obtained after point carries out low temperature plasma modification 10min, obtains while removing phosphatization
The new catalyst of hydrogen, hydrogen sulfide and hydrogen cyanide；As seen from Figure 3, which removes hydrogen phosphide, hydrogen sulfide and hydrogen cyanide
300min, 420min, 360min are respectively reached except rate maintains 100%.
Embodiment 4
(1) with air be modification gas, output voltage be 40V, discharge frequency be 80Hz under conditions of to after tabletting, screening
The multi-walled carbon nanotube of obtained 40-60 mesh carries out Low Temperature Plasma Treating 12min, obtains multi-wall carbon nano-tube after purification
Pipe.
(2) multi-walled carbon nanotube after purification is added to the mixed solution of copper nitrate and ferric nitrate (in mixed solution
The quality of copper nitrate is the 8% of multi-walled carbon nanotube quality, and the quality of ferric nitrate is the 4% of multi-walled carbon nanotube quality) in super
Acoustic frequency is ultrasonic immersing 50min under conditions of 33kHz.
(3) multi-walled carbon nanotube after dipping is dried to 7.5h under the conditions of 110 DEG C, is then roasted under the conditions of 500 DEG C
4.5h, then tabletting is carried out to the multi-walled carbon nanotube after roasting, is sieved so that particle size is between 100-200 mesh.
(4) with ammonia be modification gas in output voltage for 40V, discharge frequency be 80Hz under conditions of to through tabletting, sieve
The multi-walled carbon nanotube of the 100-200 mesh obtained after point carries out low temperature plasma modification 12min, obtains while removing phosphatization
The new catalyst of hydrogen, hydrogen sulfide and hydrogen cyanide；As seen from Figure 4, the adsorbent is de- to hydrogen phosphide, hydrogen sulfide and hydrogen cyanide
Except effect is best, removal rate maintains 100% and respectively reaches 390min, 510min, 420min.
Claims (4)
1. a kind of preparation method for the catalyst for removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide simultaneously, which is characterized in that specifically include
Following steps:
(1) tabletting is carried out to multi-walled carbon nanotube, the multi-walled carbon nanotube of 40-60 mesh is obtained after grinding, screening, in air atmosphere
Under to multi-walled carbon nanotube carry out Low Temperature Plasma Treating, obtain multi-walled carbon nanotube after purification；
(2) multi-walled carbon nanotube that step (1) obtains is impregnated into the mixed solution of copper nitrate and ferric nitrate, is mixed well,
Ultrasonic immersing 30-60min, wherein supersonic frequency is 25-35kHz；
(3) multi-walled carbon nanotube after dipping is dried, then 3-5h is roasted under the conditions of 300-600 DEG C, after roasting
Multi-walled carbon nanotube tabletting, grind, be sized to 100-200 mesh；
(4) low temperature plasma surface modification is carried out to the multi-walled carbon nanotube after screening under ammonia gas atmosphere, energy is made
Catalyst that is enough while removing hydrogen phosphide, hydrogen sulfide and hydrogen cyanide.
2. removing the preparation method of the catalyst of hydrogen phosphide, hydrogen sulfide and hydrogen cyanide, feature simultaneously according to claim 1
It is: the condition of Low Temperature Plasma Treating in step (1) or (4) are as follows: output voltage 25-45V, discharge frequency 50-
90Hz, processing time are 5-15min.
3. removing the preparation method of the catalyst of hydrogen phosphide, hydrogen sulfide and hydrogen cyanide, feature simultaneously according to claim 1
Be: the quality of copper nitrate is the 2-10% of multi-walled carbon nanotube quality, sulfuric acid in the mixed solution of copper nitrate and ferric nitrate
The quality of iron is the 1-5% of multi-walled carbon nanotube quality.
4. removing the preparation method of the catalyst of hydrogen phosphide, hydrogen sulfide and hydrogen cyanide, feature simultaneously according to claim 1
It is: dry condition in step (3) are as follows: dry 6-8h under the conditions of 90-120 DEG C.
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| CN112275284A (en) * | 2020-10-20 | 2021-01-29 | 大连海事大学 | Method for regulating interaction between metal nanoparticles and carrier by using plasma |
| CN112275284B (en) * | 2020-10-20 | 2023-06-20 | 大连海事大学 | Method for regulating interaction between metal nano particles and carrier by plasma |
| CN112371087A (en) * | 2020-11-10 | 2021-02-19 | 昆明理工大学 | Preparation method and application of activated carbon fiber-based adsorbent for removing hydrogen sulfide, phosphine, arsine and ammonia gas |
| CN112371087B (en) * | 2020-11-10 | 2021-09-21 | 昆明理工大学 | Preparation method and application of activated carbon fiber-based adsorbent for removing hydrogen sulfide, phosphine, arsine and ammonia gas |
| CN112657558A (en) * | 2021-01-29 | 2021-04-16 | 昆明理工大学 | Application of plasma modified catalyst in removal of hydrogen sulfide, phosphine and arsine |
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