CN107442106A - The preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts - Google Patents

The preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts Download PDF

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CN107442106A
CN107442106A CN201710609559.8A CN201710609559A CN107442106A CN 107442106 A CN107442106 A CN 107442106A CN 201710609559 A CN201710609559 A CN 201710609559A CN 107442106 A CN107442106 A CN 107442106A
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metallic oxide
vocs
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吴子豹
王斐
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Nantong New Mstar Technology Ltd
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    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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    • B01J23/34—Manganese
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
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Abstract

The invention discloses the preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts, with nanometer powder TiO2As carrier, transition metal salt is added after forming metal composite oxide layer, the O composite metallic oxide catalyst of multicomponent reactive component is formed after heat treatment.In low light-off temperature（300℃）Under there is higher catalysis oxidation ability to esters and benzene type organic（>98%）.Catalyst is prepared using the normal temperature precipitation method, method is easy.And precious metal element is free of, cost is cheap.Prepared using two-step precipitation, it is ensured that Ce and TiO2It is in close contact, is easy to form solid solution during roasting, there is good oxygen delivery capacity.The transition metal of final load is uniformly distributed in catalyst surface, beneficial to the absorption to VOCs molecules, there is provided avtive spot, improves catalytic capability.Obtained catalyst is used for VOCs being oxidized to CO2And H2O, there is high catalytic conversion efficiency, low light-off temperature, high stability, cheap, there is good application value and prospect.

Description

The preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts
Technical field
The present invention relates to environmental protection technical field, specially VOCs catalytic decompositions O composite metallic oxide catalyst Preparation method.
Background technology
Volatile organic matter VOCs（volatile organic compounds）, refer to that saturated vapor pressure is more than under normal temperature Organic compound of the boiling point below 260 DEG C under 70 Pa, normal pressure, or vapour pressure is more than or equal to 10 Pa under the conditions of 20 DEG C With corresponding volatile whole organic compounds.VOC presses its chemical constitution, can be further divided into：Alkanes, aromatic hydrocarbons, ester Class, aldehydes and other etc..What is identified at present has kind more than 300.It is most common to have benzene,toluene,xylene, styrene, trichlorine Ethene, chloroform, trichloroethanes, diisocyanate（TDI）, two isocyanide toluene esters etc..Volatile organic in room air It is easy to cause acute poisoning during compound excessive concentration, headache, dizziness, cough, Nausea and vomiting or in dead drunk liquor-saturated occurs in the lighter Shape；Hepatotoxicity occurs or even goes into a coma quickly, and some there may also be life danger in severe one.
Industrial VOCs purification techniques mainly has absorption process, absorption method, condensation method, biochemical process, low temperature plasma at present Method, photocatalytic oxidation and Production by Catalytic Combustion Process etc..Production by Catalytic Combustion Process is current most widely used VOCs purification techniques, refers to utilization Activation energy required for the reaction of catalyst degradation oxidation operation, improves reaction efficiency, VOCs is carried out into nothing at a lower temperature Flame burns, and is eventually converted into CO2And H2The innocuous substances such as O.At present, VOCs catalysts for treating mainly includes noble metal（Pd、 Pt, Ru etc.）, transition metal（Cu, Mn, Mo, Ni, Co, Fe, Cr etc.）And rare earth metal（Ce, La etc.）And other composite oxides. Although noble metal catalyst catalytic efficiency is higher, expensive, this limits the popularization and application of catalyst to a certain extent. Therefore, it is technical problem urgently to be resolved hurrily at present to prepare high-performance and cheap catalyst.
The content of the invention
It is an object of the invention to provide one kind to have high catalytic activity, low light-off temperature, long life and cost low Honest and clean new VOCs oxidation catalysts.Semiconductor TiO2As carrier, the CeO of generation2With TiO2Eutectic is formed to provide very well Oxygen delivery capacity, the element such as Ag, Cu, Ni, Fe, Co, Mo, Mn that surface is formed after high-temperature roasting can effectively adsorb oxygen, compound The synergy of metal oxide each component improves catalysis oxidation ability of the catalyst to VOCs gases.Prepared with this technology Catalyst, not only catalytic capability is efficient but also cheap, can be widely popularized use, to solve to propose in above-mentioned background technology The problem of.
To achieve the above object, the present invention provides following technical scheme：A kind of VOCs catalytic decompositions are aoxidized with composition metal The preparation method of thing catalyst, comprises the following steps：
Step 1, by appropriate nano-TiO purchased in market2Powder is dissolved in distilled water, is configured to 0.05 M solution；
Step 2: take a certain amount of Ce (NO3)3•6H2O is dissolved in step 1 resulting solution, and stirring and dissolving 1H obtains mixing molten Liquid；
Step 3, take a certain amount of NaOH and NH3•H2O is configured to 0.1 M precipitating reagent, and precipitating reagent is added with vigorous stirring Enter in step 2 solution；
Step 4, after the solution that step 3 obtains is well mixed, heating stirring 1H in 80 DEG C of oil baths is placed in, is put into after filtering while hot 12H is dried in 80 DEG C of baking ovens, obtains Ce/TiO2Mixture powder；
Step 5, the solid powder that step 4 is obtained again disperse after, weigh a certain amount of transition metal salt (Ag, Cu, Ni, Fe, Co, Mo, Mn) 0.1M solution is configured to, it is 18 ~ 25% additions by theoretical transition metal/cerium titanium mixture quality ratio, then adds Enter 0.1 M precipitating reagent；
Step 6, after step 5 resulting solution is well mixed, the H of heating stirring 1 in 80 DEG C of oil baths is placed in, is put into after filtering while hot 12 H are dried in 80 DEG C of baking ovens, grinding obtains solid powder；
Step 7, solid powder obtained by step 6 is placed in tube furnace, in 400 DEG C and N2Under atmosphere, 5H is calcined, is obtained compound Metal oxide catalyst.
Preferably, the mixed solution mol ratio obtained in step 2 is Ce/Ti=3/1 ~ 1/5.
Preferably, it is [OH that precipitating reagent addition, which controls mol ratio, in step 3-]/[Ce3+]=3/1~4/1。
Preferably, O composite metallic oxide catalyst is prepared into slurry and carried coated on ceramics, molecular sieve, the fixed of activated carbon On body, for being carbon dioxide and water by volatile organic matter oxidation Decomposition.
Preferably, volatile organic matter is included in ethanol, ethyl acetate, toluene, butyl acetate, dimethylbenzene, styrene It is one or more of.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）In low light-off temperature（300℃）Under there is higher catalysis oxidation ability to esters and benzene type organic（>98%）.
（2）The inventive method prepares catalyst using the normal temperature precipitation method, and method is easy.And be free of precious metal element, cost It is cheap.
（3）Prepared using two-step precipitation, it is ensured that Ce and TiO2It is in close contact, is easy to form solid solution during roasting, has Good oxygen delivery capacity.The transition metal of final load is uniformly distributed in catalyst surface, beneficial to the suction to VOCs molecules It is attached, there is provided avtive spot, to improve catalytic capability.
To sum up, the catalyst that the present invention is prepared is used for VOCs being oxidized to CO2And H2O, there is high catalyzed conversion effect Rate, low light-off temperature, high stability, it is cheap the advantages that, there is good application value and prospect.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects Enclose.
The preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts, with nanometer powder TiO2As carrier, Transition metal salt is added after forming metal composite oxide layer, the metal composite oxide of multicomponent reactive component is formed after heat treatment Catalyst, comprise the following steps that:
Step 1: by appropriate commercially available nano-TiO2Powder (P25) is dissolved in distilled water, is configured to 0.05 M solution.
Step 2: take a certain amount of Ce (NO3)3•6H2O is added in step 1 resulting solution, stirring and dissolving 1H.Wherein, control Mol ratio Ce/Ti=3/1 ~ 1/5 processed.
Step 3: take a certain amount of NaOH and NH3•H2O is configured to 0.1M precipitating reagent, by precipitating reagent with vigorous stirring Add in step 2 solution, it is [OH that addition, which controls mol ratio,-]/[Ce3+]=3/1~4/1。
Step 4: after above-mentioned solution is well mixed, it is placed in heated at constant temperature in 80 DEG C of oil baths and stirs 1H, be put into after filtering while hot 12H is dried in 80 DEG C of baking ovens, obtains Ce/TiO2Mixture powder.
Step 5: after above-mentioned solid powder is disperseed again, weighing a certain amount of transition metal salt, (Mn is configured to 0.1 M Solution, by theoretical transition metal/Ce/TiO2Mix body mass ratio=18 ~ 25% to add, then add 0.1 M precipitating reagent.
Step 6: after above-mentioned solution is well mixed, it is placed in heated at constant temperature in 80 DEG C of oil baths and stirs 1H, be put into after filtering while hot 12 H are dried in 80 DEG C of baking ovens, grinding obtains solid powder.
Step 7: above-mentioned solid is placed in tube furnace, in 400 DEG C and N2Under atmosphere, 5H is calcined, obtains composition metal oxygen Compound catalyst.
The above-mentioned catalyst being prepared is used for catalysis oxidation VOCs gases, reaction condition is 220 ~ 400 DEG C, by VOCs Oxidation Decomposition is CO2And H2O.The volatile organic matter includes ethanol, ethyl acetate, toluene, butyl acetate, dimethylbenzene, benzene second It is one or more of in alkene.
Embodiment 1
（1）Weigh 3.32 g TiO2Powder is placed in 1000 mL conical flasks, adds the min of 400 mL distilled water stirring and dissolving 30.
（2）Weigh 3.61 g Ce (NO3)3•6H2O adds above-mentioned（1）In solution, continue the min of stirring and dissolving 30.
（3）Weigh 1.6 g NaOH+20 mL NH3•H2O, add 400 mL distilled water stirring and dissolvings and precipitating reagent is made.
（4）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（2）Resulting solution, after being added dropwise, Conical flask is placed in oil bath pan, filtered while hot after stirring 1H at 80 DEG C of constant temperature, gained solid is in 80 DEG C of baking ovens
10H is dried, grinds to obtain Ce/TiO2Mixture A.
（5）Take（4）The g of gained mixture A 0.95, add in 150 mL distilled water, the min of stirring and dissolving 30.Weigh Cu (NO3)20.33 g is added, and continues the min of stirring and dissolving 30.
（6）Weigh 0.16 g NaOH+2 mL NH3•H2O, add stirring and dissolving in 40 mL distilled water and precipitating reagent is made.
（7）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（5）Resulting solution, after being added dropwise, Conical flask is placed in oil bath pan, filtered while hot after stirring 1H at 80 DEG C of constant temperature, gained solid is in 80 DEG C of baking ovens
10H is dried, grinds to obtain solid powder B.
（8）Solid powder B is placed in tube furnace, at 400 DEG C and N2Under atmosphere, 5H is calcined, obtains metal composite oxide Catalyst.
（9）Above-mentioned catalyst is used to handle VOCs gases, wherein, active testing condition：300 DEG C of temperature, concentration 900- 1100ppm, gases used detection is ethanol:Ethyl acetate:Toluene:Butyl acetate:Dimethylbenzene:Styrene solution by volume 3: 3:1:3:3:3 are blended in the gas evaporated at 50 DEG C.Experimental facilities：VOCs catalysis oxidations gas chromatographic detection evaluation dress Put.
Embodiment 2
（1）Weigh 0.332 g TiO2Powder is placed in 250 mL conical flasks, adds the min of 100 mL distilled water stirring and dissolving 30.
（2）Weigh 0.361 g Ce (NO3)3•6H2O adds above-mentioned（1）In solution, continue the min of stirring and dissolving 30.
（3）Weigh 0.16 g NaOH+2 mL NH3•H2O, add 40mL distilled water stirring and dissolving and precipitating reagent is made.
（4）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（2）Resulting solution, it is added dropwise Afterwards, conical flask is placed in oil bath pan, 1H is stirred at 80 DEG C of constant temperature.
（5）Weigh 0.17 g AgNO3It is placed in after being dissolved in 50 mL distilled water in separatory funnel.（4）Solution is reduced to It is added dropwise while stirring after room temperature.
（6）Weigh 0.16 g NaOH+2 mL NH3•H2O, add stirring and dissolving in 40 mL distilled water and precipitating reagent is made.
（7）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（5）Resulting solution, after being added dropwise, Conical flask is placed in oil bath pan, filtered while hot after stirring 1H at 80 DEG C of constant temperature, gained solid is in 80 DEG C of baking ovens
10H is dried, grinds to obtain solid powder.
（8）Solid powder is placed in tube furnace, at 400 DEG C and N2Under atmosphere, 5H is calcined, metal composite oxide is obtained and urges Agent.
（9）Above-mentioned catalyst is used to handle VOCs gases, wherein, active testing condition：300 DEG C of temperature, concentration 900- 1100 ppm, gases used detection is ethanol:Ethyl acetate:Toluene:Butyl acetate:Dimethylbenzene:Styrene solution is by volume 3:3:1:3:3:3 are blended in the gas evaporated at 50 DEG C.Experimental facilities：VOCs catalysis oxidations gas chromatographic detection evaluation dress Put.
Embodiment 3
（1）Weigh 3.32 g TiO2Powder is placed in 1000 mL conical flasks, adds the min of 400 mL distilled water stirring and dissolving 30.
（2）Weigh 3.61gCe (NO3)3•6H2O adds above-mentioned（1）In solution, continue the min of stirring and dissolving 30.
（3）Weigh 1.6 g NaOH+20 mL NH3•H2O, add 400 mL distilled water stirring and dissolvings and precipitating reagent is made.
（4）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（2）Resulting solution, after being added dropwise, Conical flask is placed in oil bath pan, filtered while hot after stirring 1H at 80 DEG C of constant temperature, gained solid is in 80 DEG C of baking ovens
10H is dried, grinds to obtain Ce/TiO2Mixture A.
（5）Take（4）The g of gained mixture A 0.95, add in 150 mL distilled water, the min of stirring and dissolving 30.Weigh anhydrous MnCl20.48 g is added, and continues stirring and dissolving 30min.
（6）Weigh 0.16 g NaOH+2 mL NH3•H2O, add stirring and dissolving in 40 mL distilled water and precipitating reagent is made.
（7）Precipitating reagent is placed in separatory funnel, is added dropwise with vigorous stirring（5）Resulting solution, after being added dropwise, Conical flask is placed in oil bath pan, filtered while hot after stirring 1H at 80 DEG C of constant temperature, gained solid is in 80 DEG C of baking ovens
10H is dried, grinds to obtain solid powder B.
（8）Solid powder B is placed in tube furnace, at 400 DEG C and N2Under atmosphere, 5H is calcined, obtains metal composite oxide Catalyst.
（9）Above-mentioned catalyst is used to handle VOCs gases, wherein, active testing condition：300 DEG C of temperature, concentration 900- 1100 ppm, gases used detection is ethanol:Ethyl acetate:Toluene:Butyl acetate:Dimethylbenzene:Styrene solution is by volume 3:3:1:3:3:3 are blended in the gas evaporated at 50 DEG C.Experimental facilities：VOCs catalysis oxidations gas chromatographic detection evaluation dress Put.
In preparation method of the present invention, Ce/Ti=3/1 ~ 1/5, transition metal and cerium magnesium-titanium solid solution mass ratio be 10% ~ 30%, isothermal reaction condition is 70 ~ 90 DEG C and is stirred vigorously the min of 30 min ~ 90, is placed in after being dried in 80 DEG C of baking ovens in tube furnace, 5H is calcined under 400 DEG C and nitrogen atmosphere final catalyst is made.
Although invention has been described for examples detailed above, the invention is not limited in above-mentioned specific embodiment party Formula, above-mentioned embodiment is only schematical, rather than restricted.Such as Ce/TiO2The composition deformation of mixture Can be Ce/Al2O3,Ce/SiO2,Ce/ZrO2,Mn/TiO2, Mn/Al2O3, Mn/SiO2, Mn/ZrO2Deng transition metal Can be Ag, Cr, Cu, Ni, Fe, Co, Mo etc..One of ordinary skill in the art can also make very under the enlightenment of the present invention Shape changeable, these are belonged in protection scope of the present invention.

Claims (5)

  1. The preparation method of 1.VOCs catalytic decomposition O composite metallic oxide catalysts, it is characterised in that：Comprise the following steps：
    Step 1, by appropriate nano-TiO purchased in market2Powder is dissolved in distilled water, is configured to 0.05 M solution；
    Step 2: take a certain amount of Ce (NO3)3•6H2O is dissolved in step 1 resulting solution, and stirring and dissolving 1H obtains mixing molten Liquid；
    Step 3, take a certain amount of NaOH and NH3•H2O is configured to 0.1 M precipitating reagent, and precipitating reagent is added with vigorous stirring In step 2 solution；
    Step 4, after the solution that step 3 obtains is well mixed, heating stirring 1H in 80 DEG C of oil baths is placed in, is put into after filtering while hot 12H is dried in 80 DEG C of baking ovens, obtains Ce/TiO2Mixture powder；
    Step 5, after the solid powder that step 4 is obtained disperses again, weigh a certain amount of transition metal salt（Ag、Cu、Ni、 Fe、Co、Mo、Mn）0.1M solution is configured to, is 18 ~ 25% additions by theoretical transition metal/cerium titanium mixture quality ratio, then adds Enter 0.1 M precipitating reagent；
    Step 6, after step 5 resulting solution is well mixed, the H of heating stirring 1 in 80 DEG C of oil baths is placed in, is put into after filtering while hot 12 H are dried in 80 DEG C of baking ovens, grinding obtains solid powder；
    Step 7, solid powder obtained by step 6 is placed in tube furnace, in 400 DEG C and N2Under atmosphere, 5H is calcined, is obtained compound Metal oxide catalyst.
  2. 2. the preparation method of VOCs catalytic decompositions O composite metallic oxide catalyst according to claim 1, its feature It is：The mixed solution mol ratio obtained in the step 2 is Ce/Ti=3/1 ~ 1/5.
  3. 3. the preparation method of VOCs catalytic decompositions O composite metallic oxide catalyst according to claim 1, its feature It is：It is [OH that precipitating reagent addition, which controls mol ratio, in the step 3-]/[Ce3+]=3/1~4/1。
  4. 4. the preparation method of VOCs catalytic decompositions O composite metallic oxide catalyst according to claim 1, its feature It is：The O composite metallic oxide catalyst is prepared into slurry and is coated on the immobilization carrier of ceramics, molecular sieve, activated carbon, For being carbon dioxide and water by volatile organic matter oxidation Decomposition.
  5. 5. the preparation method of VOCs catalytic decompositions O composite metallic oxide catalyst according to claim 4, its feature It is：The volatile organic matter include ethanol, ethyl acetate, toluene, butyl acetate, dimethylbenzene, one kind in styrene or It is several.
CN201710609559.8A 2017-07-25 2017-07-25 The preparation method of VOCs catalytic decomposition O composite metallic oxide catalysts Pending CN107442106A (en)

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CN110038566A (en) * 2019-04-29 2019-07-23 南京融众环境工程研究院有限公司 A kind of loaded nano Ag/MnCeOx/ Attapulgite Catalyst and preparation method thereof
CN111644180A (en) * 2020-03-18 2020-09-11 河北科技大学 Catalyst for low-temperature combustion of VOCs (volatile organic compounds) and preparation method thereof
CN111672543A (en) * 2020-06-10 2020-09-18 大连海事大学 Low-temperature plasma and modified molecular sieve catalyst synergetic one-step CH conversion4And CO2Method for preparing acetic acid
CN112458495A (en) * 2020-11-27 2021-03-09 浙江大学衢州研究院 Electrocatalyst of ruthenium-based transition metal oxide solid solution and preparation method and application thereof
CN114160147A (en) * 2021-11-29 2022-03-11 华南理工大学 Composite oxide catalyst for synchronously removing VOCs and NOx in sulfur-containing flue gas and preparation method and application thereof
CN114939414A (en) * 2022-06-23 2022-08-26 山东亮剑环保新材料有限公司 Preparation method of supported copper oxide catalyst
CN115254087A (en) * 2021-04-30 2022-11-01 中国石油天然气股份有限公司 Supported catalyst and preparation method and application thereof
CN115505097A (en) * 2022-08-05 2022-12-23 北京工业大学 Activated polyurethane and preparation method thereof, and composite catalyst for VOCs catalytic degradation and preparation method thereof
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CN115254087B (en) * 2021-04-30 2024-06-28 中国石油天然气股份有限公司 Supported catalyst and preparation method and application thereof

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CN108355486B (en) * 2018-03-07 2020-12-15 广州握胜环保科技有限公司 Low-temperature plasma concerted catalysis device
CN109046326A (en) * 2018-08-29 2018-12-21 香港大学 A kind of vacuum ultraviolet light catalytic purifying material and its preparation method and application
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CN111644180A (en) * 2020-03-18 2020-09-11 河北科技大学 Catalyst for low-temperature combustion of VOCs (volatile organic compounds) and preparation method thereof
CN111672543A (en) * 2020-06-10 2020-09-18 大连海事大学 Low-temperature plasma and modified molecular sieve catalyst synergetic one-step CH conversion4And CO2Method for preparing acetic acid
CN111672543B (en) * 2020-06-10 2023-07-04 大连海事大学 Low-temperature plasma and modified molecular sieve catalyst cooperate to convert CH in one step 4 And CO 2 Process for preparing acetic acid
CN112458495A (en) * 2020-11-27 2021-03-09 浙江大学衢州研究院 Electrocatalyst of ruthenium-based transition metal oxide solid solution and preparation method and application thereof
CN112458495B (en) * 2020-11-27 2022-05-10 浙江大学衢州研究院 Electrocatalyst of ruthenium-based transition metal oxide solid solution and preparation method and application thereof
CN115254087B (en) * 2021-04-30 2024-06-28 中国石油天然气股份有限公司 Supported catalyst and preparation method and application thereof
CN115254087A (en) * 2021-04-30 2022-11-01 中国石油天然气股份有限公司 Supported catalyst and preparation method and application thereof
CN116060015B (en) * 2021-10-29 2024-05-03 中国科学院理化技术研究所 Synthesis method of photo-thermal synergistic adsorption catalyst
CN116060015A (en) * 2021-10-29 2023-05-05 中国科学院理化技术研究所 Synthesis method of photo-thermal synergistic adsorption catalyst
CN114160147A (en) * 2021-11-29 2022-03-11 华南理工大学 Composite oxide catalyst for synchronously removing VOCs and NOx in sulfur-containing flue gas and preparation method and application thereof
CN114939414A (en) * 2022-06-23 2022-08-26 山东亮剑环保新材料有限公司 Preparation method of supported copper oxide catalyst
CN115505097B (en) * 2022-08-05 2023-10-13 北京工业大学 Activated polyurethane and preparation method thereof, and composite catalyst for VOCs catalytic degradation and preparation method thereof
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