CN101199885A - Method for easy volatility Cl generation aromatic low temperature catalyst burning eliminable - Google Patents
Method for easy volatility Cl generation aromatic low temperature catalyst burning eliminable Download PDFInfo
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- CN101199885A CN101199885A CNA200710172466XA CN200710172466A CN101199885A CN 101199885 A CN101199885 A CN 101199885A CN A200710172466X A CNA200710172466X A CN A200710172466XA CN 200710172466 A CN200710172466 A CN 200710172466A CN 101199885 A CN101199885 A CN 101199885A
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Abstract
The invention discloses a method of removing volatilizable chloro-substituted-dutrex pollutant in the environment by complete catalytic combustion. Molecular sieve-laden rare-earth-oxide and transition metal oxide are used to be catalyzer and the air which is used as oxidant is brought to a reactor, so that chloric-volatilizable dutrex is completely combusted under the effect of catalyzer and is transformed into carbon dioxide, chlorine hydride and chlorine. The completely combusted tail-gas can be emitted into the air after being absorbed (acid gases like chlorine hydride or chlorine) by dilute alkali solution. The invention which adopts highly-active catalyzer is free of subsidiary product and secondary pollution and of strong anti-chlorine poisoning ability and long service life of catalyzer, so that the invention is very applied to the removal of halogen-containing organic compound, in particular of volatilizable chloric-dutrex pollutant by low temperature complete catalytic combustion.
Description
Technical field
The invention belongs to the catalytic combustion environmental protection technical field, specially refer to a kind of method that the easy-to-volatile chloroarene low-temperature catalytic burning is eliminated that is used for.
Background technology
The chlorine-containing volatile hydro carbons not only can cause serious harm to human beings'health, also can cause influence lasting, accumulation property to biosystem, and can destroy atmospheric ozone layer.It all is chloride organic compound that 12 persistent organic pollutions of classifying the first place as are arranged in the united nations environment project international treaties.The chlorine-containing volatile hydro carbons divides the aromatic hydrocarbon chloride, as chlorobenzene, dichloro-benzenes, and non-aromatic face cream fat hydro carbons chloride, as dichloroethanes, trichloro-ethylene, tetrachloro-ethylene, chloromethanes and methane polychloride etc., the former results from waft white, the heat treatment of chlorine-containing compound and the recovery of metal of the wood pulp of chloro oxidant; The latter mainly results from chlorine industry oxygen chlorine legal system and is equipped with industries such as vinyl chloride process, process hides, washing, pharmacy.Because the muriatic process of above-mentioned generation all relates to the industry of present stage national economy, the discharging of a large amount of chlorine-containing compounds is inevitable.Therefore, the pollution that is caused from source elimination chlorine-containing volatile hydro carbons does not also possess possibility at present.And the pollution that the method elimination chlorine-containing volatile hydro carbons of taking post processing is brought becomes unique feasible approaches and methods.
In recent years, the comprehensive regulation to volatile organic compound (VOCs) had received concern more and more widely.Methods such as flame combustion, catalytic combustion and absorption are to eliminate the common method of these pollutants.But flame combustion need carry out under higher temperature (1000 ℃), and energy consumption is big; And this method handle also may cause aspect the chloride hydro carbons more highly toxic two uh English (Dioxins) pollutant, as polychlorinated dibenzo-2 uh English (PCDD) and polychlorinated dibenzo (PCDF).Absorption method as one of organic pollution common method is unsatisfactory for the treatment effect of low concentration pollutant, and its adsorption efficiency is extremely low.For the elimination of the chloride aromatic hydrocarbon of effumability, the method for multiple novelty has been proposed recently in succession, as biological processes, photocatalytic degradation, hydrogenation-dechlorination etc.But these methods are not to have defective technically, are exactly that disposal cost is high, all are in the laboratory research state mostly, are difficult for realizing industrialization, industrialization.
Advantages such as the pollution that catalytic combustion is eliminated organic compound is a kind of energy-conservation, economic, effective processing method, compares with flame combustion, and it has, and ignition temperature is low, the time of staying short, required reactor is little, secondary pollution is few.Therefore, catalytic combustion is obtaining using widely aspect the elimination volatile organic compound.
Chlorination aromatic hydrocarbon such as chlorobenzene, dichlorobenzene, dioxin, its catalytic combustion is mainly used in the exhaust-gas treatment of incinerator, and the research work of this direction and the exploitation of technology concentrate on Japan.Representational patent has Jpn.Kokai Tokkyo Koho JP 2001286729 A2, Jpn.Kokai Tokkyo Koho JP2001286730 A2, Jpn.Kokai Tokkyo Koho JP 2001286734 A2, Jpn.Kokai TokkyoKoho JP 10085559 A2 etc.Use fuel gas and air to burn.The main catalyst activity component of using is transition metal and noble metal, and carrier is SiO
2, Al
2O
3, TiO
2, ZrO
2Though precious metal catalyst is active higher, is easy to fluorine poisoning; The anti-poisoning capability of non-precious metal catalyst is stronger, but selectivity is lower, often has polystream to produce.
Part chlorination aromatic hydrocarbon catalytic combustion granted patent has:
[1]Nawama，Junichi；Moriya，Yoshifumi；Suzuki，Tadashi；Kuchino，Kunikazu，Jpn.Kokai Tokkyo Koho JP 2002219364 A2
[2]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai Tokkyo Koho JP 2001286729 A2
[3]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai Tokkyo Koho JP 2001286730 A2
[4]Kajikawa，Osamu；Wang，Hsiang Sheng；Kawase，Noboru；Maeda，Takeshi，Jpn.Kokai Tokkyo Koho JP 2001009284 A2.
[5]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai Tokkyo Koho JP 2001286734 A2
[6]Moriya，Yoshifumi；Nawama，Junichi；Tokumitsu，Shuzo，Jpn.Kokai TokkyoKoho JP 2001327869 A2
These patent works mainly are to be active component with the transition metal, catalytic combustion purify two in the incinerator uh English.
All there is shortcoming more or less in the catalyst that above-mentioned chlorine-containing volatile hydro carbons catalytic combustion elimination is adopted, low as catalytic combustion activity, have the polychlorocarbon class to produce, easily cause secondary pollution in the catalyticing combustion process, the catalyst activity component runs off easily, catalyst life short.
Summary of the invention
The objective of the invention is to disclose a kind of easy-to-volatile chloroarene low-temperature catalytic burning method that is used for.This method is a combustion catalyst with molecular sieve carried rare earth oxide and transition metal oxide, its activity is high, no coupling product generates, do not cause secondary pollution, anti-fluorine poisoning ability is strong, catalyst life is long, be specially adapted to complete catalytic combustion and eliminate halogen-containing organic compound, especially effumability chloro-hydrocarbons pollutant.
The invention provides a kind of catalyst that the easy-to-volatile chloroarene low-temperature catalytic burning is eliminated that is used for, this catalyst mainly is made of molecular sieve carried rare earth oxide and transition metal oxide, wherein molecular sieve is commercially available acidic molecular sieve, a kind of as in H-ZSM-5, Y type and the HBETA type molecular sieve, its content is 70～90wt%; Rare earth oxide is one or several composition of lanthana, cerium oxide, neodymia, oxidation Gadolinium, and its content is 10～30wt%; Transition metal oxide is one or several composition of cupric oxide, iron oxide, oxidation alum, manganese oxide, cobalt oxide, tungsten oxide, and its content is 0～20wt%.
Supported rare earth oxide and transition metal oxide adopt incipient impregnation method well known in the art on acidic molecular sieve.The rare earth element presoma is selected from the nitrate of rare earth, the presoma of transition metal is selected from nitrate, oxalates, acetate, carbonate.
The invention provides a kind of method that complete catalytic combustion is eliminated environment easy-to-volatile chloroarene pollutant that is used for.The invention provides following technology path:
In the presence of catalyst, adopt and bring reactor into as the air of oxidant, make the completing combustion under the effect of catalyst of chlorine-containing volatile aromatic hydrocarbon, chlorine-containing volatile aromatic hydrocarbon is transformed into carbon dioxide, hydrogen chloride and chlorine.Completing combustion tail gas can adopt dilute alkaline soln to absorb back emptying such as (hydrogen chloride/chlorine sour gas);
Reaction pressure is 0.1～1Mpa, preferred 0.1～0.5Mpa, especially 0.1Mpa, and near normal pressure, temperature is 100～400 ℃, is preferably 150～450 ℃, especially 350 ℃;
Catalyst consumption, must be enough to make chlorine-containing volatile aromatic hydrocarbon existing under the situation at humid air, change into carbon dioxide and hydrogen chloride, generally speaking, the concentration of chlorine-containing volatile aromatic hydrocarbon is 0.05～5vol% in the waste gas of chlorine-containing volatile aromatic hydrocarbon, and every gram catalyst treatment exhausted air quantity is 10～30L per hour;
Said humid air is the air that contains steam, and its water concentration must satisfy the chlorine that reaction is generated and all be converted into hydrogen chloride, but can not make water become the mortifier of reaction, and the concentration of suitable water is 0.1～15vol% in the air.
Adopt method of the present invention, in humid air, under lower reaction temperature, in the presence of catalyst, can long-term and stably the chlorine-containing volatile aromatic hydrocarbon in the waste gas be transformed into carbon dioxide and hydrogen chloride, activity of such catalysts does not reduce.
Catalyst provided by the invention has characteristics such as preparation technology is simple, cheap, catalytic activity is high, anti-fluorine poisoning ability is strong, the life-span is long; Technology path is convenient and practical, and the catalytic combustion that can be widely used in the chlorine-containing volatile arene pollutant in papermaking, pharmacy, process hides, washing and the chemical industry waste gas is eliminated.
The specific embodiment
Embodiment 1
With commercially available 50g cerous nitrate (Ce (NO
3)
3) 6H
2O and 6g copper nitrate Cu (NO
3)
2) 3H
2O is dissolved in the 80mL ionized water, and this solution places 50 ℃ constant temperature water bath to stir 0.5h; In this solution, add 80g H-ZSM-5 molecular sieve (Si/Al=35) then, constantly stir in the process, after liquid to be impregnated is all absorbed by the H-ZSM-5 molecular sieve, static, aging 12h, 100 ℃ of dry 24h in baking oven then, move in the roaster temperature programming in air atmosphere, 1 ℃ of per minute, be raised to 180 ℃, insulation 2h; Temperature programming again, 10 ℃ of per minutes are raised to 550 ℃ with temperature, during insulation 4h, can obtain 2%CuO-20%CeO
2/ H-ZSM-5 (CuO: CeO by weight
2Be 1: 10) catalyst.
Embodiment 2
With implement 1 method make 10%Fe
2O
3-20%CeO
2/ H-ZSM-5 (Fe by weight
2O
3: CeO
2Being 1: 2) catalyst is embodiment 2.
Embodiment 3
With implement 1 method make 20%MnO
2-10%CeO
2/ H-ZSM-5 (MnO by weight
2: CeO
2Being 2: 1) catalyst is embodiment 3.
Embodiment 4
With commercially available 53g lanthanum nitrate (La (NO
3)
3) 6H
2O and copper nitrate 6.4g Cu (NO
3)
2) 3H
2O is dissolved in the 80mL ionized water, and this solution places 50 ℃ constant temperature water bath to stir 0.5h; In this solution, add 80g Y molecular sieve (Si/Al=6) then, constantly stir in the process, after liquid to be impregnated is all absorbed by Y molecular sieve, static, aging 12h, 100 ℃ of dry 24h in baking oven then, move in the roaster, roasting in air atmosphere, method can obtain 2%CuO-20%La shown in embodiment 1
2O
3/ Y (CuO: La by weight
2O
3Be 1: 10) catalyst.
Embodiment 5
With implement 4 method make 10%NiO-20%La
2O
3/ Y (NiO: La by weight
2O
3Being 1: 2) catalyst is embodiment 5.
Embodiment 6
With implement 4 method make 20%Co
2O
3-10%La
2O
3/ Y (Co by weight
2O
3: La
2O
3Being 2: 1) catalyst is embodiment 6.
Embodiment 7
All catalyst chlorobenzene combustion activities are estimated in fixed bed little anti-(internal diameter 6mm quartz) and are carried out, and catalyst consumption is 200mg, and temperature adopts K type thermocouple to control automatically.Chlorobenzene adopts 100 serial KDS120 type micro-injection pumps injections of U.S. Stoelting company to enter vaporizer, is that the humid air of 5vol% is mixed into reactor and burns with dry air, water concentration respectively then.Total flow adopts mass flowmenter control, and the concentration of chlorobenzene is controlled at 0.1vol%, and the amount that every gram catalyst is per hour handled waste gas is 15L, is 120m/h through the gas line speed of reactor.Reaction pressure is 0.1Mpa, and the conversion ratio of chlorobenzene and the relation of reaction temperature see Table 1, T in the table
10%, T
50%, T
98%Be respectively conversion ratio and reach 10%, 50%, 98% o'clock required reaction temperature.The key reaction product is the chlorine of carbon dioxide, hydrogen chloride and trace.
Chlorobenzene catalytic combustion properties on table 1 different catalysts
| Catalyst | Dry air | Humid air | ||||
| T10％(℃) | T 50％(℃) | T 98％(℃) | T 10％(℃) | T 50％(℃) | T 98％(℃) | |
| Embodiment 1 | 230 | 271 | 315 | 243 | 290 | 350 |
| Embodiment 2 | 175 | 256 | 287 | 211 | 291 | 323 |
| Embodiment 3 | 105 | 225 | 265 | 156 | 265 | 306 |
| Embodiment 4 | 203 | 245 | 306 | 240 | 302 | 345 |
| Embodiment 5 | 208 | 268 | 347 | 238 | 309 | 398 |
| Embodiment 6 | 211 | 239 | 290 | 244 | 280 | 339 |
Embodiment 8
The concentration of chloride aromatic hydrocarbon organic compound is controlled at 1～3%, is that the humid air of 0.5vol% is mixed into reactor and burns with dry air, water concentration respectively, and the amount that every gram catalyst is per hour handled waste gas is 10L, at embodiment 20%MnO
2-10%CeO
2On/H-ZSM-5 the catalyst catalytic combustion properties of dissimilar chlorine-containing volatile arenes (CVOCs) is investigated, be the results are shown in Table 2.
The catalytic combustion result of the different chlorine-containing volatile chlorinated hydrocarbons of table 2
| Chlorine-containing organic compounds | Dry air | Humid air | ||||
| T10％(℃) | T 50％(℃) | T 98％(℃) | T 10％(℃) | T 50％(℃) | T 98％(℃) | |
| Dichloro-benzenes | 124 | 189 | 265 | 169 | 238 | 301 |
| Trichloro-benzenes | 169 | 206 | 273 | 205 | 251 | 321 |
| Tetrachlorobenzene | 231 | 289 | 336 | 275 | 321 | 385 |
The result shows, 20%MnO
2-10%CeO
2/ H-ZSM-5 catalyst all has good catalytic combustion properties to dissimilar chlorine-containing volatile arenes.
Embodiment 9
Change the concentration of chlorobenzene, water in air branch concentration is controlled at 0.45～1%, the amount that every gram catalyst is per hour handled waste gas is 20L, and reaction pressure is at 0.3～0.5Mpa, at 20%MnO
2-10%CeO
2/ H-ZSM-5,2%CuO-20%CeO
2Investigated of the influence of variable concentrations chlorobenzene on the/H-ZSM-5 catalyst, the results are shown in Table 3 catalytic combustion properties.
Table 3 variable concentrations chlorobenzene is to 20%MnO
2-10%CeO
2/ H-ZSM-5,2%CuO-20%CeO
2The influence of/H-ZSM-5 catalyst combustibility
| Chlorobenzene concentration (vol%) | Dry air | Humid air | |||||
| T 10％ (℃) | T 50％ (℃) | T 98％ (℃) | T 10％ (℃) | T 50％ (℃) | T 98％ (℃) | ||
| 20％MnO 2-10％CeO 2 /H-ZSM-5 | 0.05 | 110 | 239 | 285 | 175 | 290 | 332 |
| 0.1 | 112 | 236 | 278 | 169 | 283 | 324 | |
| 0.2 | 109 | 225 | 268 | 146 | 253 | 304 | |
| 2％CuO-20％CeO 2 /H-ZSM-5 | 0.05 | 240 | 286 | 336 | 258 | 319 | 386 |
| 0.1 | 235 | 276 | 326 | 249 | 311 | 365 | |
| 0.2 | 214 | 236 | 312 | 236 | 289 | 353 | |
The result shows, 20%MnO
2-10%CeO
2/ H-ZSM-5,2%CuO-20%CeO
2/ H-ZSM-5 catalyst has good catalytic combustion properties for the chlorobenzene of low concentration.Thus, the catalyst among the present invention can be widely used in the catalytic combustion elimination of variable concentrations (organic pollution that comprises low concentration and high concentration) chlorine-containing volatile arene.
Embodiment 10
Change every gram catalyst and per hour handle the amount of waste gas, reaction pressure is at 0.1Mpa, and the concentration of chlorobenzene is 0.1vol%, use air to be oxidizing gas, air is a dry air, on embodiment 3 catalyst, investigated of the influence of different air speeds, the results are shown in Table 4 the chlorobenzene catalytic combustion properties.
Table 4 air speed is to 20%MnO
2-10%CeO
2The influence of/H-ZSM-5 catalyst combustibility
| Exhaust-gas treatment amount (L/h) | Chlorobenzene conversion ratio (%) | |||||||
| Reaction temperature (℃) | ||||||||
| 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | |
| 15 20 30 45 | 9.1 6.4 2.6 2.5 | 15.6 7.9 4.3 3.8 | 36.8 23.7 10.8 5.1 | 90.6 56.4 30.8 12.6 | 97.3 97.0 68.9 46.8 | ＞99.8 ＞99.8 90.3 70.9 | ＞99.8 99 97.8 90.1 | ＞99.8 99.1 99.1 91.3 |
The result shows, 20%MnO
2-10%CeO
2/ H-ZSM-5
2Exhaust-gas treatment amount hourly can be up to 3.01L/g catalyst (pressing 90% chlorobenzene by conversion calculations) down at 375 ℃ on the catalyst, and this commercial Application for catalyst is very crucial and important beyond doubt.
Embodiment 11
In the reaction unit of embodiment 7, the amount that every gram catalyst is per hour handled waste gas is 20L, is chlorine-containing volatile aromatic hydrocarbon with the chlorobenzene, has investigated water vapour content respectively to the 2%CuO-20%CeO among the embodiment 1
220%MnO among/H-ZSM-5 catalyst and the embodiment 3
2-10%CeO
2The influence of the complete catalytic combustion activity of/H-ZSM-5 catalyst the results are shown in Table 5.
Table 5 water vapour content is to the influence of the complete catalytic combustion activity of chlorobenzene
| Catalyst | Water concentration (vol%) | Chlorobenzene conversion ratio (%) | |||||||
| Reaction temperature (℃) | |||||||||
| 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | ||
| Embodiment 1 catalyst | 0 3 | 0 0 | 2.3 0 | 4.6 12.3 | 10.3 23.1 | 56.9 47.8 | 95.8 85.6 | 99.9 98.9 | ＞99.8 ＞99.8 |
| Embodiment 3 catalyst | 0 3 12 | 6.4 3.6 0.3 | 7.9 5.1 2.4 | 23.7 16.7 12.8 | 56.4 37.4 26.3 | 97.0 76.3 54.3 | ＞99.8 96.5 75.2 | 99 ＞99.8 99.2 | ＞99.8 ＞99.8 ＞99.8 |
The result shows that steam is to 2%CuO-20%CeO
2/ H-ZSM-5,20%MnO
2-10%CeO
2/ H-ZSM-5 activity of such catalysts has certain inhibitory action.But then be beneficial to the conversion of chlorobenzene when the further raising of vapour content.This point commercial Application that burning is eliminated for the chlorine-containing volatile arene is particularly important, because the waste gas of industrial chlorine-containing volatile arene contains a large amount of steam sometimes.
Claims (4)
1. one kind is used for easy-to-volatile chloroarene low-temperature catalytic burning method, it is characterized in that, in the presence of catalyst, employing is brought reactor into as the air of oxidant, make the completing combustion under the effect of catalyst of chlorine-containing volatile aromatic hydrocarbon, chlorine-containing volatile aromatic hydrocarbon is transformed into carbon dioxide, hydrogen chloride and chlorine.Completing combustion tail gas can adopt dilute alkaline soln to absorb back emptying such as (hydrogen chloride/chlorine sour gas);
Reaction pressure is 0.1～1Mpa, preferred 0.1～0.5Mpa, especially 0.1Mpa, and near normal pressure, temperature is 100～400 ℃, is preferably 150～450 ℃, especially 350 ℃;
Catalyst consumption, must be enough to make chlorine-containing volatile aromatic hydrocarbon existing under the situation at humid air, change into carbon dioxide and hydrogen chloride, generally speaking, the concentration of chlorine-containing volatile aromatic hydrocarbon is 0.05～5vol% in the waste gas of chlorine-containing volatile aromatic hydrocarbon, and every gram catalyst treatment exhausted air quantity is 10～30L per hour;
Said catalyst constitutes with molecular sieve carried rare earth oxide and transition metal oxide, and wherein molecular sieve is commercially available acidic molecular sieve, a kind of as in H-ZSM-5, Y type and the HBETA type molecular sieve, and its content is 70～90wt%; Rare earth oxide is one or several composition of lanthana, cerium oxide, neodymia, oxidation Gadolinium, and its content is 10～30wt%; Transition metal oxide is one or several composition of cupric oxide, iron oxide, oxidation alum, manganese oxide, cobalt oxide, tungsten oxide, and its content is 0～20wt%.
2. the described Preparation of catalysts method of claim 1, it is characterized in that: supported rare earth oxide and transition metal oxide adopt incipient impregnation method well known in the art on acidic molecular sieve, and the presoma that the presoma of rare earth oxide is selected from the nitrate of rare earth, transition metal oxide is selected from nitrate, oxalates, acetate, carbonate.
3. the described Preparation of catalysts method of claim 1 is characterized in that: the rare earth nitrades and the transition metal presoma of metering are mixed, are dissolved in a certain amount of deionized water, place 50 ℃ constant temperature water bath to stir 0.5h this solution; In this solution, add a certain amount of acidic molecular sieve (Si/Al=35) then, constantly stir, after liquid to be impregnated is all absorbed by molecular sieve, static, aging 12h, 100 ℃ of dry 24h in baking oven then, move in the roaster temperature programming in air atmosphere, 1 ℃ of per minute, be raised to 180 ℃, insulation 2h; Temperature programming again, 10 ℃ of per minutes are raised to 550 ℃ with temperature, during insulation 4h, promptly get described molecular sieve carried rare earth oxide of claim 1 and catalyst of transition metal oxide.
4. the low-temperature catalytic burning that is widely used in industrial waste gas, refuse, waste water easy-to-volatile chloroarene according to the described catalyst that is used for the elimination of easy-to-volatile chloroarene low-temperature catalytic burning of claim 1 is eliminated, especially the chloride arene pollutant of the effumability in the industrial waste gas.
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| CN109157977A (en) * | 2018-09-26 | 2019-01-08 | 中国科学院大学 | A kind of method and catalyst handling volatility chlorinated aromatic hydrocarbons pollutant |
| CN111229303A (en) * | 2020-03-13 | 2020-06-05 | 华东理工大学 | Composite catalyst for directly preparing high-value aromatic hydrocarbon from carbon dioxide, preparation method and application |
| CN111229303B (en) * | 2020-03-13 | 2022-11-11 | 华东理工大学 | Composite catalyst for directly preparing high-value aromatic hydrocarbon from carbon dioxide, preparation method and application |
| CN113333015A (en) * | 2021-04-21 | 2021-09-03 | 浙江理工大学 | Chlorine-containing organic waste gas catalytic combustion catalyst with high carbon dioxide selectivity, and preparation and application thereof |
| CN113828349A (en) * | 2021-10-22 | 2021-12-24 | 浙江理工大学 | Catalytic combustion catalyst containing chlorine volatile organic compounds, and preparation method and application thereof |
| CN114100621A (en) * | 2021-11-08 | 2022-03-01 | 荆楚理工学院 | Catalyst for catalytic oxidation treatment of explosive hydrogen-containing waste gas, preparation method and application thereof |
| CN115155580A (en) * | 2022-07-23 | 2022-10-11 | 重庆科技学院 | High-chlorine-resistance and thermal-aging-resistance catalyst for catalytic combustion of organic waste gas and preparation method thereof |
| CN115155580B (en) * | 2022-07-23 | 2023-09-12 | 重庆科技学院 | Catalyst with high chlorine resistance and thermal aging resistance for catalytic combustion of organic waste gas and preparation method thereof |
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