CN104549257A - Catalyst for treating organic small molecule wastewater and preparation method of catalyst - Google Patents
Catalyst for treating organic small molecule wastewater and preparation method of catalyst Download PDFInfo
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- CN104549257A CN104549257A CN201510017702.5A CN201510017702A CN104549257A CN 104549257 A CN104549257 A CN 104549257A CN 201510017702 A CN201510017702 A CN 201510017702A CN 104549257 A CN104549257 A CN 104549257A
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Abstract
The invention discloses a catalyst for treating organic small molecule wastewater. The catalyst comprises a carrier and a catalysis component loaded onto the carrier, wherein the carrier refers to a CexZr<1-x>O2 composite metallic oxide; x is equal to 1-0; the catalysis component refers to a precious metal Pt or Ru; and the amount of the catalysis component accounts for 0.1-1wt% of the total weight of the catalyst. The catalyst disclosed by the invention can degrade the organic small molecule wastewater under low temperature and low pressure and is high in catalytic activity; and moreover, the production cost is low, the operating cost is low, and the catalyst is applied to a catalytic wet oxidation technology in the industry.
Description
Technical field
The invention belongs to industrial waste water treatment, be specifically related to a kind of Catalysts and its preparation method processing organic molecule waste water.
Background technology
The waste water that industry produces often contains multiple high density, poisonous, dangerous organic substance, if do not processed the pollution that direct discharge can cause environment serious.Catalytic Wet Oxidation technology is more and more applied in recent years, because organism can be changed into carbonic acid gas and water by the method completely, so the application of this technology is considered to the most effectively process one of method for industrial waste water.Organic molecule waste water is intermediate product more common in sewage, such as formic acid, formaldehyde, methyl alcohol, often produces these small molecules when processing organism.At present, the research for organic molecule waste water is less, but the process of organic molecule is again a vital link in Industrial Wastewater Treatment, is also especially a difficult problem at lower concentration organic molecule of effectively must degrading.Therefore, develop the process organic molecule waste water catalyzer that cost is low, catalytic activity is good and there is huge industrial application value.
Summary of the invention
The object of the present invention is to provide a kind of catalyzer processing organic molecule waste water.
Another object of the present invention is to the preparation method of the catalyzer that above-mentioned process organic molecule waste water is provided.
Concrete technical scheme of the present invention is as follows:
Process a catalyzer for organic molecule waste water, comprise carrier and be carried on the catalyst component on carrier, carrier is Ce
xzr
1-xo
2complex metal oxides, x=1 ~ 0, catalyst component is precious metals pt or Ru, and the amount of catalyst component is 0.1 ~ 1wt% of described total catalyst weight.
A preparation method for the catalyzer of above-mentioned process organic molecule waste water, comprises the steps:
(1) take cerous nitrate and zirconium nitrate by the mol ratio of x:1 ~ x, add water and be mixed with cerous nitrate solution and zirconium nitrate solution respectively;
(2) by after ammoniacal liquor, potassium hydroxide and water mixed dissolution, obtained alkali lye, then be cooled to 0 ~ 10 DEG C, wherein the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 17, and the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 15;
(3) solution that step (1) is obtained is slowly instilled while stirring in the obtained alkali lye of 0 ~ 10 DEG C of step (2), then in 80 ~ 120 DEG C of insulation 5 ~ 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 100 DEG C of oven dry, then in air atmosphere 300 ~ 700 DEG C of roasting 2 ~ 5h, be cooled to room temperature, obtain described carrier;
(5) support dispersion obtained for step (4) is stirred 2 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 1 ~ 3h;
(6) in the material of step (5), precious metals pt or Ru presoma is added, and stir 6 ~ 12h, successively after filtration, after washing and the vacuum-drying of 50 ~ 150 DEG C, 300 ~ 700 DEG C of roasting 2 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water.
In a preferred embodiment of the invention, in described step (2), the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 15, and the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 12.
In a preferred embodiment of the invention, described step (3) is: slowly instilled by the solution that step (1) is obtained in the obtained alkali lye of 0 ~ 4 DEG C of step (2) while stirring, then in 100 ~ 120 DEG C of insulation 15 ~ 20min, and stir simultaneously;
In a preferred embodiment of the invention, described step (4) is: material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 70 DEG C of oven dry, then in air atmosphere 600 ~ 700 DEG C of roasting 4 ~ 5h, be cooled to room temperature, obtain described carrier.
In a preferred embodiment of the invention, described step (5) is: obtained for step (4) support dispersion is stirred 4 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 2 ~ 3h.
In a preferred embodiment of the invention, described step (6) is: in the material of step (5), add precious metals pt or Ru presoma, and stir 10 ~ 12h, successively after filtration, after washing and the vacuum-drying of 80 ~ 100 DEG C, 400 ~ 500 DEG C of roasting 4 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water.
The invention has the beneficial effects as follows:
1, catalyzer of the present invention can be degraded organic molecule waste water under low-temp low-pressure, and catalytic activity is high.
2, catalyzer of the present invention is applicable to organic molecule waste water, such as containing formic acid, formaldehyde, at least one waste water in methyl alcohol, less than 50 DEG C, total pressure is within below 1Mpa, reaction times 6h degrade chemical oxygen demand (COD) (COD) close to 100%.
3, catalyzer of the present invention is suitable for waste strength wide (50-5000mg/L is containing at least one sewage in formaldehyde, formic acid, methyl alcohol), even if chemical oxygen demand (COD) (COD) also can be degraded more than 95% by (COD<200ppm) in lower concentration situation.
4, the production cost of catalyzer of the present invention is low, operation cost is low, is applicable in the Catalytic Wet Oxidation technology in industry.
Embodiment
Below by way of embodiment, technical scheme of the present invention is further detailed and is described.
Embodiment 1:Ru/Ce
0zr
1o
2synthetic method
(1) by 3.2g Zr (NO
3)
45H
2o is dissolved in after in 150mL water and stirs 20min, then puts into constant pressure funnel;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) solution obtained for step (1) is instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
0zr
1o
2carrier;
(5) by 0.5g Ce obtained for step (4)
0zr
1o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 2.56mL RuCl is added
3xH
2the aqueous solution (1g/500mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Ru/Ce
0zr
1o
2catalyzer.
Take the Ce of the above-mentioned preparation of 40mg
0zr
1o
2carrier or Ru/Ce
0zr
1o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 200ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ce as shown in Table 1 and Table 2
0zr
1o
2degradable 12%COD, and Ru/Ce
0zr
1o
2cOD degradation rate reach 82%.
Embodiment 2:Ru/Ce
0.25zr
0.75o
2synthetic method
(1) by 2.4g Zr (NO
3)
45H
2o and 0.81g Ce (NO
3)
36H
2o is dissolved in respectively after in 150mL water and stirs 20min, then puts into constant pressure funnel respectively;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) two kinds of obtained for step (1) solution are instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
0.25zr
0.75o
2carrier;
(5) by 0.5g Ce obtained for step (4)
0.25zr
0.75o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 2.56mL RuCl is added
3xH
2the aqueous solution (1g/500mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Ru/Ce
0.25zr
0.75o
2catalyzer.
Take the Ce of the above-mentioned preparation of 40mg
0.25zr
0.75o
2carrier or Ru/Ce
0.25zr
0.75o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 200ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ce as shown in Table 1 and Table 2
0.25zr
0.75o
2degradable 16%COD, and Ru/Ce
0.25zr
0.75o
2cOD degradation rate be 98%.
Embodiment 3:Ru/Ce
0.5zr
0.5o
2synthetic method
(1) by 1.6g Zr (NO
3)
45H
2o and 1.62g Ce (NO
3)
36H
2o is dissolved in respectively after in 150mL water and stirs 20min, then puts into constant pressure funnel respectively;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) two kinds of obtained for step (1) solution are instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
0.5zr
0.5o
2carrier;
(5) by 0.5g Ce obtained for step (4)
0.5zr
0.5o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 2.56mL RuCl is added
3xH
2the aqueous solution (1g/500mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Ru/Ce
0.5zr
0.5o
2catalyzer.
Take the Ce of the above-mentioned preparation of 40mg
0.5zr
0.5o
2carrier or Ru/Ce
0.5zr
0.5o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 200ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ce as shown in Table 1 and Table 2
0.5zr
0.5o
2degradable 23%COD, and Ru/Ce
0.5zr
0.5o
2cOD degradation rate be 87%.
Embodiment 4:Ru/Ce
0.75zr
0.25o
2synthetic method
(1) by 0.8g Zr (NO
3)
45H
2o and 2.43g Ce (NO
3)
36H
2o is dissolved in respectively after in 150mL water and stirs 20min, then puts into constant pressure funnel respectively;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) two kinds of obtained for step (1) solution are instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
0.75zr
0.25o
2carrier;
(5) by 0.5g Ce obtained for step (4)
0.75zr
0.25o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 2.56mL RuCl is added
3xH
2the aqueous solution (1g/500mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Ru/Ce
0.75zr
0.25o
2catalyzer.
Take the Ce of the above-mentioned preparation of 40mg
0.75zr
0.25o
2carrier or Ru/Ce
0.75zr
0.25o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 200ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ce as shown in Table 1 and Table 2
0.75zr
0.25o
2degradable 13%COD, and Ru/Ce
0.75zr
0.25o
2cOD degradation rate be 82%.
Embodiment 5:Ru/Ce
1zr
0o
2synthetic method
(1) by 3.24g Ce (NO
3)
36H
2o is dissolved in after in 150mL water and stirs 20min, then puts into constant pressure funnel;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) solution obtained for step (1) is instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
1zr
0o
2carrier;
(5) by 0.5g Ce obtained for step (4)
1zr
0o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 2.56mL RuCl is added
3xH
2the aqueous solution (1g/500mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Ru/Ce
1zr
0o
2catalyzer.
Take the Ce of the above-mentioned preparation of 40mg
1zr
0o
2carrier or Ru/Ce
1zr
0o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 1500ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ce as shown in Table 1 and Table 2
1zr
0o
2degradable 13%COD, and Ru/Ce
1zr
0o
2cOD degradation rate close to 78%.
Embodiment 6:Pt/Ce
0.25zr
0.75o
2synthetic method
(1) by 2.4g Zr (NO
3)
45H
2o and 0.81g Ce (NO
3)
36H
2o is dissolved in respectively after in 150mL water and stirs 20min, then puts into constant pressure funnel respectively;
(2) by 4mL ammoniacal liquor NH
3h
2after O, 4g potassium hydroxide and water mixed dissolution, be settled to 100mL, obtained alkali lye, then it is cooled to 0 DEG C with ice bath;
(3) two kinds of obtained for step (1) solution are instilled in the obtained alkali lye of 0 DEG C of step (2) with the speed of 1/s while stirring, then in 100 DEG C of insulation 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 DEG C dry 12h, then in air atmosphere 600 DEG C of roasting 4h, be cooled to room temperature, obtain Ce
0.25zr
0.75o
2carrier;
(5) by 0.5g Ce obtained for step (4)
0.25zr
0.75o
2support dispersion is to ammoniacal liquor (3mL NH
3h
2o joins in 100mL water, stirs 20min to complete preparation) in and stir 4h, and then add the hydrazine hydrate aqueous solution of 100mL 3% volume ratio, stir 3h;
(6) in the material of step (5), 1.58mL H is added
2ptCl
66H
2the aqueous solution (1g/250mL) of O, and stir 12h, successively after filtration, after the vacuum-drying of washing and 80 DEG C, then in hydrogen atmosphere 400 DEG C of roasting 5h, be cooled to room temperature, obtain Pt/Ce
0.25zr
0.75o
2catalyzer.
Take the Pt/Ce of the above-mentioned preparation of 40mg
0.25zr
0.75o
2catalyzer adds 20mL containing in formic acid, formaldehyde, formaldehyde waste water, and COD is 1500ppm, and reaction pressure is 0.5Mpa oxygen, and temperature of reaction is 40 DEG C.After reaction 6h, Ru/Ce as shown in table 3
0.25zr
0.75o
2catalyzer compares Pt/Ce
0.25zr
0.75o
2cOD degradation rate high by 10%.
The table 1 related in above-described embodiment, 2 and 3 specific as follows:
Each Ce in table 1 embodiment 1 to 4
xzr
1-xo
2carrier catalysis wet oxidation is containing the reactive behavior of formic acid, formaldehyde, methanol waste water
Each Ru/Ce in table 2 embodiment 1 to 4
xzr
1-xo
2carrier catalysis wet oxidation is containing the reactive behavior of formic acid, formaldehyde, methanol waste water
The catalyst wet oxidation being active centre with Ru or Pt in table 3 embodiment 2 and 5 contains the reactive behavior of formic acid, formaldehyde, methanol waste water
Those skilled in the art are known: when technical parameter of the present invention changes in following scope, still can obtain similar to the aforementioned embodiment or identical technique effect:
A preparation method for the catalyzer of above-mentioned process organic molecule waste water, comprises the steps:
(1) take cerous nitrate and zirconium nitrate by the mol ratio of x:1 ~ x, add water and be mixed with cerous nitrate solution and zirconium nitrate solution respectively;
(2) by after ammoniacal liquor, potassium hydroxide and water mixed dissolution, obtained alkali lye, be cooled to 0 ~ 10 DEG C again, wherein the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 17, the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 15, preferably, the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 15, and the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 12;
(3) solution that step (1) is obtained is slowly instilled while stirring in the obtained alkali lye of 0 ~ 10 DEG C of step (2), then in 80 ~ 120 DEG C of insulation 5 ~ 20min, and stir simultaneously, preferably, the solution that step (1) is obtained is slowly instilled while stirring in the obtained alkali lye of 0 ~ 4 DEG C of step (2), then in 100 ~ 120 DEG C of insulation 15 ~ 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 100 DEG C of oven dry, 300 ~ 700 DEG C of roasting 2 ~ 5h in air atmosphere, are cooled to room temperature, obtain described carrier again, preferably, material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 70 DEG C of oven dry, then in air atmosphere 600 ~ 700 DEG C of roasting 4 ~ 5h, be cooled to room temperature, obtain described carrier;
(5) obtained for step (4) support dispersion is stirred 2 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 1 ~ 3h, preferably, obtained for step (4) support dispersion is stirred 4 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 2 ~ 3h;
(6) in the material of step (5), precious metals pt or Ru presoma is added, and stir 6 ~ 12h, successively after filtration, after washing and the vacuum-drying of 50 ~ 150 DEG C, 300 ~ 700 DEG C of roasting 2 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water, preferably, precious metals pt or Ru presoma is added in the material of step (5), and stir 10 ~ 12h, successively after filtration, after washing and the vacuum-drying of 80 ~ 100 DEG C, 400 ~ 500 DEG C of roasting 4 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water.
The above, be only preferred embodiment of the present invention, therefore can not limit scope of the invention process according to this, the equivalence change namely done according to the scope of the claims of the present invention and description with modify, all should still belong in scope that the present invention contains.
Claims (7)
1. process a catalyzer for organic molecule waste water, it is characterized in that: comprise carrier and be carried on the catalyst component on carrier, carrier is Ce
xzr
1-xo
2complex metal oxides, x=1 ~ 0, catalyst component is precious metals pt or Ru, and the amount of catalyst component is 0.1 ~ 1wt% of described total catalyst weight.
2. a preparation method for the catalyzer of process organic molecule waste water according to claim 1, is characterized in that: comprise the steps:
(1) take cerous nitrate and zirconium nitrate by the mol ratio of x:1 ~ x, add water and be mixed with cerous nitrate solution and zirconium nitrate solution respectively;
(2) by after ammoniacal liquor, potassium hydroxide and water mixed dissolution, obtained alkali lye, then be cooled to 0 ~ 10 DEG C, wherein the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 17, and the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 15;
(3) solution that step (1) is obtained is slowly instilled while stirring in the obtained alkali lye of 0 ~ 10 DEG C of step (2), then in 80 ~ 120 DEG C of insulation 5 ~ 20min, and stir simultaneously;
(4) material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 100 DEG C of oven dry, then in air atmosphere 300 ~ 700 DEG C of roasting 2 ~ 5h, be cooled to room temperature, obtain described carrier;
(5) support dispersion obtained for step (4) is stirred 2 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 1 ~ 3h;
(6) in the material of step (5), precious metals pt or Ru presoma is added, and stir 6 ~ 12h, successively after filtration, after washing and the vacuum-drying of 50 ~ 150 DEG C, 300 ~ 700 DEG C of roasting 2 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water.
3. preparation method as claimed in claim 2, is characterized in that: in described step (2), the mol ratio of ammoniacal liquor and described carrier is 1:1 ~ 15, and the mol ratio of potassium hydroxide and described carrier is 1:1 ~ 12.
4. preparation method as claimed in claim 2, it is characterized in that: described step (3) is: the solution that step (1) is obtained is slowly instilled while stirring in the obtained alkali lye of 0 ~ 4 DEG C of step (2), then in 100 ~ 120 DEG C of insulation 15 ~ 20min, and stir simultaneously.
5. preparation method as claimed in claim 2, it is characterized in that: described step (4) is: material prepared by step (3) after filtration with deionized water wash after, in 60 ~ 70 DEG C of oven dry, 600 ~ 700 DEG C of roasting 4 ~ 5h in air atmosphere again, be cooled to room temperature, obtain described carrier.
6. preparation method as claimed in claim 2, it is characterized in that: described step (5) is: obtained for step (4) support dispersion is stirred 4 ~ 5h in 0.1mM ~ 0.5mM ammoniacal liquor, and then add the hydrazine hydrate aqueous solution of 0.5 ~ 5% volume ratio, stir 2 ~ 3h.
7. preparation method as claimed in claim 2, it is characterized in that: described step (6) is: in the material of step (5), add precious metals pt or Ru presoma, and stir 10 ~ 12h, successively after filtration, after washing and the vacuum-drying of 80 ~ 100 DEG C, 400 ~ 500 DEG C of roasting 4 ~ 5h in hydrogen atmosphere again, be cooled to room temperature, obtain the catalyzer of described process organic molecule waste water.
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| CN105126871A (en) * | 2015-09-02 | 2015-12-09 | 厦门大学 | Waste water catalyst for disposing small organic molecules and preparing method of waste water catalyst |
| CN110918094A (en) * | 2019-11-13 | 2020-03-27 | 中国五环工程有限公司 | Halogenated volatile organic compound catalytic combustion powder catalyst, preparation method thereof and preparation method of honeycomb ceramic monolithic catalyst |
| CN111514899A (en) * | 2020-05-11 | 2020-08-11 | 云南大学 | Catalyst for treating organic wastewater and preparation method thereof |
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