CN106268791A - A kind of preparation method of bimetallic catalyst - Google Patents
A kind of preparation method of bimetallic catalyst Download PDFInfo
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- CN106268791A CN106268791A CN201610875598.8A CN201610875598A CN106268791A CN 106268791 A CN106268791 A CN 106268791A CN 201610875598 A CN201610875598 A CN 201610875598A CN 106268791 A CN106268791 A CN 106268791A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention discloses the preparation method of a kind of bimetallic catalyst, first the presoma of Metal Palladium Pd and silver Ag is dissolved in solvent and is prepared as certain density aqueous solution, and in prepared solution, add certain dispersant；Carrier is added in above-mentioned solution, and carries out agitating heating until being completely dried；Dried sample is carried out high-temperature oxydation, then selects different medium to obtain described bimetallic catalyst after carrying out repeatedly reduction treatment.Catalyst prepared by the method is possible not only to, by formaldehyde room temperature catalytic degradation, also to be had the active component that can play bactericidal action, and effectively reduces the cost of catalyst.
Description
Technical field
The present invention relates to catalysis material technical field, particularly relate to the preparation method of a kind of bimetallic catalyst.
Background technology
Indoor air pollutants is of a great variety at present, and wherein formaldehyde source is wide, and the release phase is long, and exceeding standard rate is high, and harm is big, state
Border DKFZ (IARC) is classified as one of human carcinogen, and formaldehyde, as indoor topmost pollutant, has drawn
Play the highest attention of increasing media and the masses；Antibacterial is also one of major pollutants of room air simultaneously, and
Bringing very important impact to our daily life and health, the problem existed for indoor pollution, indoor air-purifier becomes
The major measure selected for masses.
Indoor air-purifier in prior art is removed formaldehyde and is mainly used active carbon adsorption, plasma method and urging
Change oxidizing process.But there is certain shortcoming in these methods, such as: the adsorption capacity of activated carbon and the problem of replacing, filter course
Replacement cycle and the problem of Expected Results, and the problem that plasma produces the secondary pollutions such as ozone.It addition, existing air
Depurator uses catalytic degradation formaldehyde technology mainly to use platinum catalyst, there is the problem that the Costco Wholesale of platinum is higher.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of bimetallic catalyst, catalyst prepared by the method not only may be used
With by formaldehyde room temperature catalytic degradation, also there is the active component that can play bactericidal action, and effectively reduce the cost of catalyst.
A kind of preparation method of bimetallic catalyst, described method includes:
The presoma of Metal Palladium Pd and silver Ag is dissolved in solvent and is prepared as certain density aqueous solution, and prepared
Solution in add certain dispersant；
Carrier is added in above-mentioned solution, and carries out agitating heating until being completely dried；
Dried sample is carried out high-temperature oxydation, then it is described double to select different medium to obtain after carrying out repeatedly reduction treatment
Metallic catalyst.
The presoma of described Metal Palladium Pd is specially Palladous nitrate. or Palladous chloride.；
The presoma of described argent Ag is specially silver nitrate or nitric acid Asia silver；
The dispersant used is specially fatty acid, aliphatic amide type or esters.
Selected different medium is specially CH4、CO、H2、N2Or O2。
The main composition elemental constituent of described bimetallic catalyst is Pd, Ag, Al；
Wherein, PdAg accounts for the weight ratio of described bimetallic catalyst is 0.1～10%；And the weight ratio of Pd Yu Ag is 1.0
～10%.
Described PdAg accounts for the weight ratio of described bimetallic catalyst and is specially 1%.
The weight ratio of described Pd Yu Ag is 2～5% further.
Described carrier elects conventional commercialization module carrier, specially Al as2O3And SiO2。
As seen from the above technical solution provided by the invention, the catalyst that prepared by said method is possible not only to formaldehyde
Room temperature catalytic degradation, also has the active component that can play bactericidal action, and effectively reduces the cost of catalyst.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill in field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention provided bimetallic catalyst preparation method；
Fig. 2 show the effect schematic diagram of the catalyst oxidation of formaldehyde prepared by the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Inventive embodiment, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into protection scope of the present invention.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail, is illustrated in figure 1 the present invention and implements
The schematic flow sheet of example provided bimetallic catalyst preparation method, described method includes:
Step 11: the presoma of Metal Palladium Pd and silver Ag is dissolved in solvent and is prepared as certain density aqueous solution, and
Certain dispersant is added in prepared solution；
In this step, the presoma of Metal Palladium Pd is specially Palladous nitrate. or Palladous chloride., and the presoma of argent Ag is specially
Silver nitrate or nitric acid Asia silver；
The dispersant used is specially fatty acid, aliphatic amide type or esters, such as Polyethylene Glycol etc.；
Step 12: carrier is added in above-mentioned solution, and carry out agitating heating until being completely dried；
In this step, above-mentioned carrier can elect conventional commercialization module carrier, specially Al as2O3And SiO2。
Step 13: dried sample is carried out high-temperature oxydation, then selects different medium to obtain after carrying out repeatedly reduction treatment
To described bimetallic catalyst.
In this step, selected different medium is specially CH4、CO、H2、N2Or O2。
Further, the main composition elemental constituent of above-mentioned bimetallic catalyst is Pd, Ag, Al；
Wherein, PdAg accounts for the weight ratio of described bimetallic catalyst is 0.1～10%；And the weight ratio of Pd Yu Ag is 1.0
～10%.
In implementing, described PdAg accounts for the weight ratio of described bimetallic catalyst and is specifically as follows 1%.
The weight ratio of described Pd Yu Ag more preferably 2～5%.
As a example by catalyst oxidation of formaldehyde described in the embodiment of the present invention, it is illustrated in figure 2 the embodiment of the present invention made
The effect schematic diagram of standby catalyst oxidation of formaldehyde, as shown in Figure 2: the PdAg ratio of this catalyst, can be 20 when for 2
～the catalysis conversion rate of oxidation of PARA FORMALDEHYDE PRILLS(91,95) reaches 100% in 40 DEG C of temperature ranges, will the complete catalytic degradation of formaldehyde；Simultaneously to killing
Bacterium effect is verified, finds that this catalyst can reach 90% to colibacillary eradicative rate.
In sum, catalyst prepared by method described in the embodiment of the present invention is possible not only to formaldehyde room temperature catalytic degradation,
Also there is the active component that can play bactericidal action, and two kinds of active components can also farthest be mutually promoted and be processed effect
Really；The combination of two kinds of metals simultaneously can to a certain degree reduce catalyst cost.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be as the criterion.
Claims (7)
1. the preparation method of a bimetallic catalyst, it is characterised in that described method includes:
The presoma of Metal Palladium Pd and silver Ag is dissolved in solvent and is prepared as certain density aqueous solution, and prepared molten
Liquid adds certain dispersant；
Carrier is added in above-mentioned solution, and carries out agitating heating until being completely dried；
Dried sample is carried out high-temperature oxydation, then selects different medium to obtain described bimetallic after carrying out repeatedly reduction treatment
Catalyst.
The preparation method of bimetallic catalyst the most according to claim 1, it is characterised in that
The presoma of described Metal Palladium Pd is specially Palladous nitrate. or Palladous chloride.；
The presoma of described argent Ag is specially silver nitrate or nitric acid Asia silver；
The dispersant used is specially fatty acid, aliphatic amide type or esters.
The preparation method of bimetallic catalyst the most according to claim 1, it is characterised in that
Selected different medium is specially CH4、CO、H2、N2Or O2。
The preparation method of bimetallic catalyst the most according to claim 1, it is characterised in that
The main composition elemental constituent of described bimetallic catalyst is Pd, Ag, Al；
Wherein, PdAg accounts for the weight ratio of described bimetallic catalyst is 0.1～10%；And the weight ratio of Pd Yu Ag be 1.0～
10%.
The preparation method of bimetallic catalyst the most according to claim 4, it is characterised in that
Described PdAg accounts for the weight ratio of described bimetallic catalyst and is specially 1%.
The preparation method of bimetallic catalyst the most according to claim 4, it is characterised in that
The weight ratio of described Pd Yu Ag is 2～5% further.
The preparation method of bimetallic catalyst the most according to claim 1, it is characterised in that
Described carrier elects conventional commercialization module carrier, specially Al as2O3And SiO2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610875598.8A CN106268791A (en) | 2016-09-30 | 2016-09-30 | A kind of preparation method of bimetallic catalyst |
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| CN201610875598.8A CN106268791A (en) | 2016-09-30 | 2016-09-30 | A kind of preparation method of bimetallic catalyst |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380182A (en) * | 2018-03-28 | 2018-08-10 | 广东美的环境电器制造有限公司 | Phenolic resin-based activated carbon and its preparation method and application |
| CN112007635A (en) * | 2020-08-17 | 2020-12-01 | 钛纶新材料(昆山)有限公司 | Preparation method of catalyst for degrading formaldehyde at normal temperature |
| CN112915999A (en) * | 2021-01-26 | 2021-06-08 | 北京石油化工学院 | Catalyst for degrading benzene series and ethyl acetate and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5585083A (en) * | 1995-03-30 | 1996-12-17 | The United States As Represented By The Administrator Of The National Aeronautics And Space Administration | Catalytic process for formaldehyde oxidation |
| CN1795970A (en) * | 2004-12-28 | 2006-07-05 | 中国科学院生态环境研究中心 | High performance catalyst for catalyzing formaldehyde to complete oxidation under room temperature temperature |
| CN104226306A (en) * | 2014-10-14 | 2014-12-24 | 北京恒泰实达科技股份有限公司 | Catalyst for oxidizing and eliminating formaldehyde at room temperature and preparation method thereof |
| CN104646029A (en) * | 2015-02-24 | 2015-05-27 | 中山大学惠州研究院 | Metal alloy catalyst for formaldehyde purification and preparation method thereof |
-
2016
- 2016-09-30 CN CN201610875598.8A patent/CN106268791A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5585083A (en) * | 1995-03-30 | 1996-12-17 | The United States As Represented By The Administrator Of The National Aeronautics And Space Administration | Catalytic process for formaldehyde oxidation |
| CN1795970A (en) * | 2004-12-28 | 2006-07-05 | 中国科学院生态环境研究中心 | High performance catalyst for catalyzing formaldehyde to complete oxidation under room temperature temperature |
| CN104226306A (en) * | 2014-10-14 | 2014-12-24 | 北京恒泰实达科技股份有限公司 | Catalyst for oxidizing and eliminating formaldehyde at room temperature and preparation method thereof |
| CN104646029A (en) * | 2015-02-24 | 2015-05-27 | 中山大学惠州研究院 | Metal alloy catalyst for formaldehyde purification and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380182A (en) * | 2018-03-28 | 2018-08-10 | 广东美的环境电器制造有限公司 | Phenolic resin-based activated carbon and its preparation method and application |
| CN112007635A (en) * | 2020-08-17 | 2020-12-01 | 钛纶新材料(昆山)有限公司 | Preparation method of catalyst for degrading formaldehyde at normal temperature |
| CN112915999A (en) * | 2021-01-26 | 2021-06-08 | 北京石油化工学院 | Catalyst for degrading benzene series and ethyl acetate and preparation method and application thereof |
| CN112915999B (en) * | 2021-01-26 | 2023-06-16 | 北京石油化工学院 | Catalyst for degrading benzene series and ethyl acetate, and preparation method and application thereof |
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