CN105664928A - Preparation method of platinum-loading citrus grandis peel activated carbon catalyst for room-temperature degradation of formaldehyde in air - Google Patents
Preparation method of platinum-loading citrus grandis peel activated carbon catalyst for room-temperature degradation of formaldehyde in air Download PDFInfo
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- CN105664928A CN105664928A CN201610160671.3A CN201610160671A CN105664928A CN 105664928 A CN105664928 A CN 105664928A CN 201610160671 A CN201610160671 A CN 201610160671A CN 105664928 A CN105664928 A CN 105664928A
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- 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
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
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- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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Abstract
The invention relates to a preparation method of a platinum-loading citrus grandis peel activated carbon catalyst for room-temperature degradation of formaldehyde in air. The preparation method includes steps: step 1, adding a certain quantity of dried and ground citrus grandis peels into deionized water according to a mass ratio of 10%, adding a chloroplatinic acid solution with the concentration being 10%, and magnetically stirring for 2h, wherein the mass ratio of metal platinum to the citrus grandis peels is 0.3%-1.2%; step 2, drying suspension liquid obtained at the step 1 for 12h in an environment with the temperature of 70 DEG C, and evaporating to dry the solution; step 3, putting powder obtained at the step 2 in a nitrogen atmosphere, and roasting for 2h at the temperature of 450-600 DEG C.
Description
Technical field
The preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of room temperature degraded formaldehyde in air, belongs to environmental contaminants purification, environmental conservation and catalyst new material technology field.
Background technology
Formaldehyde is a kind of common indoor air pollutants, and health of people is had very big harm by it. Along with improving constantly of modern life level, people increasingly pursue house decoration. But, sheet material, coating or the binding agent that fitting-out work uses in a large number, it is possible at the substantial amounts of formaldehyde gas of indoor release, thus threatening people healthy. How effectively to remove the formaldehyde in room air, in recent years attention always. Supported nano-gold belongs to the catalyst of platinum, because of Pt therein in conjunction with synergistic carriers can oxygen molecule in effective activation air, and then thoroughly oxidize the formaldehyde into as carbon dioxide and water. Such as, Pt is loaded on active carbon powder or titanium dioxide nanoparticle, all can oxidize the formaldehyde into as carbon dioxide and water well. But, the preparation of the catalyst of the room temperature degraded formaldehyde in air of common supporting Pt generally requires and first prepares activated carbon or titania support, then again through reducing process, Pt is loaded on these carriers, drying or obtain required catalyst after calcination process. These catalysis often preparation technology is extremely complex, relatively costly. Therefore, find the catalyst method of the Supported Pt Nanoparticles of relatively simple preparation room temperature drop solution formaldehyde in air, then very necessary and there is important practical be worth.
Based on considerations above, the present invention with originate wide, usually used as the pomelo shell of garbage for primary raw material, the method that have studied the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of preparation room temperature drop solution formaldehyde in air, it is achieved that the reduction of activated carbon preparation and platinum completes with load one step. It has, and preparation technology is simple, raw material sources are wide, cost is low, can utilize garbage, and obtains the advantages such as catalyst room temperature oxidation Decomposition formaldehyde performance is good.
Summary of the invention
The technical problem to be solved is to degrade the deficiency and the method that provides the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of preparation room temperature drop solution formaldehyde in air that the catalyst preparation technology of Supported Pt Nanoparticles of formaldehyde in air exists for such as above-mentioned existing room temperature, it utilizes discarded pomelo shell to be raw material, have that preparation technology is simple, raw material sources are wide, cost is low, and obtain the advantages such as catalyst oxidation Decomposition formaldehyde performance is good.
The preparation method that the technical scheme is that the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of room temperature degraded formaldehyde in air, other comprises the following steps:
Step 1: a certain amount of drying levigate pomelo shell are added in deionized water according to the ratio that mass ratio is 10%;It is subsequently adding the platinum acid chloride solution that concentration is 10% so that the mass ratio of metal platinum and pomelo shell is 0.3% to 1.2%; Last magnetic agitation 2h;
Step 2: being placed on by the suspension that described step 1 obtains in temperature is dry 12 hours in 70 DEG C of environment, is evaporated solution;
Step 3: the powder described step 2 obtained is placed in a nitrogen atmosphere, and being placed in temperature is roasting 2h in 450 DEG C to 600 DEG C environment.
Preferably, in described step 1, metal platinum and pomelo shell mass ratio are 1.0%.
Preferably, in described step 3, ambient temperature is 550 DEG C.
Preferably, pomelo shell described in described step 1 is levigate after drying 12 hours in 70 DEG C of environment.
The invention has the beneficial effects as follows compared with prior art, the invention has the beneficial effects as follows:
1) reduction achieving activated carbon preparation and platinum completes with load one step.
2) utilizing discarded pomelo shell is raw material, has that preparation technology is simple, raw material sources wide, low cost and other advantages.
3) advantages such as catalyst room temperature oxidation Decomposition formaldehyde performance is good are obtained. Add for this area and a kind of prepare catalysis material simple, cost Oxidation at room temperature decomposing formaldehyde low, highly active.
Accompanying drawing explanation
Pt chemical state in the catalyst that the embodiment 3 that accompanying drawing 1 measures for utilizing x-ray photoelectron spectroscopy obtains.
The catalyst that accompanying drawing 2 obtains for embodiment 3 is degraded in room temperature the effect of formaldehyde in air.
Detailed description of the invention
Below in conjunction with accompanying drawing, principles of the invention and feature being described, example is served only for explaining the present invention, is not intended to limit the scope of the present invention.
The present invention announces a kind of room temperature degradation of formaldehyde experiment, and the catalysis activity of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles prepared by the present invention is to be estimated by the formaldehyde in room temperature catalytic degradation air. Experimentation is as follows: by the sealing culture dish containing prepared catalyst 0.15g, being placed in volume is in 600mL closed reactor, it is then injected into the formaldehyde of about 0.3 μ L, after reaching balance by instrument detection concentration of formaldehyde, open the lid of culture dish, carry out room temperature formaldehyde catalytic degradation reaction, simultaneously the change of on-line checking concentration of formaldehyde and gas concentration lwevel, according to the difference before and after concentration of formaldehyde catalytic degradation, calculate Degradation Formaldehyde rate.
The preparation method that the present invention announces several pomelo shell activated-carbon catalyst, referring specifically to below embodiment:
Embodiment 1:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 0.3% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 550 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 53%.
Embodiment 2:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 0.7% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 550 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 60%.
Embodiment 3:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 1.0% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 550 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde. Accompanying drawing 1 proves that Pt therein is 0 valency Pt metal.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 90%. Accompanying drawing 2 is the degradation curve in time of formaldehyde. Catalyst prepared by the platinum acid chloride solution that ratio addition concentration is 10% of 1.0% is described at ambient temperature, there is the activity of best catalytic degradation formaldehyde.
Embodiment 4:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 1.2% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 550 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 36%.
Embodiment 5-1:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 1.0% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 450 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 47%.
Embodiment 5-2:
A kind of preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degraded formaldehyde in air, it comprises the following steps:
1) weigh 10g to dry and levigate pomelo shell powder, add in 100mL deionized water, then according to it is the platinum acid chloride solution of 10% that the ratio that metal platinum and pomelo shell mass ratio are 1.0% adds concentration, magnetic agitation 2h;
2) suspension obtained is dried 12 hours in 70 DEG C, be evaporated solution;
3) obtain powder and in a nitrogen atmosphere, in 600 DEG C of roasting 2h, namely obtain the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of room temperature degradation of formaldehyde.
Taking the pomelo shell activated-carbon catalyst 0.15g of Supported Pt Nanoparticles synthesized by this example, method carries out room temperature degradation of formaldehyde experiment as described above, and after 400 minutes, the degradation rate of formaldehyde is about 70%.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (4)
1. the preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a room temperature degraded formaldehyde in air, it is characterised in that it comprises the following steps:
Step 1: a certain amount of drying levigate pomelo shell are added in deionized water according to the ratio that mass ratio is 10%; It is subsequently adding the platinum acid chloride solution that concentration is 10% so that the mass ratio of metal platinum and pomelo shell is 0.3% to 1.2%; Last magnetic agitation 2h;
Step 2: being placed on by the suspension that described step 1 obtains in temperature is dry 12 hours in 70 DEG C of environment, is evaporated solution;
Step 3: the powder described step 2 obtained is placed in a nitrogen atmosphere, and being placed in temperature is roasting 2h in 450 DEG C to 600 DEG C environment.
2. the preparation method of pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of room temperature degraded formaldehyde in air according to claim 1, it is characterised in that in described step 1, metal platinum and pomelo shell mass ratio are 1.0%.
3. the preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of room temperature according to claim 1 or claim 2 degraded formaldehyde in air, it is characterised in that in described step 3, the ambient temperature of roasting is 550 DEG C.
4. the preparation method of the pomelo shell activated-carbon catalyst of the Supported Pt Nanoparticles of a kind of room temperature degraded formaldehyde in air according to any one of claims 1 to 3, it is characterised in that pomelo shell described in described step 1 is levigate after drying 12 hours in 70 DEG C of environment.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185927A (en) * | 2016-07-15 | 2016-12-07 | 宋玉琴 | The preparation method of the wood activated charcoal containing cerium |
| CN106185925A (en) * | 2016-07-15 | 2016-12-07 | 宋玉琴 | The preparation method of the cocoanut active charcoal containing rare earth |
| CN106219544A (en) * | 2016-07-15 | 2016-12-14 | 宋玉琴 | The preparation method of the wood activated charcoal containing lanthanum |
| CN106345457A (en) * | 2016-08-23 | 2017-01-25 | 黄云鸿 | Preparation method of activated carbon catalyst for degrading formaldehyde in air at room temperature |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185927A (en) * | 2016-07-15 | 2016-12-07 | 宋玉琴 | The preparation method of the wood activated charcoal containing cerium |
| CN106185925A (en) * | 2016-07-15 | 2016-12-07 | 宋玉琴 | The preparation method of the cocoanut active charcoal containing rare earth |
| CN106219544A (en) * | 2016-07-15 | 2016-12-14 | 宋玉琴 | The preparation method of the wood activated charcoal containing lanthanum |
| CN106185925B (en) * | 2016-07-15 | 2018-09-14 | 宋玉琴 | The preparation method of cocoanut active charcoal containing rare earth |
| CN106185927B (en) * | 2016-07-15 | 2018-09-14 | 宋玉琴 | The preparation method of wood activated charcoal containing cerium |
| CN106219544B (en) * | 2016-07-15 | 2018-09-28 | 宋玉琴 | The preparation method of wood activated charcoal containing lanthanum |
| CN106345457A (en) * | 2016-08-23 | 2017-01-25 | 黄云鸿 | Preparation method of activated carbon catalyst for degrading formaldehyde in air at room temperature |
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