CN101288847A - Attapulgite clay loaded copper oxide catalyst and its application in carbon monoxide oxidation - Google Patents
Attapulgite clay loaded copper oxide catalyst and its application in carbon monoxide oxidation Download PDFInfo
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- CN101288847A CN101288847A CNA2008100535595A CN200810053559A CN101288847A CN 101288847 A CN101288847 A CN 101288847A CN A2008100535595 A CNA2008100535595 A CN A2008100535595A CN 200810053559 A CN200810053559 A CN 200810053559A CN 101288847 A CN101288847 A CN 101288847A
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- catalyst
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- attapulgite clay
- copper oxide
- cuo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a preparation method of a natural attapulgite clay loading cupric oxide nanometer catalyst, which is applied for catalyzing CO for low-temperature oxidation. A deposition-settlement method is adopted to prepare the nanometer catalyst with high ratio surface area by loading the cupric oxide nanometer particles on the natural attapulgite clay carrier. In the preparation process, the loading quantity of the cupric oxide is easily controlled, the operation is simple and the raw material is easy to gain. The prepared catalyst has high activation performance of catalyzing the CO low-temperature oxidation and has greater industrial application significance.
Description
Technical field
The present invention relates to a kind of natural attapulgite clay loaded copper oxide catalyst and preparation method thereof, and be applied to the catalyzing carbon monoxide oxidation, belong to the solid catalytic material field.
Background technology
As one of important environmental contaminants, the existence of carbon monoxide has a strong impact on the healthy of the mankind, and the elimination of carbon monoxide is for environment and industrial production, falling aspects such as evil, safety guarantee as gas purification, tobacco has very important meaning, and catalytic oxidation is a kind of simple and effective way.Though traditional noble metal catalyst has excellent catalysis CO low-temperature oxidation activity,, limited its extensive use in industry because of it costs an arm and a leg, occurring in nature content is few and reason such as sulfur poisoning easily takes place.CuO has very high catalytic activity as the catalyst activity component in catalysis CO low-temperature oxidation, so it becomes the focus of researcher research in recent years.
Attapulgite (Attapulgite) claims palygorskite (Palygorskite) again, Concave-convex clay rod mainly is distributed in states such as China, the U.S., Spain, France, Russia, Australia, Britain, Brazil, Germany, Nepal and South Africa in the world, and China is the country of Concave-convex clay rod reserves maximum in the world.From 1976 the Luhe little winding find the Concave-convex clay rod ore deposit first after, China in succession in Anhui, river, Shandong, Zhejiang, expensive, blue or green, Inner Mongol, Hubei Province, Shanxi, Ji, provinces and regions such as sweet have found Concave-convex clay rod mineral deposit (point).Because Concave-convex clay rod has special fibre structure, high-specific surface area, unusual performances such as colloid, absorption and decolouring, it is widely used in fields such as chemical industry, light industry, agricultural, weaving, building materials, geological prospecting, casting, silicate industry, atomic energy industry, environmental protection and pharmacy, and good reputations such as " kings of thousand soil ", " soil of general-purpose " are arranged.In recent years, the application of Concave-convex clay rod in catalysis more and more paid close attention to, but but do not appear in the newspapers for carrier loaded nano oxidized copper catalyst and the research that applies it in the catalysis CO low-temperature oxidation with it.The price of comprehensive carrier and active constituent and catalytic performance etc. are many-sided to be considered, to being that the common metal Preparation of catalysts method of carrier loaded cupric oxide preparation and the research of catalytic applications are a significant job with the natural attapulgite clay.
We are carrier with the natural attapulgite clay, adopt deposition-sedimentation to prepare the CuO/Attapulgite catalyst of different cupric oxide load capacity.The active constituent cupric oxide is uniformly dispersed at carrier surface in the catalyst that is synthesized, and has the reactivity of very high catalysis CO low-temperature oxidation.
Summary of the invention
The preparation method who the objective of the invention is to expand the range of application of natural attapulgite clay and a kind of attapulgite clay loaded copper oxide catalyst is provided adopts simply deposition-sedimentation to prepare and has highly active CuO/Attapulgite catalyst.The load capacity of CuO is 8～28wt%, and high dispersive is at the attapulgite carrier surface, the experimental condition gentleness, and simple to operate, raw material is easy to get.
Another object of the present invention is to the CuO/Attapulgite catalyst is applied in the catalysis CO low-temperature oxidation.
Natural attapulgite clay used among the present invention is commercial, and raw material is easy to get.The catalyst of Supported CuO adopts deposition one sedimentation to make, and concrete preparation method may further comprise the steps:
Under the room temperature, with a certain amount of Cu (NO
3)
23H
2O is dissolved in the deionized water, adds the natural attapulgite clay carrier under the vigorous stirring, continues to stir a period of time, slowly adds the Na of 0.25M
2CO
3Solution to pH value of solution value is 8.0～10.0, and the suspension that stirring obtains 1～3 hour filters, washing, 80～120 ℃ of oven dry 4～8 hours, the CuO/Attapulgite catalyst with high catalysis CO low-temperature oxidation activity is prepared in 200～600 ℃ of roastings 3～6 hours.
The present invention is the catalyst of carrier loaded CuO with the natural attapulgite clay, and catalysis CO low-temperature oxidation is had high catalytic activity, and low energy makes the CO in the unstripped gas be completely oxidized to CO at 120 ℃
2Because the carrier Concave-convex clay rod is cheap and be easy to get, method for preparing catalyst is simple, so this catalyst system has bigger commercial Application meaning.
Advantage of the present invention is:
is a carrier with the natural attapulgite clay, adopts one step of deposition-sedimentation to prepare the CuO/Attapulgite catalyst, and the CuO load capacity is easily controlled, and is simple to operate, carrier and cheap being easy to get of used other prices of raw and semifnished materials.
The CuO/Attapulgite catalyst of preparation is to the catalytic activity height of CO low temperature oxidation.
preparation technology and equipment are simple, and great industrial production prospects is arranged.
The specific embodiment
Embodiment 1
Under the room temperature, be the Cu (NO of the load capacity of 8wt% with amount of calculation according to CuO
3)
23H
2O is dissolved in the deionized water, adds 1 gram natural attapulgite clay and fully stir it is uniformly dispersed in this solution.Slowly drip the Na of 0.25M under the vigorous stirring
2CO
3Solution is 9.0 until the pH value to above-mentioned solution.Continue to stir the gained suspension 1 hour, suction filtration, washing, 80 ℃ of dryings 4 hours, 200 ℃ of roastings 5 hours, preparing CuO content is the CuO/Attapulgite catalyst of 8wt%.
The activity of such catalysts evaluation is carried out in fixed bed continuous-flow differential reactor, and reactor is the stainless steel tube of internal diameter 7mm, and loaded catalyst is 200mg, and unstripped gas consists of the air that contains 10%CO (volume ratio), and air speed is 11000ml h
-1g
-1, react 15 minutes CO and CO in the afterproduct gas
2Content is through being furnished with the GC-900A gas chromatograph on-line analysis of thermal conductivity cell detector.It is 190 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 2
CuO load capacity 8wt% among the embodiment 1 is become 12wt%, and other is all with embodiment 1.It is 170 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 3
CuO load capacity 8wt% among the embodiment 1 is become 16wt%, and other is all with embodiment 1.It is 140 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 4
CuO load capacity 8wt% among the embodiment 1 is become 20%, and other is all with embodiment 1.It is 120 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 5
CuO load capacity 8wt% among the embodiment 1 is become 24wt%, and other is all with embodiment 1.It is 120 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 6
CuO load capacity 8wt% among the embodiment 1 is become 28wt%, and other is all with embodiment 1.It is 150 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 7
Catalyst sintering temperature among the embodiment 1 is 200 ℃ becomes 300 ℃, other is all with embodiment 1.It is 200 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 8
Catalyst sintering temperature among the embodiment 1 is 200 ℃ becomes 400 ℃, other is all with embodiment 1.It is 210 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Embodiment 9
Catalyst sintering temperature among the embodiment 1 is 200 ℃ becomes 500 ℃, other is all with embodiment 1.It is 230 ℃ that the carbon monoxide conversion ratio reaches 100% o'clock reaction temperature.
Claims (8)
1. a natural attapulgite clay loaded copper oxide catalyst is characterized in that it is the copper oxide particle that loads on the Concave-convex clay rod, to the catalytic activity height of CO low temperature oxidation.
2. according to the preparation method of the described attapulgite clay loaded copper oxide catalyst of claim 1, it is characterized in that adopting natural attapulgite to make carrier, with the preparation of deposition-sedimentation, the CuO load capacity is easily controlled in the preparation process, and is simple to operate, and raw material is easy to get.
3. the described Preparation of catalysts method of claim 2 is characterized in that comprising the following steps: the natural attapulgite clay carrier joined and is dissolved with amount of calculation Cu (NO
3)
23H
2In the aqueous solution of O, slowly add the Na of 0.25M
2CO
3Solution and stirring reach certain pH value until solution, continue to stir the suspension that obtains, and filter, and washing is dried, and attapulgite clay loaded copper oxide catalyst is prepared in roasting.
4. Preparation of catalysts method according to claim 3 is characterized in that: add Na
2CO
3The pH scope of the suspension that solution will reach is 8.0～10.0.
5. Preparation of catalysts method according to claim 3 is characterized in that: the mixing time of mixing suspension is 1～3 hour, and the bake out temperature of catalyst is 80～120 ℃, and drying time is 4～8 hours.
6. Preparation of catalysts method according to claim 3 is characterized in that: the sintering temperature of catalyst is 200～600 ℃, and roasting time is 3～6 hours.
7. Preparation of catalysts method according to claim 3 is characterized in that: the load capacity of CuO is 4～30wt.% in the catalyst, and roasting time is 3～6 hours.
8. according to the described Application of Catalyst of claim 1, it is as follows to it is characterized in that this catalyst is used for the reaction condition of catalysis CO low-temperature oxidation: material mixed gas is that the content of CO is the air of 10% (V/V), total flow is 33～67mL/min, active testing continued operation, active testing temperature are room temperature～240 ℃.
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| CNA2008100535595A CN101288847A (en) | 2008-06-18 | 2008-06-18 | Attapulgite clay loaded copper oxide catalyst and its application in carbon monoxide oxidation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101054A (en) * | 2011-01-11 | 2011-06-22 | 山西大学 | Carbon monoxide oxidation catalyst and preparation method thereof |
| CN102198401A (en) * | 2011-04-08 | 2011-09-28 | 东南大学 | Cobalt molybdenum CO sulfur-tolerant shift catalyst by using attapulgite clay as carrier and its preparation method |
| CN102350365A (en) * | 2011-08-16 | 2012-02-15 | 淮阴师范学院 | Synthesis method of CdS-attapulgite photoelectric composite material |
| CN107445176A (en) * | 2017-08-30 | 2017-12-08 | 合复新材料科技(无锡)有限公司 | Tin Sb doped light color electric insulation laser activation can metallize the preparation method of powder |
| CN108607557A (en) * | 2018-05-22 | 2018-10-02 | 常州大学 | A kind of preparation method and application of copper oxide clay |
| CN109225206A (en) * | 2018-08-31 | 2019-01-18 | 合肥师范学院 | A kind of preparation method and applications of attapulgite loaded transition metal oxide composite material |
| US10906024B2 (en) | 2015-03-23 | 2021-02-02 | Basf Corporation | Carbon dioxide sorbents for indoor air quality control |
| US11229897B2 (en) | 2016-02-12 | 2022-01-25 | Basf Corporation | Carbon dioxide sorbents for air quality control |
-
2008
- 2008-06-18 CN CNA2008100535595A patent/CN101288847A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101054A (en) * | 2011-01-11 | 2011-06-22 | 山西大学 | Carbon monoxide oxidation catalyst and preparation method thereof |
| CN102198401A (en) * | 2011-04-08 | 2011-09-28 | 东南大学 | Cobalt molybdenum CO sulfur-tolerant shift catalyst by using attapulgite clay as carrier and its preparation method |
| CN102350365A (en) * | 2011-08-16 | 2012-02-15 | 淮阴师范学院 | Synthesis method of CdS-attapulgite photoelectric composite material |
| US10906024B2 (en) | 2015-03-23 | 2021-02-02 | Basf Corporation | Carbon dioxide sorbents for indoor air quality control |
| US11229897B2 (en) | 2016-02-12 | 2022-01-25 | Basf Corporation | Carbon dioxide sorbents for air quality control |
| CN107445176A (en) * | 2017-08-30 | 2017-12-08 | 合复新材料科技(无锡)有限公司 | Tin Sb doped light color electric insulation laser activation can metallize the preparation method of powder |
| CN107445176B (en) * | 2017-08-30 | 2019-11-19 | 合复新材料科技(无锡)有限公司 | Tin Sb doped light color electrical isolation laser activation can metallize the preparation method of powder |
| CN108607557A (en) * | 2018-05-22 | 2018-10-02 | 常州大学 | A kind of preparation method and application of copper oxide clay |
| CN109225206A (en) * | 2018-08-31 | 2019-01-18 | 合肥师范学院 | A kind of preparation method and applications of attapulgite loaded transition metal oxide composite material |
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Application publication date: 20081022 |