CN109621972A - A method of CO is eliminated using CuMnOx catalyst - Google Patents
A method of CO is eliminated using CuMnOx catalyst Download PDFInfo
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- CN109621972A CN109621972A CN201811525591.9A CN201811525591A CN109621972A CN 109621972 A CN109621972 A CN 109621972A CN 201811525591 A CN201811525591 A CN 201811525591A CN 109621972 A CN109621972 A CN 109621972A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
- H01M8/0668—Removal of carbon monoxide or carbon dioxide
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The present patent application belongs to heterogeneous catalysis technology field, specifically disclose it is a kind of using CuMnOx catalyst eliminate CO method, CuMnOx catalyst in the form of sheets, with O2CO is eliminated for oxidizer catalytic, in O2Under conditions of concentration only has 1%, CO starts to be oxidized to CO at 30 DEG C2, CO can be all oxidized at 108-115 DEG C2, the temperature that 50% CO is oxidized is 65-70 DEG C.Present invention is mainly used for CO is eliminated under low concentration Oxygen Condition, to solve to realize that the CO catalytic removal under low oxygen concentration is reacted using cheap metal oxide catalyst.
Description
Technical field
The invention belongs to heterogeneous catalysis technology fields, specifically disclose a kind of using CuMnOx catalyst elimination CO's
Method.
Background technique
The elimination reaction of CO all has important value, such as CO in many aspects2The purifying of gas, CO gas in laser
Material for detector, breath for gas purification device, tobacco drop evil, closed system (such as aircraft, submarine, spacecraft) and automobile
The elimination etc. of trace amounts of CO in tail gas.
In a fuel cell, secondary pollution is not generated because its is high-efficient using hydrogen as the hydrogen fuel cell of fuel, operated
The low feature of temperature is considered as the new energy of 21 century great prospect.Pass through low-carbon alcohols and hydrocarbon moiety oxidation or vapor weight
Whole hydrogen obtained often contains about 5 × 105Ppm~2 × 106The CO of ppm (0.5-2%), fuel cell can not only be caused by existing
Electrode poisoning but also can compete with hydrogen is reacted with oxygen, is greatly lowered so as to cause the efficiency of fuel cell, so need
CO is eliminated, especially CO is eliminated under low concentration Oxygen Condition.Common CO eliminates your gold catalyst is
Metal catalyst, cheap base metal CO catalytic removal catalyst have always the attraction of height.
Summary of the invention
The purpose of the present invention is to provide a kind of methods for eliminating CO using CuMnOx catalyst, use cheap gold
Belong to the CO catalytic removal under oxide catalyst realization low oxygen concentration.
In order to achieve the above object, base case of the invention are as follows: a kind of to eliminate CO's using CuMnOx catalyst
Method, CuMnOx catalyst in the form of sheets, with O2CO is eliminated for oxidizer catalytic, in O2Under conditions of concentration only has 1%, CO is 30
DEG C i.e. start to be oxidized to CO2, CO is all oxidized at 108-115 DEG C2, the temperature that 50% CO is oxidized is 65-70
℃。
The Catalysis Principles and beneficial effect of this base case are:
(1) the cheap CuMnOx catalyst elimination CO of present invention use, excellent catalytic effect, reaction temperature are low；
(2) this method catalytic removal CO is used, O is worked as2Only accounting under conditions of mixed gas moles total number 1% can be complete by CO
Portion eliminates, i.e., this method can eliminate CO under oxygen lean conditions.
Further, wherein CO and O2Molar ratio be 1:1, CO and O2Total mole number account for reaction gas total mole number
2%.
Further, the catalyst used is with Cu (NO3)2As copper precursors and Mn (NO3)2Aqueous solution is as manganese precursor, with grass
Sour ammonium prepares CuMnOx catalyst as precipitating reagent, using coprecipitation.It can will be in copper precursors and manganese precursor using ammonium oxalate
Cu more than 86%2+And Mn2+It precipitates to form CuMnOx catalyst, and will not introduce in the product in addition to Cu and Mn
It is difficult to the impurity removed, is not easy to make catalyst poisoning in this way, is beneficial to improve the service life of catalyst.
Further, the preparation of the CuMnOx catalyst used the following steps are included:
(1) by Cu (NO3)2With Mn (NO3)2Aqueous solution is mixed to get copper-manganese mixed solution, and stirring 0.5-1h makes its mixing
Uniformly；
(2) at room temperature, the resulting Cu-Mn mixed solution of step (1) is added drop-wise to (NH4)2C2O4In solution；Continue
0.5-1h is stirred at 45-55 DEG C and generates precipitating, and mixed liquor is then stood into 8-10h；
(3) filtration step (2) resulting mixed liquor obtains much filtrate；
(4) much filtrate is dried to obtain dry powder, powder is put into Muffle furnace and is roasted, maturing temperature 520-
530 DEG C, CuMnOx catalyst is obtained after roasting 5-6h.
Prepare CuMnOx catalyst using above-mentioned steps, reaction condition is mild, easy to operate, avoid introduce potassium ion,
Sodium ion and sulfate ion etc. other be difficult to the ion completely removed, it is not easy to make catalyst poisoning, be beneficial to improve catalysis
The service life of agent.By the precipitation temperature in control preparation process, the different catalyst of catalytic performance can be obtained.
Further, the molar ratio of Cu and Mn is 1:4-5 in step (1).Using the feed ratio of above range, obtain
The good catalytic activity of CuMnOx catalyst can all eliminate CO between 108-115 DEG C.
Further, the molar ratio of Cu and Mn is 1:4.7 in step (1), and precipitation reaction temperature is 51 DEG C.As Cu and Mn
Molar ratio be 1:4.7, the catalytic efficiency highest of catalyst obtained.
Further, the active component in CuMnOx catalyst includes CuMn2O4And Cu1.5Mn1.5O4, wherein CuMn2O4Amount
Greater than Cu1.5Mn1.5O4Amount.
Detailed description of the invention
Fig. 1 is scanning electron microscope (SEM) figure of the CuMnOx catalyst in the embodiment of the present invention 1；
Fig. 2 is that Electronic Speculum (TEM) figure is retouched in the transmission of the CuMnOx catalyst in the embodiment of the present invention 1；
Fig. 3 is X-ray diffraction (XRD) figure of the CuMnOx catalyst in the embodiment of the present invention 1；
Fig. 4 is the catalytic performance figure of the CuMnOx catalyst in the embodiment of the present invention 1.
Specific embodiment
It is further described below by specific embodiment:
Ammonium oxalate ((NH mentioned in the present invention4)2C2O4), copper nitrate (Cu (NO3)2), manganese nitrate (50%Mn (NO3)2
Solution) it buys from the smooth Science and Technology Co., Ltd. of upper Haitai.All chemical reagent directly use, using preceding without further locating
Reason.Carry out the reaction gas (0.8-1%CO+1%O of CO catalytic removal reaction test2+ 98%Ar) purchase have from Chongqing southern exposure gas
Limit company, high-purity CO, the high-purity O that reaction gas is 99.999% by purity2, high-purity Ar is formulated.
CO is eliminated using CuMnOx catalyst in the present invention, CuMnOx catalyst is with Cu (NO3)2As copper precursors, Mn
(NO3)2Solution is as manganese precursor, with ammonium oxalate (NH4)2C2O4As precipitating reagent, CuMnOx catalyst is prepared using coprecipitation.
Prepare CuMnOx catalyst the following steps are included:
(1) by copper nitrate (Cu (NO3)2) and 50% Mn (NO3)2Solution aqueous solution is mixed to get by certain molar ratio
Copper-manganese mixed solution, wherein the molar ratio of Cu and Mn is 1:4-5, and stirring 0.5-1h is uniformly mixed it；
(2) at room temperature, the resulting Cu-Mn mixed solution of step (1) is added drop-wise to (NH4)2C2O4In solution；Continue
0.5-1h is stirred at 45-55 DEG C, and mixed liquor is then stood into 8-10h；
(3) filtration step (2) resulting mixed liquor obtains much filtrate；
(4) much filtrate is dried 24 hours at 50 DEG C and obtains dry powder, powder is moved into ceramic crucible and be put into horse
Not roasting, maturing temperature are warming up to 520-530 DEG C with the heating rate of 11 DEG C/min in furnace, after roasting 5h at 520-530 DEG C
Obtain CuMnOx catalyst.Active component in CuMnOx catalyst obtained includes CuMn2O4And Cu1.5Mn1.5O4, wherein
CuMn2O4Amount be greater than Cu1.5Mn1.5O4Amount.
In 1-5 of the embodiment of the present invention and comparative example 1-8 catalyst obtained to the elimination test experiments concrete operations of CO such as
Under:
100mgCuMnOx catalyst is fitted into crystal reaction tube, being passed through proportion is CO (1%)+O2(1%)+Ar
(98%) the CO catalytic oxidation performance of reaction gas test catalyst.Reaction gas flow speed is controlled using mass flowmenter in 20ml/
The temperature of min, reaction tube are controlled by temperature controller, and heating rate when heating is 10 DEG C/min.It is produced using Hai De company, Britain
QIC-20 level four bars mass spectrum carry out reaction gas in CO content, generation CO2The monitoring of content.
The test result of catalyst CO made from embodiment 1-5 and comparative example 1-8 is as shown in table 1.
Table 1
Pass through comparative example 1-5, when the molar ratio of Cu and Mn is 1:4.7, catalyst CO's obtained
Initial temperature is minimum, at 30 DEG C can catalytic removal CO, can be by CO whole catalytic removal, compared to it at 108 DEG C
The catalyst that catalytic performance is best in the present invention can be made in his embodiment, the experiment condition in embodiment 1.
Fig. 1 is that the obtained molar ratio of embodiment 1 is 1:4.7, and precipitation reaction temperature is the CuMnOx of 51 DEG C of preparations
Scanning electron microscope (SEM) figure of catalyst.It can be seen that CuMnOx catalyst constitutes the pattern of big sheet by uniform particle.
Fig. 2 is that the obtained molar ratio of embodiment 1 is 1:4.7, and precipitation reaction temperature is the CuMnOx of 51 DEG C of preparations
Transmission electron microscope (TEM) figure of catalyst.Catalyst forms the crystal of structure comparison rule as we can see from the figure, crystallinity compared with
Height has the lattice fringe of obviously oxide.
Fig. 3 is that the obtained molar ratio of embodiment 1 is 1:4.7, and precipitation reaction temperature is the CuMnOx of 51 DEG C of preparations
X-ray diffraction (XRD) figure of catalyst.Very strong Mn can be told at 33 °, 23 °, 66 °2O3Diffraction maximum；45.3°,
There is stronger Mn at 55.5 °3O4Diffraction maximum.In addition, there is a Cu at 36 °1.5Mn1.5O4Phase Cu-Mn complex oxide
Diffraction maximum；There is a CuMn at 38.4 °2O4The diffraction maximum of phase Cu-Mn complex oxide.Mn2O3And Mn3O4The diffraction maximum of species
For intensity considerably beyond the diffraction maximum of Cu-Mn complex oxide, this illustrates the amount of Cu-Mn complex oxide in the catalyst far fewer than manganese
Oxide, this is consistent with the copper manganese ratio 0.081:1 of this catalyst measured using X-ray fluorescence spectra (XRF).From copper manganese
CuMn known to the relative intensity comparison of the diffraction maximum of composite oxides2O4The amount of phase species has been more than Cu1.5Mn1.5O4Phase species.
Fig. 4 is that the obtained molar ratio of embodiment 1 is 1:4.7, and precipitation reaction temperature is the CuMnOx of 51 DEG C of preparations
Catalyst is with O2For the performance of the CO elimination reaction of oxidant.It can be seen that CO starts to be oxidized to CO at 30 DEG C2,
108 DEG C can be all oxidized to CO2, 50% CO can be oxidized to CO at 69 DEG C by catalyst2, compared to other implementations
, catalyst catalytic performance made from embodiment 1 is preferable.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.
Claims (7)
1. it is a kind of using CuMnOx catalyst eliminate CO method, which is characterized in that CuMnOx catalyst in the form of sheets, with O2
CO is eliminated for oxidizer catalytic, in O2Under conditions of concentration only has 1%, CO starts to be oxidized to CO at 30 DEG C2, in 108-115
DEG C i.e. be all oxidized to CO2, the temperature that 50% CO is oxidized is 65-70 DEG C.
2. it is according to claim 1 it is a kind of using CuMnOx catalyst eliminate CO method, which is characterized in that CO and
O2Molar ratio be 1:1, CO and O2Total mole number account for the 2% of reaction gas total mole number.
3. a kind of method for eliminating CO using CuMnOx catalyst according to claim 1, which is characterized in that use
Catalyst with Cu (NO3)2As copper precursors and Mn (NO3)2Aqueous solution is as manganese precursor, using ammonium oxalate as precipitating reagent, uses
Coprecipitation prepares CuMnOx catalyst.
4. a kind of method for eliminating CO using CuMnOx catalyst according to claim 1-3, feature
Be, the preparation of the CuMnOx catalyst used the following steps are included:
(1) by Cu (NO3)2With Mn (NO3)2Aqueous solution is mixed to get copper-manganese mixed solution, and stirring 0.5-1h is uniformly mixed it；
(2) at room temperature, the resulting Cu-Mn mixed solution of step (1) is added drop-wise to (NH4)2C2O4In solution；Continue in 45-55
0.5-1h is stirred at DEG C and generates precipitating, and mixed liquor is then stood into 8-10h；
(3) filtration step (2) resulting mixed liquor obtains much filtrate；
(4) much filtrate is dried to obtain dry powder, powder is put into Muffle furnace and is roasted, maturing temperature 520-530
DEG C, CuMnOx catalyst is obtained after roasting 5-6h.
5. a kind of method for eliminating CO using CuMnOx catalyst according to claim 4, which is characterized in that step
(1) molar ratio of Cu and Mn is 1:4-5 in.
6. a kind of method for eliminating CO using CuMnOx catalyst according to claim 5, which is characterized in that step
(1) molar ratio of Cu and Mn is 1:4.7 in, and precipitation reaction temperature is 51 DEG C.
7. a kind of method for eliminating CO using CuMnOx catalyst according to claim 6, which is characterized in that
Active component in CuMnOx catalyst includes CuMn2O4And Cu1.5Mn1.5O4, wherein CuMn2O4Amount be greater than Cu1.5Mn1.5O4's
Amount.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111514919A (en) * | 2020-05-22 | 2020-08-11 | 重庆工商大学 | Preparation method for constructing carbon-based porous transition metal catalyst |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338548A (en) * | 2013-08-09 | 2015-02-11 | 中国石油化工股份有限公司 | Compound copper oxide catalyst as well as preparation method and application thereof |
| US20150105243A1 (en) * | 2013-03-22 | 2015-04-16 | Clean Diesel Technologies, Inc. | Systems and Methods for Zero-PGM Binary Catalyst Having Cu, Mn, and Fe for TWC Applications |
| CN106031873A (en) * | 2016-07-19 | 2016-10-19 | 河南师范大学 | Preparation method of high-specific-surface CuMn2O4 catalyst for CO low-temperature oxidation removal |
| US20160361711A1 (en) * | 2015-06-15 | 2016-12-15 | Clean Diesel Technologies, Inc. | Zero-PGM TWC with High Redox Reversibility |
| CN107557908A (en) * | 2017-10-16 | 2018-01-09 | 济南大学 | A kind of bead chain shape CuMn2O4The preparation method and products obtained therefrom of/ZnO composite fibres |
-
2018
- 2018-12-13 CN CN201811525591.9A patent/CN109621972B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150105243A1 (en) * | 2013-03-22 | 2015-04-16 | Clean Diesel Technologies, Inc. | Systems and Methods for Zero-PGM Binary Catalyst Having Cu, Mn, and Fe for TWC Applications |
| CN104338548A (en) * | 2013-08-09 | 2015-02-11 | 中国石油化工股份有限公司 | Compound copper oxide catalyst as well as preparation method and application thereof |
| US20160361711A1 (en) * | 2015-06-15 | 2016-12-15 | Clean Diesel Technologies, Inc. | Zero-PGM TWC with High Redox Reversibility |
| CN106031873A (en) * | 2016-07-19 | 2016-10-19 | 河南师范大学 | Preparation method of high-specific-surface CuMn2O4 catalyst for CO low-temperature oxidation removal |
| CN107557908A (en) * | 2017-10-16 | 2018-01-09 | 济南大学 | A kind of bead chain shape CuMn2O4The preparation method and products obtained therefrom of/ZnO composite fibres |
Non-Patent Citations (2)
| Title |
|---|
| 王尚弟等: "《催化剂工程导论》", 31 August 2011, 化学工业出版社 * |
| 贾瑛等: "《轻质碳材料的应用》", 30 November 2013, 国防工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111514919A (en) * | 2020-05-22 | 2020-08-11 | 重庆工商大学 | Preparation method for constructing carbon-based porous transition metal catalyst |
| CN111514919B (en) * | 2020-05-22 | 2022-07-08 | 重庆工商大学 | Preparation method for constructing carbon-based porous transition metal catalyst |
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