CN108927158A - A method of preparing Cu-Co oxide catalyst - Google Patents
A method of preparing Cu-Co oxide catalyst Download PDFInfo
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- CN108927158A CN108927158A CN201810740451.7A CN201810740451A CN108927158A CN 108927158 A CN108927158 A CN 108927158A CN 201810740451 A CN201810740451 A CN 201810740451A CN 108927158 A CN108927158 A CN 108927158A
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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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- 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
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of methods for preparing Cu-Co oxide catalyst, and steps are as follows: by Co (NO3)2·6H2O and Cu (NO3)2·3H2O is dissolved in deionized water；By NH4OH、(NH4)2CO3、Na2CO3It is dissolved in deionized water with NaOH as precipitating reagent, at 25-35 DEG C, precipitating reagent is slowly added dropwise while stirring into nitrate solution, adjusting pH is 8-9, filters, is washed with deionized 4-6 times after being aged 23-25h, in 100-105 DEG C of dry 14-16h, obtain precursor powder, precursor powder is placed in 485-495 DEG C of roasting 6-7h of Muffle furnace, and cooling to obtain the final product.This method is easy, quick, easy to operate, and the Cu/Co catalyst of preparation has good stability to the catalysis combustion degradation superior activity of normal heptane, and reaction front and back catalyst structure is stable and surface is generated without carbon deposit.
Description
Technical field
The present invention relates to a kind of methods for preparing Cu-Co oxide catalyst.
Background technique
The volatile organic compounds (VOCs) of discharge beyond standards is considered as main air pollution in industrial processes
One of object not only has toxicity, also results in photochemical fog, causes to seriously endanger to human health.Normal heptane conduct
One of representative object of VOCs is widely used in the industries such as hardware, electronics, printing and shoemaking, it can occur in an atmosphere certainly
It is reacted by base, generates alkyl nitrate and hydroxy alkyl ketone, both substances are one of photochemical fog Producing reasons.
Catalytic combustion technology can be degradable for carbon dioxide and water by VOCs at relatively low temperature, it is considered to be
Efficiently, environmentally friendly one of VOCs Treatment process.Catalysis burning used catalyst mainly has: (1) noble metal catalyst；(2) non-expensive
Metallic catalyst.Noble metal catalyst can degrade volatile organic matter at a lower temperature, but it is expensive, holds in the reaction
Easy-sintering or poisoning and deactivation.And non-precious metal catalyst has that at low cost, catalytic activity is high, stability is strong and reproducibility etc.
Advantage.Co3O4It is a kind of common non-noble metal oxide catalyst, high catalytic oxidation activity depends primarily on its spinelle
Type structure memory a large amount of Lacking oxygens and high concentration oxygen species.CuO is equally a kind of high activated catalyst, is used extensively
In the deep oxidation of the pollutants such as carbon monoxide, methane, methanol, ethyl alcohol and acetaldehyde.It is waved although Co is applied to degradation
In the research of hair property organic matter, but the research of Cu/Co composite oxide catalysts is rarely reported both at home and abroad, is lacked to difference
Precipitating reagent preparation, the influence of Cu/Co ratio etc. systematic Study.
Summary of the invention
The purpose of the present invention is to provide a kind of methods for preparing Cu-Co oxide catalyst.
The present invention is realized by following technical solution:
A method of Cu-Co oxide catalyst is prepared, is included the following steps: 20-30 parts of Co (NO3)2·6H2O and 5-10
Part Cu (NO3)2·3H2O is dissolved in 85-95 parts of deionized waters；By 7-9 parts of NH4OH, 5-10 parts of (NH4)2CO3, 10-14 parts
Na2CO3It is dissolved in 60-70 parts of deionized waters with 2-4 parts of NaOH and being slowly added dropwise while stirring at 25-35 DEG C as precipitating reagent
For precipitating reagent into nitrate solution, adjusting pH is 8-9, filters, is washed with deionized 4-6 times, in 100- after being aged 23-25h
105 DEG C of dry 14-16h obtain precursor powder, and precursor powder is placed in 485-495 DEG C of roasting 6-7h of Muffle furnace, and cooling is
?；Each raw material is parts by weight.
Preferably, in the method, at 30 DEG C.
Preferably, in the method, adjusting pH is 8.5.
Preferably, in the method, ageing is for 24 hours.
Preferably, in the method, in 102 DEG C of dry 15h.
Preferably, in the method, precursor powder is placed in 490 DEG C of roasting 6.5h of Muffle furnace.
The technology of the present invention effect:
This method is easy, quick, easy to operate, and the Cu/Co catalyst of preparation is to the catalysis combustion degradation superior activity of normal heptane, surely
Qualitative good, reaction front and back catalyst structure is stable and surface is generated without carbon deposit.
Specific embodiment
Essentiality content of the invention is specifically introduced below with reference to embodiment.
Embodiment 1
A method of Cu-Co oxide catalyst is prepared, is included the following steps: 25 parts of Co (NO3)2·6H2O and 7 part of Cu
(NO3)2·3H2O is dissolved in 90 parts of deionized waters；By 8 parts of NH4OH, 7 parts of (NH4)2CO3, 12 parts of Na2CO3It is dissolved in 3 parts of NaOH
Precipitating reagent is slowly added dropwise while stirring into nitrate solution at 30 DEG C as precipitating reagent in 65 parts of deionized waters, adjusts pH
It is 8.5, ageing is filtered afterwards for 24 hours, is washed with deionized 5 times, in 102 DEG C of dry 15h, is obtained precursor powder, precursor
End is placed in 490 DEG C of roasting 6.5h of Muffle furnace, and cooling to obtain the final product；Each raw material is parts by weight.
Embodiment 2
A method of Cu-Co oxide catalyst is prepared, is included the following steps: 20 parts of Co (NO3)2·6H2O and 5 part of Cu
(NO3)2·3H2O is dissolved in 85 parts of deionized waters；By 7 parts of NH4OH, 5 parts of (NH4)2CO3, 10 parts of Na2CO3It is dissolved in 2 parts of NaOH
Precipitating reagent is slowly added dropwise while stirring into nitrate solution at 25 DEG C as precipitating reagent in 60 parts of deionized waters, adjusts pH
It is 8, is filtered after being aged 23h, be washed with deionized 4 times, in 100 DEG C of dry 14h, obtain precursor powder, precursor powder
It is placed in 485 DEG C of roasting 6h of Muffle furnace, cooling to obtain the final product；Each raw material is parts by weight.
Embodiment 3
A method of Cu-Co oxide catalyst is prepared, is included the following steps: 30 parts of Co (NO3)2·6H2O and 10 part of Cu
(NO3)2·3H2O is dissolved in 95 parts of deionized waters；By 9 parts of NH4OH, 10 parts of (NH4)2CO3, 14 parts of Na2CO3It is molten with 4 parts of NaOH
Precipitating reagent is slowly added dropwise while stirring into nitrate solution at 35 DEG C as precipitating reagent in 70 parts of deionized waters, adjusts
PH is 9, filters after being aged 25h, is washed with deionized 6 times, in 105 DEG C of dry 16h, obtains precursor powder, precursor
End is placed in 495 DEG C of roasting 7h of Muffle furnace, and cooling to obtain the final product；Each raw material is parts by weight.
This method is easy, quick, easy to operate, and the Cu/Co catalyst of preparation is excellent to the catalysis combustion degradation activity of normal heptane
It is different, it has good stability, reaction front and back catalyst structure is stable and surface is generated without carbon deposit.
Claims (6)
1. a kind of method for preparing Cu-Co oxide catalyst, it is characterised in that include the following steps: 20-30 parts of Co
(NO3)2·6H2O and 5-10 parts of Cu (NO3)2·3H2O is dissolved in 85-95 parts of deionized waters；By 7-9 parts of NH4OH, 5-10 parts
(NH4)2CO3, 10-14 parts of Na2CO3It is dissolved in 60-70 parts of deionized waters with 2-4 parts of NaOH as precipitating reagent, at 25-35 DEG C,
Precipitating reagent is slowly added dropwise while stirring into nitrate solution, adjusting pH is 8-9, filters after being aged 23-25h, uses deionized water
Washing 4-6 times, in 100-105 DEG C of dry 14-16h, obtains precursor powder, precursor powder is placed in 485-495 DEG C of Muffle furnace
Roast 6-7h, cooling to obtain the final product；Each raw material is parts by weight.
2. according to the method described in claim 1, it is characterized by: at 30 DEG C.
3. according to the method described in claim 1, it is characterized by: adjusting pH is 8.5.
4. according to the method described in claim 1, it is characterized by: being aged for 24 hours.
5. according to the method described in claim 1, it is characterized by: in 102 DEG C of dry 15h.
6. according to the method described in claim 1, it is characterized by: precursor powder is placed in 490 DEG C of roasting 6.5h of Muffle furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740451.7A CN108927158A (en) | 2018-07-07 | 2018-07-07 | A method of preparing Cu-Co oxide catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810740451.7A CN108927158A (en) | 2018-07-07 | 2018-07-07 | A method of preparing Cu-Co oxide catalyst |
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| CN108927158A true CN108927158A (en) | 2018-12-04 |
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| CN201810740451.7A Withdrawn CN108927158A (en) | 2018-07-07 | 2018-07-07 | A method of preparing Cu-Co oxide catalyst |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975870A (en) * | 2019-12-12 | 2020-04-10 | 重庆工商大学 | Preparation method and application of copper-cobalt composite oxide catalyst |
| CN111495371A (en) * | 2020-05-28 | 2020-08-07 | 太原理工大学 | Rapid preparation method of cobalt spinel catalyst |
-
2018
- 2018-07-07 CN CN201810740451.7A patent/CN108927158A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975870A (en) * | 2019-12-12 | 2020-04-10 | 重庆工商大学 | Preparation method and application of copper-cobalt composite oxide catalyst |
| CN111495371A (en) * | 2020-05-28 | 2020-08-07 | 太原理工大学 | Rapid preparation method of cobalt spinel catalyst |
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