CN108795578A - A method of utilizing catalyzed by solid base preparing biodiesel by ester exchange - Google Patents
A method of utilizing catalyzed by solid base preparing biodiesel by ester exchange Download PDFInfo
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- CN108795578A CN108795578A CN201810743452.7A CN201810743452A CN108795578A CN 108795578 A CN108795578 A CN 108795578A CN 201810743452 A CN201810743452 A CN 201810743452A CN 108795578 A CN108795578 A CN 108795578A
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- polyaniline
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/04—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fats or fatty oils
- C11C3/10—Ester interchange
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
-
- 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
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
- B01J2231/49—Esterification or transesterification
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The present invention relates to a kind of methods using catalyzed by solid base preparing biodiesel by ester exchange, specifically comprise the following steps：(1) the deacidification processing of grease：Suitable sodium hydrate aqueous solution is added into grease, after stirring 0.5-1.0h, it is transferred in separatory funnel, stratification collects supernatant liquid, after 50-60 DEG C of water washing to neutrality, hexamethylene is added, extra moisture is removed with water knockout drum, finally vacuum distillation removes hexamethylene to get except acid lipid；(2) it will be obtained in step (1) except after acid lipid, methanol, catalyst mixing, it is heated to 60-65 DEG C under stirring, after reaction 3-4 hours, filtering or centrifugation recycling catalyst, remaining reaction solution is after being evaporated off methanol, stratification, supernatant liquid are biodiesel, and lower layer is glycerine.
Description
Technical field
The invention belongs to biodiesel catalyst fields, and in particular to a kind of to prepare biology using catalyzed by solid base transesterification
The method of diesel oil.
Background technology
Biodiesel becomes the hot spot of various countries' research because of its environment friendly, recyclability.Biodiesel is with vegetable oil, dynamic
Object fat oil, waste cooking oils etc. are raw material, and carrying out transesterification with the alcohol of low molecular weight respectively is made fatty acid alkyl monoesters,
Property is very close with mineral diesel, is a kind of reproducible clean fuel.Although having many methods for preparing biodiesel,
But large-scale industrial production, it still uses based on the homogeneous catalysis such as traditional liquid acid, alkali, common homogeneous catalyst has
CaO、H2SO4, NaOH etc., severe corrosion to equipment, and product need to carry out neutralization washing, so as to cause a large amount of industrial wastewaters
It generates, causes environmental pollution.The present invention provides a kind of polyaniline-coated biology carbon material supported solid base catalyst, can be with
Biodiesel is efficiently prepared, has the characteristics that reaction condition is mild, easily separated, reusable.
Invention content
The present invention provides a kind of polyaniline-coated biology carbon material, it is characterised in that the polyaniline-coated biology carbon material
Preparation method include the following steps：
(1) dry sweet potato leaves are taken, under nitrogen protection, are warming up to 600-700 degree, after being carbonized 5-6 hours, natural cooling
To room temperature, biological carbon material is obtained；
(2) after the biological carbon material hydrochloric acid solution ultrasound for obtaining step (1) is impregnated 4-5 hours, aniline, ice bath is added
Under, ammonium persulfate solution is added, 6-10h is reacted in continuation under ice bath, and filtering, washing of precipitate are drying to obtain polyaniline-coated life
Object carbon material.
The preferred 1.0-2.0mol/L of concentration of hydrochloric acid described in step (2), every gram of biological carbon materials'use 10-15mL hydrochloric acid
Solution, every gram of biological carbon materials'use aniline 0.5mL, every milliliter of aniline use 10-15mmol ammonium persulfates, the ammonium persulfate
The preferred 0.5-1.0mol/L of concentration of solution；Supersonic frequency is 30-40kHz.
Another embodiment of the present invention provides application of the above-mentioned polyaniline-coated biology carbon material in loading alkali.
Another embodiment of the present invention provides a kind of polyaniline-coated biology carbon material supported alkali, it is characterised in that described
The preparation method of the carbon material supported alkali of polyaniline-coated biology includes the following steps：
(1) dry sweet potato leaves are taken, under nitrogen protection, are warming up to 600-700 degree, after being carbonized 5-6 hours, natural cooling
To room temperature, biological carbon material is obtained；
(2) after the biological carbon material hydrochloric acid solution ultrasound for obtaining step (1) is impregnated 4-5 hours, aniline, ice bath is added
Under, ammonium persulfate solution is added, 6-10h is reacted in continuation under ice bath, and filtering, washing of precipitate are drying to obtain polyaniline-coated life
Object carbon material.
(3) the polyaniline-coated biology carbon material for obtaining step (2) and KF, K2CO3After mixing and ball milling 6 hours, use successively
Water, absolute ethyl alcohol washing, be dried in vacuo under the conditions of 90 DEG C be dried in vacuo for 24 hours up to polyaniline-coated biology it is carbon material supported
Alkali.
The preferred 1.0-2.0mol/L of concentration of hydrochloric acid described in step (2), every gram of biological carbon materials'use 10-15mL hydrochloric acid
Solution, every gram of biological carbon materials'use aniline 0.5mL, every milliliter of aniline use 10-15mmol ammonium persulfates, the ammonium persulfate
The preferred 0.5-1.0mol/L of concentration of solution；Supersonic frequency is 30-40kHz.
Polyaniline-coated biology carbon material, KF, K in step (3)2CO3Mass ratio be 1:1:3.
It is anti-in catalytic transesterification that another embodiment of the present invention provides the carbon material supported alkali of above-mentioned polyaniline-coated biology
Application in answering.
Another embodiment of the present invention provides the carbon material supported alkali of above-mentioned polyaniline-coated biology and is preparing biodiesel
In application.
Another embodiment of the present invention provides a kind of preparation method of biodiesel, it is characterised in that including walking as follows
Suddenly：
(1) the deacidification processing of grease：Suitable sodium hydrate aqueous solution is added into grease, after stirring 0.5-1.0h, turns
Enter in separatory funnel, stratification, collect supernatant liquid, after 50-60 DEG C of water washing to neutrality, be added hexamethylene, with point
Hydrophone removes extra moisture, and finally vacuum distillation removes hexamethylene to get except acid lipid；
(2) after what will be obtained in step (1) removes acid lipid, methanol, catalyst mixing, 60-65 DEG C is heated under stirring, instead
After answering 3-4 hours, filtering or centrifugation recycling catalyst, remaining reaction solution is after being evaporated off methanol, stratification, on
Layer liquid is biodiesel, and lower layer is glycerine.
The preferred soybean oil of grease, palm oil, peanut oil, rapeseed oil or gutter oil described in step (1)；Sodium hydroxide is water-soluble
The volume ratio of a concentration of 0.2-0.3mol/L of liquid, grease and sodium hydrate aqueous solution is 4:1；The preferred grease body of hexamethylene volume
Long-pending 1/3-1/4；
Catalyst described in step (2) is selected from the carbon material supported alkali of the above-mentioned polyaniline-coated biology of the present invention, and dosage is
The 0.5-0.8% of deacidification oil quality, except the mass ratio of acid lipid and methanol is 1：8-10.
Another embodiment of the present invention provides the carbon material supported alkali of above-mentioned polyaniline-coated biology and is preparing fatty acid methyl
Application in ester.
Another embodiment of the present invention provides a kind of preparation method of fatty acid methyl ester, it is characterised in that including walking as follows
Suddenly：
After fatty acid glycerine fat, methanol, catalyst mixing, 60-65 DEG C is heated under stirring, after reacting 3-4 hours, mistake
Filter or centrifugation recycling catalyst, remaining reaction solution is after being evaporated off methanol, stratification, and supernatant liquid is fat
Sour methyl esters, lower layer are glycerine.
The catalyst is selected from the carbon material supported alkali of the above-mentioned polyaniline-coated biology of the present invention, and dosage is fatty acid glycerine
The mass ratio of the 0.5-0.8% of lipid amount, fatty acid glycerine fat and methanol is 1：8-10.
The preferred C16-C20 of the carbon chain lengths of aliphatic acid, fatty acid glycerine fat are further preferred in the fatty acid glycerine fat
Olein, tripalmitin；The olein is glyceryl monooleate, double oleins or three oleics
One or more of ester mixes；The tripalmitin is monopalmitin, double tripalmitins or three palms
One or more of acid glyceride mixes.
Compared with the prior art, the advantages of the present invention are as follows：(1) present invention makes polyaniline-coated give birth to by the method for ball milling
Object carbon material supported KF, K2CO3, a kind of novel solid body base is obtained, the solid base energy efficient catalytic grease (including fatty acid glycerine
Ester) ester exchange reaction occurs between methanol, prepare biodiesel；(2) polyaniline-coated biology of the present invention is carbon material supported
Base catalysis is efficient, easily separated, and can be recycled, and using 6 times, catalytic activity is basically unchanged.
Description of the drawings
Fig. 1 is nitrogen adsorption-desorption isotherm figure of product a；
Fig. 2 is the SEM figures of product A；
Fig. 3 is the SEM figures of product G.
Specific implementation mode
For the ease of a further understanding of the present invention, examples provided below has done more detailed description to it.But
It is that these embodiments are only not supposed to be a limitation to the present invention or implementation principle for being better understood from invention, reality of the invention
The mode of applying is not limited to the following contents.
Embodiment 1
(1) dry sweet potato leaves (400g) are taken, under nitrogen protection, are warming up to 600 degree, after being carbonized 6 hours, natural cooling
To room temperature, biological carbon material is obtained；
(2) the biological carbon material (10g) that step (1) obtains hydrochloric acid solution (1.0mol/L, 150mL) ultrasound is taken
After (30kHz) impregnates 5 hours, aniline (5mL) is added, under ice bath, ammonium persulfate solution (0.5mol/L, 100mL) is added, continues
10h is reacted under ice bath, filtering, washing of precipitate are drying to obtain polyaniline-coated biology carbon material (hereinafter referred to as product a).
Embodiment 2
(1) dry sweet potato leaves (400g) are taken, under nitrogen protection, are warming up to 700 degree, after being carbonized 5 hours, natural cooling
To room temperature, biological carbon material is obtained；
(2) the biological carbon material (10g) that step (1) obtains hydrochloric acid solution (2.0mol/L, 100mL) ultrasound is taken
After (40kHz) impregnates 4 hours, aniline (5mL) is added, under ice bath, ammonium persulfate solution (1.0mol/L, 75mL) is added, continues
6h is reacted under ice bath, filtering, washing of precipitate are drying to obtain polyaniline-coated biology carbon material (hereinafter referred to as product b).
Embodiment 3
Take product a (4g) and KF (4g), K2CO3(12g) mixing and ball milling is washed with water, absolute ethyl alcohol successively after 6 hours, in
It is dried in vacuo and is dried in vacuo for 24 hours up to the carbon material supported alkali (hereinafter referred to as product A) of polyaniline-coated biology under the conditions of 90 DEG C.
Embodiment 4
Take product b (3g) and KF (3g), K2CO3(9g) mixing and ball milling is washed with water, absolute ethyl alcohol successively after 6 hours, in
It is dried in vacuo and is dried in vacuo for 24 hours up to the carbon material supported alkali (hereinafter referred to as product B) of polyaniline-coated biology under the conditions of 90 DEG C.
Embodiment 5
Product a (4g) is taken after 6 hours, to be washed successively with water, absolute ethyl alcohol with KF (4g) mixing and ball milling, under the conditions of 90 DEG C
Vacuum drying is dried in vacuo to obtain the carbon material supported alkali (hereinafter referred to as products C) of polyaniline-coated biology for 24 hours.
Embodiment 6
Take product a (4g) and K2CO3(12g) mixing and ball milling is washed with water, absolute ethyl alcohol successively after 6 hours, in 90 DEG C of items
It is dried in vacuo under part and is dried in vacuo to obtain the carbon material supported alkali (hereinafter referred to as product D) of polyaniline-coated biology for 24 hours.
Embodiment 7
Take product a (4g) and KF (4g), K2CO3(4g) mixing and ball milling is washed with water, absolute ethyl alcohol successively after 6 hours, in
It is dried in vacuo under the conditions of 90 DEG C and is dried in vacuo to obtain the carbon material supported alkali (hereinafter referred to as product E) of polyaniline-coated biology for 24 hours.
Embodiment 8
Biological carbon material (4g) prepared by 1 step of Example (1) and KF (4g), K2CO3(12g) mixing and ball milling 6 hours
Afterwards, washed successively with water, absolute ethyl alcohol, be dried in vacuo under the conditions of 90 DEG C be dried in vacuo for 24 hours biological carbon material supported alkali (with
Lower abbreviation product F).
Embodiment 9
It takes product a (4g) to be added and contains KF (4g), K2CO3In the aqueous solution (200mL) of (12g), after stirring 24 hours, filtering,
Precipitation is washed with water, absolute ethyl alcohol successively, is dried in vacuo under the conditions of 90 DEG C and is dried in vacuo to obtain polyaniline-coated biology carbon materials for 24 hours
Material load alkali (hereinafter referred to as product G).
Embodiment 10
(1) the deacidification processing of grease：It takes soybean oil (60mL) that sodium hydrate aqueous solution (0.2mol/L, 15mL) is added, stirs
It after mixing 1.0h, is transferred in separatory funnel, stratification, collects supernatant liquid, after 50-55 DEG C of water washing to neutrality, be added
Hexamethylene (20mL), extra moisture is removed with water knockout drum, and finally vacuum distillation removes hexamethylene to get deacidification soybean oil；
(2) it after taking the deacidification soybean oil (20g) obtained in step (1), methanol (160g), product A (160mg) mixing, stirs
It mixes down and is heated to 65 DEG C, after reacting 3 hours, product A is recycled in centrifugation, and remaining reaction solution is quiet after methanol is evaporated off
Layering is set, supernatant liquid is biodiesel (faint yellow), and lower layer is glycerine；Pass through gas Chromatographic Determination, the production of biodiesel
Rate is 96.3%.
According to the method for step (2), the product A of 5 recycling is recycled, catalytic activity is basically unchanged, the 6th secondary pollutant
The yield of diesel oil remains to reach 91.0%.
Embodiment 11
(1) the deacidification processing of grease：It takes gutter oil (100mL) that sodium hydrate aqueous solution (0.3mol/L, 25mL) is added, stirs
It after mixing 0.5h, is transferred in separatory funnel, stratification, collects supernatant liquid, after 55-60 DEG C of water washing to neutrality, be added
Hexamethylene (25mL), extra moisture is removed with water knockout drum, and finally vacuum distillation removes hexamethylene to get deacidification gutter oil；
(2) it after taking the deacidification gutter oil (20g) obtained in step (1), methanol (200g), product B (100mg) mixing, stirs
It mixes down and is heated to 60 DEG C, after reacting 4 hours, product B is recycled in centrifugation, and remaining reaction solution is quiet after methanol is evaporated off
Layering is set, supernatant liquid is biodiesel (faint yellow), and lower layer is glycerine；Pass through gas Chromatographic Determination, the production of biodiesel
Rate is 94.3%；Recycle the product B of recycling, the yield of the 6th secondary pollutant diesel oil is up to 89.8%.
Embodiment 12
According to the operation in 10 step of embodiment (2), respectively with etc. quality product B-G substitute products A, biodiesel
Yield see the table below.
| Catalyst | Biodiesel production rate |
| Product B | 94.7% |
| Products C | 12.5% |
| Product D | 37.3% |
| Product E | 63.1% |
| Product F | 42.6% |
| Product G | 47.2% |
Embodiment 13
After taking olein (10g), methanol (80g), product A (80mg) mixing, 65 DEG C are heated under stirring, reaction
After 3 hours, centrifugation recycling product A, remaining reaction solution is after being evaporated off methanol, stratification, and supernatant liquid is
Biodiesel (faint yellow), lower layer are glycerine；By gas Chromatographic Determination, the yield of biodiesel is 95.6%.
Embodiment 14
After taking tripalmitin (10g), methanol (100g), product A (50mg) mixing, 60 DEG C are heated under stirring,
After reaction 4 hours, centrifugation recycling product B, remaining reaction solution is after being evaporated off methanol, stratification, supernatant liquid
As biodiesel (faint yellow), lower layer are glycerine；By gas Chromatographic Determination, the yield of biodiesel is 92.2%.
Claims (10)
1. a kind of preparation method of biodiesel, it is characterised in that include the following steps：
(1) the deacidification processing of grease：It is added suitable sodium hydrate aqueous solution into grease, after stirring 0.5-1.0h, is transferred to point
In liquid funnel, stratification collects supernatant liquid, after 50-60 DEG C of water washing to neutrality, hexamethylene is added, uses water knockout drum
Extra moisture is removed, finally vacuum distillation removes hexamethylene to get except acid lipid；
(2) it will obtain, except after acid lipid, methanol, catalyst mixing, 60-65 DEG C is heated under stirring, reacting 3- in step (1)
After 4 hours, filtering or centrifugation recycling catalyst, remaining reaction solution is after being evaporated off methanol, stratification, upper liquid
Body is biodiesel, and lower layer is glycerine.
2. preparation method described in claim 1, it is characterised in that the preferred soybean oil of grease, palm oil, flower described in step (1)
Oil generation, rapeseed oil or gutter oil；A concentration of 0.2-0.3mol/L of sodium hydrate aqueous solution, grease and sodium hydrate aqueous solution
Volume ratio is 4:1；The 1/3-1/4 of the preferred grease volume of hexamethylene volume.
3. claim 1-2 any one of them preparation methods, it is characterised in that catalyst described in step (2) is selected from polyaniline
The carbon material supported alkali of cladding biology, dosage is the 0.5-0.8% of deacidification oil quality, except the mass ratio of acid lipid and methanol is
1：8-10.
4. a kind of preparation method of fatty acid methyl ester, it is characterised in that include the following steps：
After fatty acid glycerine fat, methanol, catalyst mixing, be heated to 60-65 DEG C under stirring, after reaction 3-4 hour, filter or
Centrifugation recycling catalyst, remaining reaction solution is after being evaporated off methanol, stratification, and supernatant liquid is fatty acid methyl
Ester, lower layer are glycerine.
5. the preparation method described in claim 4, it is characterised in that the catalyst is negative selected from polyaniline-coated biology carbon material
Alkali is carried, dosage is the 0.5-0.8% of fatty acid glycerine fat quality, and the mass ratio of fatty acid glycerine fat and methanol is 1：8-10.
6. the preparation method described in claim 3,5, it is characterised in that the carbon material supported alkali of the polyaniline-coated biology is by such as
It is prepared by lower section method：
(1) dry sweet potato leaves are taken, under nitrogen protection, 600-700 degree is warming up to, after being carbonized 5-6 hours, naturally cools to room
Temperature obtains biological carbon material；
(2) after the biological carbon material hydrochloric acid solution ultrasound obtained step (1) is impregnated 4-5 hour, addition aniline, under ice bath,
Ammonium persulfate solution is added, 6-10h is reacted in continuation under ice bath, and filtering, is drying to obtain polyaniline-coated biological carbon at washing of precipitate
Material；
(3) the polyaniline-coated biology carbon material for obtaining step (2) and KF, K2CO3After mixing and ball milling 6 hours, successively use water,
Absolute ethyl alcohol washs, and is dried in vacuo and is dried in vacuo for 24 hours up to the carbon material supported alkali of polyaniline-coated biology under the conditions of 90 DEG C.
7. the preparation method described in claim 6, it is characterised in that the preferred 1.0- of concentration of hydrochloric acid described in step (2)
2.0mol/L, every gram of biological carbon materials'use 10-15mL hydrochloric acid solution, every gram of biological carbon materials'use aniline 0.5mL, every milliliter
Aniline uses 10-15mmol ammonium persulfates.
8. claim 6-7 any one of them preparation methods, it is characterised in that polyaniline-coated biology carbon materials in step (3)
Material, KF, K2CO3Mass ratio be 1:1:3.
9. claim 6-8 any one of them preparation methods, it is characterised in that ammonium persulfate solution is dense described in step (2)
Spend preferred 0.5-1.0mol/L.
10. claim 6-9 any one of them preparation methods, it is characterised in that supersonic frequency is 30-40kHz in step (2).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433180A (en) * | 2018-12-10 | 2019-03-08 | 扬州工业职业技术学院 | A kind of biological carbon load alkali and its application as catalyst |
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