CN105670806A - Production method of Armeniaca sibirica biodiesel - Google Patents
Production method of Armeniaca sibirica biodiesel Download PDFInfo
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- CN105670806A CN105670806A CN201610027383.0A CN201610027383A CN105670806A CN 105670806 A CN105670806 A CN 105670806A CN 201610027383 A CN201610027383 A CN 201610027383A CN 105670806 A CN105670806 A CN 105670806A
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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
- 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
- B01J23/745—Iron
-
- 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
- C11B3/10—Refining fats or fatty oils by adsorption
-
- 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
-
- 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/542—Adsorption of impurities during preparation or upgrading of a fuel
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a production method of Armeniaca sibirica biodiesel. The method comprises the following steps: adding an active aluminum oxide adsorbent, and carrying out pretreatment for Armeniaca sibirica kernel oil in order to obtain pure Armeniaca sibirica kernel oil; adding pure Armeniaca sibirica kernel oil, methanol and a magnetic nano-catalyst according to a weight ratio 100:30-40:1.2-1.5 into a reaction vessel in order to carry out an esterification reaction; and separating a biodiesel crude product and carrying out purification in order to obtain the biodiesel. The magnetic nano-catalyst is introduced into the esterification reaction with high catalysis efficiency and substantial catalysis effects, reaction time is shortened, and yield of biodiesel is increased; on the other hand, the magnetic nano-catalyst can be conveniently and rapidly separated and recycled by means of an exterior magnetic field, and multitime cycle and utilization are carried out. The method also has the advantages of simple preparation technology, energy saving, environmental protection, short reaction time, high yield, high product purity, etc.; the method has good social efficiency, ecological benefits, and economic benefits; large scale and industrial production are easy to realize.
Description
Technical field
The present invention relates to biomass energy technology field, the production method of especially a kind of ansu apricot biofuel.
Background technology
It is day by day outstanding that current global demand of petroleum constantly increases the contradiction gradually exhausted with fossil energy order; energy resource supply situation is more and more nervous; world market crude oil price continues to sharp rise; the diversification of the energy, renewableization and cleaningization have become the inevitable choice of human social development; exploitation biomass energy is one of direction solving global energy crisis, and the biofuel as novel substitute energy is rapid in countries in the world development. Biofuel refers to the reproducibility diesel oil fuel of the replaced petrifaction diesel made by transesterify or thermochemical processes for stock oil with oil crops such as soybean, rape, cotton, palm etc., the waterplant grease such as Wild oil plant and engineering microalgae and animal grease, food garbage oil etc.
Biofuel has the performance advantage of following uniqueness: (1) bioenergy is renewable performance: as renewable energy source, different from prospective oil, it is obtained by agricultural and Biological resources, can supply can not be exhausted, and the biological degradability of biofuel is higher than conventional diesel oil, biological degradation can be realized under natural situation, reduce the pollution to environment for human survival. (2) there is excellent environmental protection characteristic: be mainly manifested in owing in biofuel, sulphur content is low so that the discharge of sulfurous gas and sulfide is low; Not containing the aromatic series alkane that can be polluted by environment in biofuel, thus human body is damaged lower than diesel oil by waste gas. (3) good lubricity, makes the abrasion of oil injection pump, engine cylinder-body and connecting rod reduce, it may also be useful to the life-span is long. (4) good fuel performance: biofuel cetane value height so that it is incendivity is better than diesel oil, combustion residue is that subacidity makes extend the work-ing life of catalyzer and engine motor oil. (5) raw material sources preparing biofuel are more extensive: comprise oil crops, Wild oil plant and alga plant grease and animal grease can as raw material, it is even possible that utilize the waste oil in catering trade, sewer oil as raw material, it is possible to accomplish the advantages such as the object that recovery rubbish is turned waste into wealth.
China is the relatively poor countries of petroleum resources; but woody oleiferous plants resource and abundant; along with the research to energy woody oleiferous plants crop, the deepening continuously of development and utilization; biomass energy is huge in China's development potentiality; development woody oleiferous plants biofuel industry is not only conducive to solving oil replacement, ecological environmental protection and agriculture, rural areas and farmers problem, also can be as China's forestry industry brings new development opportunity. Ansu apricot (Armeniacasibirica (L.) Lam), rose order, the Rosaceae, apricot platymiscium, another name apricot, wild apricot. Its strong adaptability, happiness light, well developed root system, gos deep into underground, has cold-resistant, drought-enduring, barren-resistant feature. Mainly it is distributed in the ground such as China Dark Longjiang, Jilin, Liaoning, the Inner Mongol, Gansu, Hebei, Shanxi. In ansu apricot, fatty acid oil composition comprises nutmeg acid, palmitinic acid, Zoomeric acid, stearic acid, oleic acid, linolic acid, linolenic acid and 20 carbonic acid etc., wherein, the content sum of palmitinic acid, Zoomeric acid, stearic acid, oleic acid, linoleic acid plus linolenic acid is up to 95%, and almond oil length is about 50%, it is the woody biofuel species being worthy to be popularized and planting. Wild almond is utilized to prepare the main method of biofuel for ester-interchange method at present, but traditional ester-interchange method mostly exists, and catalytic efficiency is low, output is low, color and luster is dark, easily rotten, long reaction time, etching apparatus, complex process, temperature of reaction height, energy consumption more greatly, easily cause the shortcomings such as secondary pollution and by product lose, cost is higher.
Summary of the invention
The present invention is directed to tradition ester-interchange method production biofuel Problems existing, it is provided that the production method of a kind of ansu apricot biofuel. The present invention take magnetic nano solid acid as catalyzer, not only not etching apparatus, moreover it is possible to improve catalytic efficiency significantly, can Reaction time shorten and reduce energy consumption etc.
For realizing above object, the present invention is achieved through the following technical solutions:
A production method for ansu apricot biofuel, comprises the following steps:
1. raw materials pretreatment: add the activated alumina adsorbents that weight ratio is 0.8-1.2% in mountain almond oil, stir 10-15min under rotating speed is 200-300r/min, pure mountain almond oil can be obtained;
2. esterification: be that 100:30-40:1.2-1.5 adds in reactor taking weight ratio by pure mountain almond oil, methyl alcohol and magnetic nano-catalyst, temperature be 55-65 DEG C, under stirring velocity is 120-200r/min, carry out esterification 20-40min, obtain esterification products;
3. separating bio diesel oil crude product: by esterification products centrifugal 8-15min under rotating speed is 500-1000r/min, after leaving standstill precipitation, is separated upper liquid with subnatant, and upper liquid is biofuel crude product, and lower floor is glycerine;
4. purification biofuel: biofuel crude product obtained above is added to agitator, add with the mixed adsorbent of wilkinite and polyvinyl lactam composition again, its add-on is the 1.5-2.5% of biofuel crude product weight, under rotating speed 150-180r/min, stir 5-8min, biodiesel oil product can be obtained.
The above magnetic nano-catalyst comprises B2O3-Fe3O4、ZrO2-Fe3O4And Al2O3-Fe3O4。
The mixed adsorbent of the above wilkinite and polyvinyl lactam composition is made up of 25-30% wilkinite and 70-75% polyvinyl lactam.
Compared with prior art, the advantage of the present invention and useful effect:
1, the present invention utilizes renewable resources mountain almond oil to prepare biofuel, can effectively solve current global energy crisis and problem of environmental pollution, the biofuel of production not only quality obtain bigger raising, product rate can be promoted to about 90%.
2, magnetic nano-catalyst is incorporated in the production of biofuel by the present invention, wherein magnetic nano-catalyst has the features such as reaction interface is big, surface-area is big, resistance to mass transfer is little, reaction conditions is gentle, activity is high, activity stability is good, catalytic efficiency height, catalytic effect are remarkable in the esterification reaction to make it, thus the product rate of Reaction time shorten and raising biofuel. Magnetic nano-catalyst can facilitate according to external magnetic field on the other hand, it is isolated fast, reclaims, can recycled for multiple times, overcome that non magnetic nanocatalyst difficulty reclaims, shortcoming that cost is high, to alleviation environmental pollution, improve enterprise's production benefit, realize resources circulation and efficiently utilize significant.
3, the present invention adopts absorption method purification biofuel, simple to operate, cost is low, can effectively solve that power consumption is big and " three wastes " emission problem; Select the mixture of wilkinite and polyvinyl lactam composition as sorbent material, it is possible not only to adsorb very well the impurity such as the free acid of biofuel, methyl alcohol, glycerine, glyceride, also there is good dehydrating effect simultaneously, it is possible to overcome that biofuel color and luster is dark, perishable and conventional distillation method exists the problems such as complex process, power consumption are big, long reaction time.
4, mountain almond oil was first carried out pre-treatment with activated alumina by the present invention before esterification, it is possible to the impurity of absorption mountain almond oil and part free acid so that the soap that esterification reaction process produces is few, alleviates the difficulty of follow-up refining coarse biodiesel.
5, the inventive method has that preparation technology is simple, catalytic efficiency height, product rate height, product purity advantages of higher, has good social efficiency and economic benefit, it is easy to realize mass-producing, industrialization produces.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but is not limited to protection scope of the present invention.
Embodiment 1
The present embodiment magnetic nano-catalyst used is B2O3-Fe3O4. Its preparation method comprises the following steps:
A. magnetic Fe3O4The preparation of Nano microsphere: be the FeCl of 1:2 by mass ratio2And FeCl3Being dissolved in distilled water water, lead to into nitrogen, stir under 300r/min rotating speed, dropwise adding ammoniacal liquor to pH value is 12; Again control temperature be 60 DEG C, rotating speed be 100r/min, stir 1h, after reaction, be cooled to room temperature, utilize magnetite adsorption to collect Fe3O4Particulate, cleans to neutral with distilled water, and vacuum-drying 3h at temperature is 70 DEG C, obtains magnetic Fe3O4Nano microsphere, the particle diameter of microballoon is 58nm.
b.B2O3-Fe3O4The preparation of magnetic nano-catalyst: be that the magnetic Fe_3O_4 Nano microsphere of 1:8 and Boron Nitride solution add to ultrasonic stirrer by mass ratio; adding with magnetic Fe_3O_4 Nano microsphere mass ratio again is the ethanol of 1:20; it is at 300r/min, temperature are 50 DEG C at rotating speed; dropwise adding ammoniacal liquor to pH is 12, and after ultrasonic agitation 3h, the product of gained is through Magneto separate; 6 times are cleaned again with distilled water; being 70 DEG C of dry 8h with microwave, finally roasting 2h under 500 DEG C and nitrogen protection, can obtain B2O3-Fe3O4Magnetic nano-catalyst.
A production method for ansu apricot biofuel, comprises the following steps:
1. raw materials pretreatment: add the activated alumina adsorbents that weight is 0.8kg in mountain almond oil, stir 15min under rotating speed is 200r/min, pure mountain almond oil can be obtained;
2. esterification: be that 100:30:1.5 adds in reactor taking weight ratio by pure mountain almond oil, methyl alcohol and magnetic nano-catalyst, is 55 DEG C in temperature, under stirring velocity is 200r/min, carries out esterification 20min, obtain esterification products;
3. separating bio diesel oil crude product: by esterification products centrifugal 15min under rotating speed is 600r/min, after leaving standstill precipitation, is separated upper liquid with subnatant, and upper liquid is biofuel crude product, and lower floor is glycerine;
4. purification biofuel: biofuel crude product obtained above is added to agitator, add 25% again with the mixed adsorbent 1.5kg of wilkinite and 75% polyvinyl lactam composition, under rotating speed 150r/min, stir 8min, 93.64kg biodiesel oil product can be obtained.
Embodiment 2
The present embodiment magnetic nano-catalyst used is ZrO2-Fe3O4. Its preparation method comprises the following steps:
A. magnetic Fe3O4The preparation of Nano microsphere: be the FeCl of 1:3 by mass ratio2And FeCl3Being dissolved in distilled water water, lead to into nitrogen, stir under 800r/min rotating speed, dropwise adding ammoniacal liquor to pH value is 11; Again control temperature be 78 DEG C, rotating speed be 250r/min, stir 1.5h, after reaction, be cooled to room temperature, utilize magnetite adsorption to collect Fe3O4Particulate, cleans to neutral with distilled water, and vacuum-drying 2h at temperature is 80 DEG C, obtains magnetic Fe3O4Nano microsphere, the particle diameter of microballoon is 45nm.
b.ZrO2-Fe3O4The preparation of magnetic nano-catalyst: be that the magnetic Fe_3O_4 Nano microsphere of 1:12 and zirconium nitrate solution add to ultrasonic stirrer by mass ratio, then add and magnetic Fe3O4Nano microsphere mass ratio is the ethanol of 1:25; it is at 400r/min, temperature are 63 DEG C at rotating speed; dropwise adding ammoniacal liquor to pH is 11; after ultrasonic agitation 3.5h; the product of gained is through Magneto separate, then cleans 7 times with distilled water, is 65 DEG C of dry 5h with microwave; finally roasting 2h under 400 DEG C and nitrogen protection, can obtain .ZrO2-Fe3O4Magnetic nano-catalyst. A production method for ansu apricot biofuel, comprises the following steps:
1. raw materials pretreatment: add the activated alumina adsorbents that weight is 1.0kg in mountain almond oil, stir 12min under rotating speed is 250r/min, pure mountain almond oil can be obtained;
2. esterification: be that 100:35:1.3 adds in reactor taking weight ratio by pure mountain almond oil, methyl alcohol and magnetic nano-catalyst, is 60 DEG C in temperature, under stirring velocity is 160r/min, carries out esterification 30min, obtain esterification products;
3. separating bio diesel oil crude product: by esterification products centrifugal 12min under rotating speed is 700r/min, after leaving standstill precipitation, is separated upper liquid with subnatant, and upper liquid is biofuel crude product, and lower floor is glycerine;
4. purification biofuel: biofuel crude product obtained above is added to agitator, add 28% again with the mixed adsorbent 2.0kg of wilkinite and 72% polyvinyl lactam composition, under rotating speed 160r/min, stir 6min, 92.67kg biodiesel oil product can be obtained.
Embodiment 3
The present embodiment magnetic nano-catalyst used is Al2O3-Fe3O4. Its preparation method comprises the following steps:
A. magnetic Fe3O4The preparation of Nano microsphere: be the FeCl of 1:2.5 by mass ratio2And FeCl3Being dissolved in distilled water water, lead to into nitrogen, stir under 500r/min rotating speed, dropwise adding ammoniacal liquor to pH value is 12; Again control temperature be 70 DEG C, rotating speed be 150r/min, stir 1h, after reaction, be cooled to room temperature, utilize magnetite adsorption to collect Fe3O4Particulate, cleans to neutral with distilled water, and vacuum-drying 2h at temperature is 75 DEG C, obtains magnetic Fe3O4Nano microsphere, the particle diameter of microballoon is 51nm.
b.Al2O3-Fe3O4The preparation of magnetic nano-catalyst: be the magnetic Fe of 1:10 by mass ratio3O4Nano microsphere and alum liquor add to ultrasonic stirrer, then add and magnetic Fe3O4Nano microsphere mass ratio is the ethanol of 1:40; it is at 300r/min, temperature are 60 DEG C at rotating speed; dropwise adding ammoniacal liquor to pH is 12; after ultrasonic agitation 4h; the product of gained is through Magneto separate, then cleans 6 times with distilled water, is 70 DEG C of dry 6h with microwave; finally roasting 3h under 450 DEG C and nitrogen protection, can obtain Al2O3-Fe3O4Magnetic nano-catalyst.
A production method for ansu apricot biofuel, comprises the following steps:
1. raw materials pretreatment: add the activated alumina adsorbents that weight is 1.2kg in mountain almond oil, stir 10min under rotating speed is 300r/min, pure mountain almond oil can be obtained;
2. esterification: be that 100:40:1.2 adds in reactor taking weight ratio by pure mountain almond oil, methyl alcohol and magnetic nano-catalyst, is 65 DEG C in temperature, under stirring velocity is 120r/min, carries out esterification 40min, obtain esterification products;
3. separating bio diesel oil crude product: by esterification products centrifugal 9min under rotating speed is 900r/min, after leaving standstill precipitation, is separated upper liquid with subnatant, and upper liquid is biofuel crude product, and lower floor is glycerine;
4. purification biofuel: biofuel crude product obtained above is added to agitator, add 30% again with the mixed adsorbent 2.3kg of wilkinite and 70% polyvinyl lactam composition, under rotating speed 170r/min, stir 5min, 91.97kg biodiesel oil product can be obtained.
Claims (3)
1. the production method of an ansu apricot biofuel, it is characterised in that, comprise the following steps:
(1) raw materials pretreatment
Mountain almond oil adds the activated alumina adsorbents that weight ratio is 0.8-1.2%, under rotating speed is 200-300r/min, stirs 10-15min, pure mountain almond oil can be obtained;
(2) esterification
It is that 100:30-40:1.2-1.5 adds in reactor taking weight ratio by pure mountain almond oil, methyl alcohol and magnetic nano-catalyst, it is 55-65 DEG C in temperature, under stirring velocity is 120-200r/min, carries out esterification 20-40min, obtain esterification products;
(3) separating bio diesel oil crude product
By esterification products centrifugal 8-15min under rotating speed is 500-1000r/min, after leaving standstill precipitation, upper liquid being separated with subnatant, upper liquid is biofuel crude product, and lower floor is glycerine;
(4) purification biofuel
Biofuel crude product obtained above is added to agitator, add with the mixed adsorbent of wilkinite and polyvinyl lactam composition again, its add-on is the 1.5-2.5% of biofuel crude product weight, stirs 5-8min under rotating speed 150-180r/min, can obtain biodiesel oil product.
2. the production method of a kind of ansu apricot biofuel according to claim 1, it is characterised in that: described magnetic nano-catalyst comprises B2O3-Fe3O4、ZrO2-Fe3O4And Al2O3-Fe3O4。
3. the production method of a kind of ansu apricot biofuel according to claim 1 or 2, it is characterised in that: the mixed adsorbent of described wilkinite and polyvinyl lactam composition is made up of 25-30% wilkinite and 70-75% polyvinyl lactam.
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2016
- 2016-01-15 CN CN201610027383.0A patent/CN105670806A/en active Pending
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| CN1891787A (en) * | 2005-07-07 | 2007-01-10 | 南昌大学 | Production technology for preparing biodiesel by solid magnetic catalyst |
| CN101492603A (en) * | 2008-01-23 | 2009-07-29 | 华中农业大学 | Method for producing biodiesel by using tallowseed oil and special solid catalyst thereof |
| CN101812378A (en) * | 2010-03-08 | 2010-08-25 | 中山大学 | Biodiesel and preparation method thereof |
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Application publication date: 20160615 |