CN104258882A - Preparation method of solid base catalyst - Google Patents

Preparation method of solid base catalyst Download PDF

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Publication number
CN104258882A
CN104258882A CN201410507094.1A CN201410507094A CN104258882A CN 104258882 A CN104258882 A CN 104258882A CN 201410507094 A CN201410507094 A CN 201410507094A CN 104258882 A CN104258882 A CN 104258882A
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solid base
preparation
cao
temperature
sio
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李彦峰
资燕
李嘉锡
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FOSHAN TIANSHENGLONG GREASE CHEMICAL Co Ltd
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FOSHAN TIANSHENGLONG GREASE CHEMICAL Co Ltd
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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
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

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Abstract

The invention relates to the technical field of biodiesel preparation and in particular relates to a preparation method of a solid base catalyst. The preparation method comprises the following steps: a. mixing Na2SiO3.9H2O, CaO and KF.2H2O in a mole ratio of 2.0 to 5.0 to (1.5-6.0) to form a mixture; b. grinding the mixture into paste; c. drying the paste at a temperature of 70-90 DEG C for 5-7 hours; d. baking the paste at a temperature of 350-400 DEG C for 3.5-4.5 hours, thus obtaining Na2SiO3/CaO/KF solid base. The method is simple and convenient in preparation, and the prepared solid base has good catalytic effects.

Description

A kind of preparation method of solid base catalyst
Technical field
The present invention relates to technical field of biodiesel preparation, refer more particularly to a kind of preparation method of solid base catalyst.
Background technology
Along with the day by day exhausted of global petroleum resources and social development are to the continuous increase of energy demand, energy shortage becomes worldwide problem.From the angle of energy strategy and environmental protection, countries in the world all in the research actively developing fossil fuel substitute, wherein with the research of biodiesel for current hotspot.Biodiesel has renewable, degradable, nontoxic, high-flash, high cetane number, the advantage such as environmentally friendly, has far-reaching economic benefit and social benefit to its development & application.Therefore, the research application of biodiesel has become the focus alleviating the energy and the environmental problem gone from bad to worse.According to the definition of American society association (ASTM); biodiesel (Biodiesel) refers to the Long carbon chain fatty-acid monoester produced for raw material with renewable biological source such as animal and plant fats, can be used for the clean alternative fuel of compression ignition engine; It is that the low-carbon alcohols such as grease and methyl alcohol carries out ester exchange reaction generation under the effect of the catalyst such as acid, alkali or enzyme.Biodiesel not only can directly use as fuel, and can use as the additive of petrochemical diesel fuel.For the biodiesel taking fatty acid methyl ester as representative, generally adopt homogeneous catalyst both at home and abroad at present, prepare fatty acid methyl ester as the catalysis greases such as sulfuric acid, NaOH, sodium methoxide carry out ester exchange and accomplish scale production.
Solid base refers to the solid that can give electronics to reactant.Should have extremely strong electron supplying capacity as its activated centre of catalyst, it has a surperficial anion vacancy, and namely free electron center is made up of surperficial O2-or O2-OH.Since the 1950's, solid base catalyst caused the attention of scientists, develop polytype catalyzed by solid base system.
The catalyst that solid base is prepared as state-of-the-art biodiesel, continues to study to develop the solid base with better catalytic effect it.
Summary of the invention
The object of the invention is to for the problems referred to above, provide a kind of preparation method of solid base catalyst, prepare easy, the catalyzed by solid base prepared is effective.
In order to achieve the above object, the present invention is by the following technical solutions:
A preparation method for solid base catalyst, comprising:
Step a: get Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:(1.5 ~ 6.0);
Step b: be ground to starchiness;
Step c: drying 5 ~ 7 hours at the temperature of 70 DEG C ~ 90 DEG C;
Steps d: bake and bank up with earth 3.5 ~ 4.5 hours at the temperature of 350 DEG C ~ 400 DEG C, obtain Na 2siO 3/ CaO/KF solid base.
Further, in step a, described Na 2siO 3.9H 2o, CaO and KF.2H 2the mol ratio of O is 2.0:1.0:1.5,2.0:1.0:3.0,2.0:1.0:4.5 or 2.0:1.0:6.
Further, in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:1.5.
Further, in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:3.0.
Further, in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:4.5.
Further, in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:6.0.
Further, in steps d, baking temperature is 300 DEG C or 400 DEG C.
The present invention adopts said method, prepares easy, and the catalyzed by solid base prepared is effective.
Detailed description of the invention
Following specific embodiment describes the present invention, but not as a limitation of the invention.
embodiment 1
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 45%.
embodiment 2
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:1.5; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 75%.
embodiment 3
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 90%.
embodiment 4
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:4.5; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 85%.
embodiment 5
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:6.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 80%.
embodiment 6
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 300 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 55%.
embodiment 7
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 350 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 80%.
embodiment 8
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 400 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 90%.
embodiment 9
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 450 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 78%.
embodiment 10
By Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:3.0; Be ground to starchiness; Drying 6 hours at the temperature of 80 DEG C; At the temperature of 500 DEG C, bake and bank up with earth 4 hours, obtain Na 2siO 3/ CaO/KF solid base.
Using ZnO/Ca (OH) the 2/KF solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the Na of alcohol oil mixture 4% 2siO 3/ CaO/KF solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 70%.
embodiment 11
Using the NaOH solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the NaOH solid base catalyst of alcohol oil mixture 4%, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 55%.
embodiment 12
Using the KOH solid base of preparation as catalyst, utilize preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the KOH solid base catalyst of alcohol oil mixture 4%, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 57%.
embodiment 13
By the NaOCH of preparation 3solid base, as catalyst, utilizes preparing biodiesel by ester exchange:
Alcohol oil is added reactor according to mol ratio 10:1, adds the NaOCH of alcohol oil mixture 4% 3solid base catalyst, react 0.5 hour at the temperature of 60 DEG C, after separating-purifying, the productive rate of biodiesel is 59%.
sum up
Experimentally can find out, Na 2siO 3/ CaO/KF, as catalyst, has more the activity of catalysis than other solid bases.The productive rate increasing biodiesel with the amount adding KF gradually increases sharply, and after being greater than certain numerical value, the productive rate of biodiesel becomes downward trend, and the productive rate of baking temperature on biodiesel has same impact.At Na 2siO 3.9H 2o, CaO and KF.2H 2the mol ratio of O mixture is 2.0:5.0:3.0, and during baking temperature 400 DEG C, the productive rate of biodiesel is the highest.But in actual production, KF addition and baking temperature also can affect other factors such as purification difficulty, so KF addition and baking temperature should be selected according to the actual requirements flexibly, so the application does not only protect optimum value, but protect suitable scope.
Below the present invention is described in detail, but obviously, those skilled in the art can carry out various changes and improvements, and not deviate from the scope of the present invention that appended claims limits.

Claims (7)

1. a preparation method for solid base catalyst, is characterized in that comprising:
Step a: get Na 2siO 3.9H 2o, CaO and KF.2H 2o is mixed into mixture, and its mol ratio is 2.0:5.0:(1.5 ~ 6.0);
Step b: be ground to starchiness;
Step c: drying 5 ~ 7 hours at the temperature of 70 DEG C ~ 90 DEG C;
Steps d: bake and bank up with earth 3.5 ~ 4.5 hours at the temperature of 350 DEG C ~ 400 DEG C, obtain Na 2siO 3/ CaO/KF solid base.
2. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in step a, described Na 2siO 3.9H 2o, CaO and KF.2H 2the mol ratio of O is 2.0:1.0:1.5,2.0:1.0:3.0,2.0:1.0:4.5 or 2.0:1.0:6.0.
3. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:1.5.
4. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:3.0.
5. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:4.5.
6. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in step a, described ZnO, Ca (OH) 2and KF2H 2the mol ratio of O is 2.0:1.0:6.0.
7. the preparation method of a kind of solid base catalyst according to claim 1, is characterized in that: in steps d, and baking temperature is 300 DEG C or 400 DEG C.
CN201410507094.1A 2014-09-28 2014-09-28 Preparation method of solid base catalyst Pending CN104258882A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103301857A (en) * 2013-06-21 2013-09-18 齐齐哈尔大学 Preparation method of ternary compound solid base catalyst and method for catalyzed synthesis of novel biodiesel thereof
CN103920481A (en) * 2014-04-18 2014-07-16 厦门大学 Compound solid base catalyst as well as preparation method and application thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103301857A (en) * 2013-06-21 2013-09-18 齐齐哈尔大学 Preparation method of ternary compound solid base catalyst and method for catalyzed synthesis of novel biodiesel thereof
CN103920481A (en) * 2014-04-18 2014-07-16 厦门大学 Compound solid base catalyst as well as preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FENGLAN FAN,ET AL: "Preparation of Na2SiO3/CaO/KF Catalyst for Biodiesel Synthesis", 《ASIAN JOURNAL OF CHEMISTRY》 *

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Application publication date: 20150107