CN102766487A - Liquid fuel and preparation method thereof - Google Patents
Liquid fuel and preparation method thereof Download PDFInfo
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- CN102766487A CN102766487A CN201210279404XA CN201210279404A CN102766487A CN 102766487 A CN102766487 A CN 102766487A CN 201210279404X A CN201210279404X A CN 201210279404XA CN 201210279404 A CN201210279404 A CN 201210279404A CN 102766487 A CN102766487 A CN 102766487A
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Abstract
The invention provides a liquid fuel which is an alcohol condensation product obtained by direct condensation of alcohol compounds. The invention further provides a method for preparing the liquid fuel. The method includes step one, proportionally weighting the alcohol compounds and catalytic agents, and mixing the alcohol compounds and the catalytic agents to obtain a mixture; and step two, subjecting the mixture obtained from the step one to condensation reaction for a period at the temperature between 120 DEG C and 350 DEG C under an airtight condition to obtain the alcohol condensation product. According to the liquid fuel and the preparation method thereof, the alcohol compounds can be used for directly preparing the high-quality liquid fuel, the reaction condition is mild, the production rate is high, the selectivity is high, the catalytic agents can be repeatedly used, the preparation process is simple and the operation is convenient. According to the technical scheme, a new way is provided for preparing the liquid fuel by using the alcohol compounds.
Description
Technical field
The present invention relates to the liquid fuel field, particularly a kind of liquid fuel and preparation method thereof.
Background technology
These fuel of use that do not add restriction along with the consumption and the people of fossil energy and the environmental problem that causes forces people to seek the energy of new reproducible cleaning.Biomass receive people's attention as a kind of reproducible energy.Research according to USDOE shows, to the year two thousand fifty, utilizes farming, woods, trade waste and plantation and utilizes biomass energy such as energy crop that the electric power in the world 60% and 40% fuel might be provided.Alcohol fuel is as the main renewable resources that comes from biomass, compares with gasoline to have a lot of advantages: Aalcohols fuel contains aerobic, is more conducive to sufficient combustion; The theoretical empty combustion of Aalcohols fuel can realize lean burn less than gasoline; The Aalcohols fuel octane value is high, and the capability of antidetonance is good.
Yet, cause its calorific value lower because the carbon atom number of alcohol such as ethanol is few.In order to obtain the liquid fuel of higher quality, the carbon atom number that increases fuel molecule is a kind of efficient and simple method.The approach of the growth carbochain of report mainly concentrates on the condensation coupling of aldehyde, ketone and acid at present.Because the existence of carbonyl makes the condensation ratio of aldehyde, ketone and acid be easier to carry out.Alcohol then is not easy condensation.In order to obtain more high-quality Aalcohols fuel, the method for seeking directly by the oxygenatedchemicals of the longer carbochain of alcohol compound preparation has important theory and realistic meaning.
Summary of the invention
In order to address the above problem, the objective of the invention is to propose a kind of liquid fuel.
Another object of the present invention is the method that proposes a kind of prepare liquid fuel.
To achieve these goals, the present invention proposes following solution:
A kind of liquid fuel, it is the alcohols condensation product that is obtained by the direct condensation of alcohol compound.
Said alcohols condensation product is the product of any one self the condensation gained in ethanol, propyl alcohol, butanols, amylalcohol, cyclopentanol, hexanol, the hexalin.
Further, the invention provides the method for the said liquid fuel of preparation, specifically comprise the steps:
(1) takes by weighing alcohol compound and catalyzer in proportion, and mix, get mixture;
(2) the said mixture of step (1) after condensation reaction for some time, obtains the alcohols condensation product under 120～350 ℃, air tight condition.
Preferably, the said condensation reaction time of step (2) is 1～24 hour.
With the hexalin is example, and reaction formula is following:
Said alcohol compound is primary alcohol or secondary alcohol.
Preferably, said primary alcohol or secondary alcohol are ethanol, propyl alcohol, butanols, amylalcohol, cyclopentanol, hexanol, hexalin.
Said catalyzer is the mixture of alkali and metal catalyst.
Preferably, said alkali is metal hydroxides, and said metal catalyst is Ru/C, Pd/C, Pt/C, Ru/ZrO
2, Ru/TiO
2, Pd/TiO
2, Pd/ZrO
2, Pt/TiO
2Or Pt/ZrO
2In one or more.
More preferably, said metal hydroxides is Lithium Hydroxide MonoHydrate, sodium hydroxide, Pottasium Hydroxide or calcium hydroxide.
The amount of catalyzer and the amount of alcohol compound can be arbitrary proportions, but the too small requirement meeting to reaction conditions such as temperature and time of the amount of catalyzer is than higher, and the amount of catalyzer is excessive can to increase cost again.
According to actual effect preferably, the amount of said alkali is not less than 1% of alcohol compound molar weight, and the amount of said metal catalyst is not less than 0.1% of alcohol compound quality.
More preferably, the amount of said alkali is 1～20% of an alcohol compound molar weight.The amount of said metal catalyst is 0.1 ~ 10% of an alcohol compound quality.
Beneficial effect of the present invention is following:
The present invention directly prepares high-quality liquid fuel by alcohol compound, and reaction conditions is gentle, and productive rate is high, selectivity is higher, and catalyzer can be reused, and preparation technology is simple, easy to operate.Technical scheme of the present invention provides a new way by the alcohol compound prepare liquid fuel.
Embodiment
For the ease of understanding, technical scheme of the present invention is specified below in conjunction with embodiment.The embodiment that describes below is an exemplary, does not limit protection scope of the present invention.
The used raw material of the present invention is all from chemical reagents corporation of traditional Chinese medicines group.
Embodiment 1
In reaction kettle, add the 100mmol hexalin, 20mmol sodium hydroxide, 0.1g 5wt% Ru/C, the 50ml normal hexane, 150 ℃ were reacted 20 hours.Concrete outcome is listed in table 1.
Embodiment 2
In reaction kettle, add the 100mmol hexalin, 20mmol calcium hydroxide, 1g 3wt% Pd/C, the 200ml normal hexane, 280 ℃ were reacted 4 hours.Concrete outcome is listed in table 1.
Embodiment 3
In reaction kettle, add the 100mmol hexalin, 20mmol Pottasium Hydroxide, 1g5wt%Pt/C, the 100ml normal hexane, 180 ℃ were reacted 12 hours.Concrete outcome is listed in table 1.
Embodiment 4
In reaction kettle, add 100mmol hexalin, 20mmol sodium hydroxide, 1g10wt%Pd/ZrO
2, the 50ml normal hexane, 240 ℃ were reacted 12 hours.Concrete outcome is listed in table 1.
Embodiment 5
In reaction kettle, add 100mmol hexalin, 20mmol sodium hydroxide, 1g5wt%Pd/TiO
2, the 80ml normal hexane, 260 ℃ were reacted 4 hours.Concrete outcome is listed in table 1.
Embodiment 6
In reaction kettle, add the 100mmol hexalin, 20mmol sodium hydroxide, 1g5wt%Pd/C, the 80ml normal hexane, 320 ℃ were reacted 2 hours.Concrete outcome is listed in table 1.
Embodiment 7
In reaction kettle, add the 100mmol hexalin, 1mmol sodium hydroxide, 0.1g1wt%Pd/C, the 80ml normal hexane, 320 ℃ were reacted 2 hours.Concrete outcome is listed in table 1.
Embodiment 8
In reaction kettle, add the 100mmol hexalin, 10mmol sodium hydroxide, 1g5wt%Pd/C, the 80ml normal hexane, 320 ℃ were reacted 2 hours.Concrete outcome is listed in table 1.
Embodiment 9
In reaction kettle, add the 100mmol Virahol, 20mmol sodium hydroxide, 1g5wt%Pd/C, the 100ml normal hexane, 140 ℃ were reacted 24 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 10
In reaction kettle, add the 100mmol isopropylcarbinol, the 20mmol Lithium Hydroxide MonoHydrate, 1g3wt%Pd/C, the 60ml normal hexane, 200 ℃ were reacted 8 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 11
In reaction kettle, add the 200mmol propyl carbinol, 40mmol sodium hydroxide, 2g5wt%Pd/C, the 120ml normal hexane, 160 ℃ were reacted 12 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 12
In reaction kettle, add the 200mmol cyclopentanol, 40mmol sodium hydroxide, 2g5wt%Pd/C, the 120ml normal hexane, 270 ℃ were reacted 4 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 13
In reaction kettle, add the 200mmol n-hexyl alcohol, 40mmol sodium hydroxide, 0.2g5wt%Pd/C, the 120ml normal hexane, 310 ℃ were reacted 20 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 14
In reaction kettle, add the 200mmol Pentyl alcohol, 40mmol sodium hydroxide, 1g5wt%Pd/C, the 120ml normal hexane, 300 ℃ were reacted 24 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Embodiment 15
In reaction kettle, add 200mmol ethanol, 40mmol sodium hydroxide, 2g 5wt%Pd/C, the 120ml normal hexane, 140 ℃ were reacted 24 hours, and reaction formula is following.Concrete outcome is listed in table 1.
Detected result relatively among each embodiment of table one
The foregoing description only is an instance character.For those skilled in the art, be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and sex change that scope of the present invention is accompanying claims and equivalent qualification thereof again to these embodiment.
Claims (10)
1. a liquid fuel is characterized in that, it is the alcohols condensation product that is obtained by the direct condensation of alcohol compound.
2. according to claims 1 described liquid fuel, it is characterized in that said alcohols condensation product is the product of any one self the condensation gained in ethanol, propyl alcohol, butanols, amylalcohol, cyclopentanol, hexanol, the hexalin.
3. according to claims 1 or 2 described liquid fuels, it is characterized in that said step of condensation is:
(1) takes by weighing alcohol compound and catalyzer in proportion, and mix, get mixture;
(2) the said mixture of step (1) after condensation reaction for some time, obtains the alcohols condensation product under 120～350 ℃, air tight condition.
4. the method for preparing any said liquid fuel of claim 1 ~ 3, this method comprises the steps:
(1) takes by weighing alcohol compound and catalyzer in proportion, and mix, get mixture;
(2) the said mixture of step (1) after condensation reaction for some time, obtains the alcohols condensation product under 120～350 ℃, air tight condition.
5. according to claims 4 described methods, it is characterized in that the said condensation reaction time of step (2) is 1～24 hour.
6. according to claims 4 described methods, it is characterized in that said alcohol compound is primary alcohol or secondary alcohol.
7. according to claims 6 described methods, it is characterized in that said primary alcohol or secondary alcohol are ethanol, propyl alcohol, butanols, amylalcohol, cyclopentanol, hexanol or hexalin.
8. according to claims 4 described methods, it is characterized in that said catalyzer is alkali and metal catalyst.
9. according to claims 8 described methods, it is characterized in that said alkali is metal hydroxides, said metal catalyst is Ru/C, Pd/C, Pt/C, Ru/ZrO
2, Ru/TiO
2, Pd/TiO
2, Pd/ZrO
2, Pt/TiO
2Or Pt/ZrO
2In one or more.
10. according to claims 8 described methods, it is characterized in that the amount of said alkali is not less than 1% of alcohol compound molar weight, the amount of said metal catalyst is not less than 0.1% of alcohol compound quality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210279404XA CN102766487A (en) | 2012-08-07 | 2012-08-07 | Liquid fuel and preparation method thereof |
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|---|---|---|---|
| CN201210279404XA CN102766487A (en) | 2012-08-07 | 2012-08-07 | Liquid fuel and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3514493A (en) * | 1966-05-18 | 1970-05-26 | Montedison Spa | Process for the dimerization of primary and secondary alcohols |
| US3860664A (en) * | 1973-06-06 | 1975-01-14 | Continental Oil Co | Process for condensation of alcohols |
| US5777183A (en) * | 1995-07-04 | 1998-07-07 | Henkel Kommanditgesellschaft Auf Aktien | Process for the production of Guerbet alcohols |
| CN1266418A (en) * | 1997-08-11 | 2000-09-13 | Rwe-Dea矿物油化学有限公司 | Method for producing metal-free guerbet alcohols |
| CN102020533A (en) * | 2009-09-18 | 2011-04-20 | 中国科学院兰州化学物理研究所 | Preparation method of guerbet alcohol |
-
2012
- 2012-08-07 CN CN201210279404XA patent/CN102766487A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3514493A (en) * | 1966-05-18 | 1970-05-26 | Montedison Spa | Process for the dimerization of primary and secondary alcohols |
| US3860664A (en) * | 1973-06-06 | 1975-01-14 | Continental Oil Co | Process for condensation of alcohols |
| US5777183A (en) * | 1995-07-04 | 1998-07-07 | Henkel Kommanditgesellschaft Auf Aktien | Process for the production of Guerbet alcohols |
| CN1266418A (en) * | 1997-08-11 | 2000-09-13 | Rwe-Dea矿物油化学有限公司 | Method for producing metal-free guerbet alcohols |
| CN102020533A (en) * | 2009-09-18 | 2011-04-20 | 中国科学院兰州化学物理研究所 | Preparation method of guerbet alcohol |
Non-Patent Citations (1)
| Title |
|---|
| 闫蒙钢等: "2010年美国总统绿色化学挑战奖获奖成果与启示", 《化学教育》, no. 2, 2 February 2011 (2011-02-02), pages 79 - 80 * |
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Application publication date: 20121107 |