CN113668002A - Method for preparing acetone from formic acid - Google Patents
Method for preparing acetone from formic acid Download PDFInfo
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- CN113668002A CN113668002A CN202110930397.4A CN202110930397A CN113668002A CN 113668002 A CN113668002 A CN 113668002A CN 202110930397 A CN202110930397 A CN 202110930397A CN 113668002 A CN113668002 A CN 113668002A
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- formic acid
- acetone
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- preparing
- ethanol
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/01—Products
- C25B3/07—Oxygen containing compounds
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/25—Reduction
Abstract
The invention discloses a method for preparing acetone by using formic acid, which is 0.1-0.7 mol.L‑1Formic acid solution is used as electrolyte, metal lead sheet is used as cathode, inert material is used as anode, and the cathode electrolysis voltage relative to saturated calomel electrode is-1.4 to-1.7Vvs.SCECarrying out electrolysis; the method electrochemically reduces formic acid into acetone and ethanol, has the characteristics of simple equipment, small occupied area, simple process, convenient operation and the like, and has better theoretical and practical significance in preparing C3 organic matters from C1 organic matters.
Description
Technical Field
The invention relates to the technical field of organic chemical preparation, in particular to an electrochemical method for preparing acetone by formic acid.
Background
Formic acid, also known as formic acid, has the molecular formula HCOOH. Formic acid is colorless and smelly liquid, is an important basic chemical raw material, is an intermediate of chemical reaction and a renewable energy carrier, and is widely applied to industries such as pesticides, leather, dyes, medicines, rubber and the like. Formic acid is a C1 organic substance, the preparation method is relatively simple and easy, and the industrial preparation mainly comprises a sodium formate method, a methanol oxo synthesis method (also called a methyl formate method), a formamide method and the like.
Acetone, also known as dimethyl ketone, of the formula CH3COCH3The simplest saturated ketone is a colorless transparent liquid with a special pungent smell. Is easy to dissolve in water and organic solvents such as methanol, ethanol, ether, chloroform, pyridine and the like, is inflammable and volatile, and has active chemical properties. Acetone is a C3 organic substance, is an important organic synthetic raw material, is used for producing epoxy resin, polycarbonate, organic glass, medicines, pesticides and the like, is an important raw material for producing acetic anhydride, diacetone alcohol, chloroform, iodoform, epoxy resin, polyisoprene rubber, methyl methacrylate and the like, and is also an excellent solvent, a diluent, a cleaning agent, an extracting agent and the like. The production method of acetone mainly comprises a cumene method, an isopropanol method, a fermentation method, an acetylene hydration method, a propylene direct oxidation method and the like, and at present, the industrial production of acetone mainly comprises the cumene method.
The electrochemical method has the advantages of simple equipment, small occupied area, normal operation at room temperature, convenient operation, changeable production scale, few byproducts, high product selectivity and the like, and is widely applied to organic chemical industry, but at present, no method for preparing acetone by the electrochemical method by taking formic acid as a substrate reactant exists.
Disclosure of Invention
In order to solve the defects in the prior art, the inventor provides an electrochemical method for preparing acetone by formic acid, and the electrochemical method has the characteristics of simple process, convenient operation and high selectivity of acetone and ethanol products.
Specifically, the invention provides a method for preparing acetone by using formic acid, which takes the formic acid as a substrate reactant and prepares the acetone by an electrochemical method, the formic acid is electrochemically reduced into acetone and/or ethanol, and the reaction generated by a cathode is as follows:
3HCOOH+10H++10e-→CH3COCH3+5H2O。
0.1 to 0.7 mol.L-1Formic acid solution is used as electrolyte, metal lead sheet is used as cathode, inert material is used as anode, and the cathode electrolysis voltage relative to saturated calomel electrode is-1.4 to-1.7Vvs.SCEElectrolysis is carried out. Wherein, the size of the cathode and the anode is determined according to the actual requirement.
Further, the inert material is a metal platinum sheet or a graphite plate.
The invention provides a method for preparing acetone by an electrochemical method by taking formic acid as a substrate reactant, which electrochemically reduces the formic acid into acetone and ethanol, and every 3mol of formic acid can react to generate 1mol of acetone, so that the method has the advantages of simple process, convenient operation and small occupied area, and has better theoretical and practical significance in the aspect of preparing C3 organic matters from C1 organic matters.
Detailed Description
The present invention will be described in further detail by way of examples.
Example 1
0.1 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm multiplied by 4cm as a cathode, a platinum sheet of 3cm multiplied by 4cm as an anode, a saturated calomel electrode as a reference electrode, and electrolytic voltage of-1.6V at the cathodevs.SCEAfter 10 hours of electrolysis, the faradic efficiency of the product acetone is 5.47 percent, and no ethanol is produced as a byproduct.
Example 2
0.3 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm multiplied by 4cm as a cathode, a platinum sheet of 3cm multiplied by 4cm as an anode, a saturated calomel electrode as a reference electrode, and electrolytic voltage of-1.6V at the cathodevs.SCEAfter 10 hours of electrolysis, the faradaic efficiency of the product acetone is 9.60 percent, and the faradaic efficiency of the byproduct ethanol is 0.90 percent.
Example 3
0.7 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm × 4cm as a cathode, a platinum sheet of 3cm × 4cm as an anode, and a saturated calomel electrode as a reference electrode. Electrolytic voltage at cathode is-1.6Vvs.SCEAfter 10 hours of electrolysis, the faradaic efficiency of the product acetone is 2.18 percent, and the faradaic efficiency of the byproduct ethanol is 2.12 percent.
Example 4
0.3 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm × 4cm as a cathode, a platinum sheet of 3cm × 4cm as an anode, and a saturated calomel electrode as a reference electrode. Electrolytic voltage at cathode-1.4Vvs.SCEElectrolyzing for 10 hours to obtain the product acetoneThe faradaic efficiency of (a) was 4.77%, and the faradaic efficiency of the by-product ethanol was 1.80%.
Example 5
0.3 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm × 4cm as a cathode, a platinum sheet of 3cm × 4cm as an anode, and a saturated calomel electrode as a reference electrode. Electrolytic voltage at cathode-1.7Vvs.SCEAfter 10 hours of electrolysis, the faradaic efficiency of the product acetone is 2.55 percent, and the faradaic efficiency of the byproduct ethanol is 0.18 percent.
Example 6
0.3 mol.L is added into a 150mL electrolytic cell-1100mL of HCOOH solution, a lead sheet of 3cm × 4cm as a cathode, a platinum sheet of 3cm × 4cm as an anode, and a saturated calomel electrode as a reference electrode. Electrolytic voltage at cathode is-1.6Vvs.SCEAfter 7 hours of electrolysis, the faradaic efficiency of the product acetone is 7.36 percent, and the faradaic efficiency of the byproduct ethanol is 2.74 percent.
Claims (3)
1. A method for preparing acetone by using formic acid is characterized in that: the method for preparing acetone by an electrochemical method by taking formic acid as a substrate reactant is used for electrochemically reducing the formic acid into acetone and/or ethanol, and the reaction generated by a cathode is as follows:
3HCOOH+10H++10e-→CH3COCH3+5H2O。
2. the method of claim 1, wherein the concentration is in the range of 0.1 to 0.7 mol-L-1Formic acid solution is used as electrolyte, metal lead sheet is used as cathode, inert material is used as anode, and the cathode electrolysis voltage relative to saturated calomel electrode is-1.4 to-1.7Vvs.SCEElectrolysis is carried out.
3. The method of claim 1, wherein the inert material is a metallic platinum sheet or a graphite plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110930397.4A CN113668002B (en) | 2021-08-13 | 2021-08-13 | Method for preparing acetone by using formic acid |
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| CN202110930397.4A CN113668002B (en) | 2021-08-13 | 2021-08-13 | Method for preparing acetone by using formic acid |
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| CN113668002A true CN113668002A (en) | 2021-11-19 |
| CN113668002B CN113668002B (en) | 2023-04-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015147990A (en) * | 2014-02-07 | 2015-08-20 | 日立化成株式会社 | Electrode, method of producing electrode, electrochemical reduction method and method of producing electrochemical reduction product |
| CN106498437A (en) * | 2015-09-07 | 2017-03-15 | 中国科学院大连化学物理研究所 | A kind of Carbon dioxide electrochemical reduction electrode preparation method |
| CN111254456A (en) * | 2020-03-31 | 2020-06-09 | 青岛科技大学 | Electrochemical synthesis method of 2-nitro-4-methylsulfonylbenzoic acid |
| CN112760674A (en) * | 2020-12-24 | 2021-05-07 | 山东师范大学 | System and method for synthesizing ammonia and acetone in one step by electrochemical reduction at normal temperature and normal pressure |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015147990A (en) * | 2014-02-07 | 2015-08-20 | 日立化成株式会社 | Electrode, method of producing electrode, electrochemical reduction method and method of producing electrochemical reduction product |
| CN106498437A (en) * | 2015-09-07 | 2017-03-15 | 中国科学院大连化学物理研究所 | A kind of Carbon dioxide electrochemical reduction electrode preparation method |
| CN111254456A (en) * | 2020-03-31 | 2020-06-09 | 青岛科技大学 | Electrochemical synthesis method of 2-nitro-4-methylsulfonylbenzoic acid |
| CN112760674A (en) * | 2020-12-24 | 2021-05-07 | 山东师范大学 | System and method for synthesizing ammonia and acetone in one step by electrochemical reduction at normal temperature and normal pressure |
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| CN113668002B (en) | 2023-04-11 |
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