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A method for synthesizing ethanol and higher alcohols thereof by hydrogenation reaction of carbon dioxide

A technology for hydrogenation reaction and carbon dioxide, applied in catalytic reactions, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of high reaction temperature, low selectivity and low activity of fixed bed catalysts , to achieve the effect of excellent cycle performance, selectivity and activity unity

Active Publication Date: 2017-02-01
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, the reaction temperature of fixed bed catalyst is high and the activity is low, C 2+ Alcohol selectivity is low
The homogeneous catalysts that have been reported, its C 2+ Alcohol selectivity among total alcohols is also lower (26.4%)

Method used

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  • A method for synthesizing ethanol and higher alcohols thereof by hydrogenation reaction of carbon dioxide
  • A method for synthesizing ethanol and higher alcohols thereof by hydrogenation reaction of carbon dioxide
  • A method for synthesizing ethanol and higher alcohols thereof by hydrogenation reaction of carbon dioxide

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Experimental program
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Embodiment 1

[0028] Embodiment 1, utilize catalytic system to catalyze the hydrogenation reaction of carbon dioxide to synthesize ethanol and its higher alcohols:

[0029] The ruthenium complex and the rhodium complex catalyst, the iodide additive and the solvent are added into a 16mL stainless steel reaction kettle with a polytetrafluoroethylene liner (a built-in electromagnetic stirring magnet), the reaction kettle is sealed, and a 3MPa The carbon dioxide gas was replaced three times. At room temperature, carbon dioxide and hydrogen were respectively charged into the reactor, and the reactor was placed in an air bath at a constant temperature, and the electromagnetic stirrer was set at 800 rpm for the reaction. After the reaction, the reactor was placed in an ice-water bath, and the gas was released. Wherein, the liquid product and the reacted gas are analyzed by gas chromatography respectively.

[0030] Concrete reaction conditions are as follows: ruthenium complex catalyst 14.1mmol / L,...

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PUM

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Abstract

The invention discloses a method for synthesis of ethanol and higher alcohol by carbon dioxide hydrogenation. The method comprises that in the presence of ruthenium complex and rhodium complex catalysts, an iodide cocatalyst and a solvent, carbon dioxide and hydrogen undergo a hydrogenation reaction to produce ethanol and its higher alcohol. The method creatively utilizes synergism of the ruthenium complex, the rhodium complex and the iodide and realizes unification of catalyst stability, selectivity and activity. The catalysts have excellent recycling performances and lay a solid foundation for industrial development. The catalysis system can effectively catalyze a carbon dioxide hydrogenation reaction so that synthesis of ethanol and its higher alcohol is realized. The method provides an important and practical approach for carbon dioxide chemical fixation and recycling.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and in particular relates to a method for synthesizing ethanol and higher alcohols thereof by hydrogenation reaction of carbon dioxide. Background technique [0002] Carbon dioxide is a rich, clean, non-toxic, and recyclable carbon resource. Utilizing carbon dioxide and converting it into chemical products with high added value not only provides cheap and easy-to-obtain raw materials for the C1 chemical industry, but also opens up an extremely It is an important non-petroleum raw material chemical route, and it is also of great significance in reducing the global greenhouse effect. Due to the low-energy state of carbon dioxide thermodynamics, energy is the basis for its conversion and utilization; in addition, the inertness of carbon dioxide molecular dynamics determines that the conversion reaction of carbon dioxide must be activated effectively, and the key to activating carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/158C07C31/08C07C31/10C07C31/12C07C31/125B01J31/26
CPCB01J31/26B01J2231/625B01J2531/821B01J2531/822C07C29/158C07C31/08C07C31/10C07C31/12C07C31/125
Inventor 钱庆利韩布兴崔萌何珍红吴从意朱庆宫张兆富马珺杨冠英张静静
Owner INST OF CHEM CHINESE ACAD OF SCI
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