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Catalytic system for hydrogenation of carbon dioxide and method for synthesizing n-butanol

A catalytic system, carbon dioxide technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve environmental pollution and other problems, achieve easy access to raw materials, and improve reactions Efficiency, good economical effect

Inactive Publication Date: 2019-06-21
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two methods will produce certain environmental pollution.

Method used

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  • Catalytic system for hydrogenation of carbon dioxide and method for synthesizing n-butanol
  • Catalytic system for hydrogenation of carbon dioxide and method for synthesizing n-butanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The present embodiment prepares n-butanol by the following method:

[0040] Add cobalt acetylacetonate, dirhodium tetracarbonyl dichloride, 1,1,1-tris(diphenylphosphinemethyl)ethane, lithium iodide and tetrahydrofuran solvent into a stainless steel reaction kettle with a volume of 50mL (built-in electromagnetic stirring Magneto), seal the reaction kettle, replace it with 2MPa carbon dioxide for 5 times, then fill it with 2MPa carbon dioxide, and then fill it with hydrogen, so that the partial pressure ratio of carbon dioxide and hydrogen is 1:3, and put the reaction kettle into the heating jacket , set the rotating speed to 600 r / min, raise the temperature, and react for 8 hours after reaching 180°C. After the reaction was over, the reactor was cooled, and then the gas was released. The liquid product was analyzed by gas chromatography.

[0041] Concrete catalyst consumption is as follows: cobalt catalyst 14mmol / L, rhodium catalyst 14mmol / L, organophosphine ligand 28m...

Embodiment 2

[0043] The present embodiment prepares n-butanol by the following method:

[0044] Add cobalt acetylacetonate, rhodium tetracarbonyl dichloride, 4-methylimidazole, lithium iodide synergistic catalyst and tetrahydrofuran solvent into a stainless steel reactor (built-in electromagnetic stirring magnet) with a volume of 50mL, seal the reactor, and use 2MPa carbon dioxide was replaced 5 times, then charged with 2MPa carbon dioxide, and then flushed with hydrogen, so that the partial pressure ratio of carbon dioxide and hydrogen was 1:3, and the reaction kettle was placed in the heating jacket, and the speed was set at 600 rpm. The temperature was raised to 180° C. and reacted for 8 hours. After the reaction was over, the reactor was cooled, and then the gas was released. Liquid and gaseous products were analyzed by gas chromatography.

[0045] Concrete catalyst consumption is as follows: cobalt catalyst 14mmol / L, rhodium catalyst 14mmol / L, organophosphine ligand 28mmol / L, iodide...

Embodiment 3

[0047] The present embodiment prepares n-butanol by the following method:

[0048] Add cobalt acetylacetonate, rhodium trichloride, 1,1,1-tris(diphenylphosphinemethyl)ethane, lithium iodide co-catalyst and tetrahydrofuran solvent into a stainless steel reaction vessel with a volume of 50mL (built-in electromagnetic stirring magnetic In the sub), seal the reactor, replace it with 2MPa carbon dioxide for 5 times, then fill it with 2MPa carbon dioxide, and then fill it with hydrogen, so that the partial pressure ratio of carbon dioxide and hydrogen is 1:3, and put the reactor into the heating jacket, Set the rotation speed to 600 rpm, and raise the temperature until it reaches 180°C and react for 8 hours. After the reaction was over, the reactor was cooled, and then the gas was released. The liquid product was analyzed by gas chromatography.

[0049] Concrete catalyst consumption is as follows: cobalt catalyst 14mmol / L, rhodium catalyst 7mmol / L, organic phosphine ligand 28mmol / ...

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Abstract

The invention provides a catalytic system for hydrogenation of carbon dioxide and a method for synthesizing n-butanol. The catalytic system comprises a compound containing transition metal elements, an organic ligand and an iodide cocatalyst. Compared with a single catalyst, the homogeneous catalytic system provided by the invention greatly improves reaction efficiency through a synergistic effectof the compound containing transition metal elements, the organic ligand and the iodide cocatalyst, can improve effect of hydrogenation of carbon dioxide, particularly the effect of preparing n-butanol by hydrogenation of carbon dioxide, has the advantages of low cost and readily available raw materials, can directly utilize carbon dioxide, has important significance for recycling carbon resources, and particularly provides an economical and feasible method for synthesizing n-butanol.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and relates to a catalytic system for carbon dioxide hydrogenation reaction and a method for synthesizing n-butanol. Background technique [0002] The use of fossil fuels (coal, oil and natural gas) has greatly promoted the progress of human civilization and the development of economic society. However, the combustion of fossil fuels leads to the concentration of carbon dioxide in the atmosphere reaching 400ppm (1ppm=1mg / L), especially the continuous increase in energy demand leads to the rapid increase of carbon dioxide in the atmosphere, which brings a series of serious environmental and social problems. It has attracted extensive attention of many scientific researchers at home and abroad. In addition, the existing fossil fuel reserves are limited, and human beings must face the problem of excessive carbon dioxide emissions in the atmosphere and the reduction of fossil fuel resourc...

Claims

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Application Information

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IPC IPC(8): B01J31/26B01J31/24B01J31/30C07C29/158C07C31/12
Inventor 王利国李嘉晨李会泉张婵娟刘佳驹贺鹏曹妍陈家强徐爽
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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