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Catalyst for synthesis of ethanol from synthetic gas, preparation method and application thereof

A catalyst, synthesis gas technology, applied in the preparation of organic compounds, heterogeneous catalyst chemical elements, physical/chemical process catalysts, etc. , the effect of simple preparation process

Active Publication Date: 2017-03-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] From the above research results, it is found that in the existing synthetic ethanol catalysts, most of the modification of Cu-based catalysts adopts FT synthesis components Fe and Co, and the alcohol distribution in the product conforms to the ASF distribution, the carbon chain distribution is wide, and there are alcohols. The selectivity (especially ethanol) is low, the composition of the product is complex, etc.
Most catalysts are prepared by co-precipitation method, which is affected by factors such as solution concentration, precipitation temperature, pH value, aging time and roasting conditions, resulting in very complicated preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Weigh 1.6g Cu(NO 3 ) 2 ·3H 2 O, using ethanol as a solvent, prepare 0.02M copper nitrate solution. Weigh 30g γ-Al 2 o 3 As a carrier, it was added to the prepared copper nitrate solution, ultrasonically impregnated at room temperature for 1 hour, dried at 100°C for 16 hours, and calcined in a muffle furnace at 400°C for 6 hours to obtain CuO / γ-Al 2 o 3 catalyst.

[0032] 2) Weigh 18.3g Zr(NO 3 ) 4 ·5H 2O, use water as solvent, prepare 0.02M zirconium nitrate solution, add CuO / γ-Al prepared above 2 o 3 Catalyst, ultrasonic impregnation for 1h, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hours in a muffle furnace to obtain ZrO 2 -CuO / γ-Al 2 o 3 catalyst.

[0033] 3) Weigh 0.6g K 2 CO 3 , using water as a solvent, prepare the 0.02M potassium carbonate solution, add the ZrO prepared above 2 -CuO / γ-Al 2 o 3 Catalyst, ultrasonic impregnation for 1 hour, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hours in a muffle furn...

Embodiment 2

[0036] 1) Weigh 25.2g Cu(NO 3 ) 2 ·3H 2 O, use citric acid aqueous solution as solvent, prepare 0.09M copper nitrate solution. Weigh 30g γ-Al 2 o 3 As a carrier, it was added to the prepared copper nitrate solution, ultrasonically impregnated at room temperature for 1 hour, dried at 100°C for 16 hours, and calcined in a muffle furnace at 400°C for 6 hours to obtain CuO / γ-Al 2 o 3 catalyst.

[0037] 2) Weigh 8.2g Zr(NO 3 ) 4 ·5H 2 O, use water as solvent, prepare 0.09M zirconium nitrate solution, add CuO / γ-Al prepared above 2 o 3 Catalyst, ultrasonic impregnation for 1h, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hours in a muffle furnace to obtain ZrO 2 -CuO / γ-Al 2 o 3 catalyst.

[0038] 3) Weigh 3.15g K 2 CO 3 , using water as a solvent, prepare the 0.09M potassium carbonate solution, add the ZrO prepared above 2 -CuO / γ-Al 2 o 3 Catalyst, ultrasonic impregnation for 1 hour, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hou...

Embodiment 3

[0041] 1) Weigh 11.8g Cu(NO 3 ) 2 ·3H 2 O, 0.05M copper nitrate solution was prepared with urea aqueous solution as solvent. Weigh 30g γ-Al 2 o 3 As a carrier, it was added to the prepared copper nitrate solution, ultrasonically impregnated at room temperature for 1 hour, dried at 100°C for 16 hours, and calcined in a muffle furnace at 400°C for 6 hours to obtain CuO / γ-Al 2 o 3 catalyst.

[0042] 2) Weigh 13.6g Zr(NO 3 ) 4 ·5H 2 O, use water as solvent, prepare 0.05M zirconium nitrate solution, add CuO / γ-Al prepared above 2 o 3 Catalyst, ultrasonic impregnation for 1h, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hours in a muffle furnace to obtain ZrO 2 -CuO / γ-Al 2 o 3 catalyst.

[0043] 3) Weigh 1.7g K 2 CO 3 , using water as a solvent, prepare the 0.05M potassium carbonate solution, add the ZrO prepared above 2 -CuO / γ-Al 2 o 3 Catalyst, ultrasonic impregnation for 1 hour, drying at 100°C for 16 hours, and calcination at 1300°C for 3 hours...

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PUM

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Abstract

The invention relates to a catalyst for synthesis of ethanol from synthetic gas. The catalyst includes the following components by weight percentage: 1.0-20.0% of copper oxide, 5.0-15.0% of zirconia, 1.0-6.0% of potassium oxide, and 60.0-90.0% of a carrier. The catalyst and the method provided by the invention have the advantages of high selectivity, simple preparation process and mild operation process conditions.

Description

technical field [0001] The invention relates to a catalyst for synthesizing ethanol and its preparation method and application, in particular to a catalyst for directional synthesis of ethanol from synthesis gas, its preparation method and application. Background technique [0002] Ethanol has a wide range of uses and can be used as a solvent, thinner and disinfectant, and is widely used in medicine, paint, sanitary products, cosmetics, oil and other industries. Ethanol can be used as an organic chemical raw material to manufacture acetaldehyde, ether, ethyl acetate, acetic acid, chloroacetic acid, etc., and to derive many intermediates of medicines, dyes, pesticides and other products. In addition, ethanol is a traditional energy substitute with great application potential. It is a high-quality liquid fuel with low sulfur and ash content and less harm to the human body; after adding a certain amount of ethanol to gasoline , the oxygen content of the mixed fuel increases, a...

Claims

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Application Information

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IPC IPC(8): B01J23/78C07C29/154C07C31/08
CPCB01J23/002B01J23/78B01J2523/00C07C29/154B01J2523/13B01J2523/17B01J2523/31B01J2523/48C07C31/08
Inventor 谭猗生李小丽解红娟武应全张涛宋法恩
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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