Catalyst for preparing butanol through ethanol coupling as well as preparation method and application of catalyst

A technology for preparing butanol and catalyst by ethanol coupling, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc. The effect of high conversion and excellent catalytic stability

Pending Publication Date: 2021-11-02
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metals such as Pd, Ni, and Cu are considered to be good catalysts for dehydrogenation and hydrogenation, but the characteristics of catalysts such as easy sintering and deactivation limit their further application.

Method used

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  • Catalyst for preparing butanol through ethanol coupling as well as preparation method and application of catalyst
  • Catalyst for preparing butanol through ethanol coupling as well as preparation method and application of catalyst
  • Catalyst for preparing butanol through ethanol coupling as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of Supported Catalysts by Co-precipitation

[0035] Take Ni(NO 3 ) 2 ·6H 2 O 61.1g, Al(NO 3 ) 3 9H 2 O 26.2g (Ni / Al molar ratio is 3:1), Cu(NO 3 ) 2 ·6H 2 Add 2.07g of O into a 1000mL beaker, then add 200mL of deionized water and stir to dissolve to form solution A. Take NaOH0.438mol, NaOH 2 CO 3 Add 0.113mol into another beaker, add 200mL deionized water and stir to dissolve to form solution B. Under stirring in a water bath at 70°C, solution A was added dropwise into solution B at a rate of 5 mL / min with a constant flow pump, and 1M Na 2 CO 3 The pH value of the solution was adjusted to about 10, and then aged at this pH and temperature for 24 hours. After aging, the obtained suspension was repeatedly suction-filtered and washed with a large amount of deionized water until the pH value of the solution was 7, and then the filter cake was dried at 80° C. for 12 hours. Then it was raised from room temperature to 300°C at 5°C / min in air, and fir...

Embodiment 2

[0037] Preparation of Supported Catalysts by Deposition and Precipitation

[0038] Take Ni(NO 3 ) 2 ·6H 2 O 61.1g, Al(NO 3 ) 3 9H 2 Add 26.2g of O (Ni / Al molar ratio is 3:1) into a 1000mL beaker, then add 200mL of deionized water and stir to dissolve to form solution A. Take NaOH 0.438mol, Na 2 CO 3 Add 0.113mol into another beaker, add 200mL deionized water and stir to dissolve to form solution B. Under stirring in a water bath at 75°C, solution A was added dropwise into solution B at a rate of 5 mL / min with a constant flow pump, and 1M Na 2 CO 3 The pH value of the solution was adjusted to about 10, and then aged at this pH and temperature for 20 h. After aging, the obtained suspension was repeatedly suction-filtered and washed with a large amount of deionized water until the pH value of the solution was 7, and then the filter cake was dried at 120° C. for 8 hours to obtain a nickel-aluminum precursor. 0.2gCu(NO 3 ) 2 ·3H 2 The O solid was dissolved in 100 mL ...

Embodiment 3

[0040] Preparation of Supported Catalysts with Different Molar Ratio of Ni and Al by Co-precipitation

[0041] The difference from Example 1 is that Ni(NO 3 ) 2 ·6H 2 The amount of O was 40.7g, and the other steps and reagent amounts were the same as in Example 1, so the Ni / Al molar ratio in the catalyst thus obtained was 2:1.

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PUM

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Abstract

The invention discloses a catalyst for preparing butanol through ethanol coupling, the active component of the catalyst is a CuNiAl composite oxide, the content of Cu is 0.1-20 wt%, the content of Ni is 25-65 wt%, the content of Al is 5-35 wt%, and the molar ratio of Ni to Al is 3: 1-1: 3; the catalyst is prepared by adopting a coprecipitation method or a deposition precipitation method, a metal salt of copper and nickel-aluminum precursor solutions with different molar ratios are mixed, an obtained mixed solution is aged under the condition that the temperature and pH are controlled, and the catalyst is obtained through washing, drying, roasting and grinding treatment. The invention also discloses a preparation method and application of the compound. The invention provides an efficient, stable and cheap catalyst for preparing butanol through ethanol coupling, and high activity, high selectivity and stability of the catalyst are realized under mild reaction conditions.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a catalyst for producing butanol through ethanol coupling, a preparation method and application thereof. Background technique [0002] Butanol is a very important organic solvent and chemical raw material, mainly used in the synthesis of n-butyl ester plasticizers of phthalic acid, aliphatic dibasic acid and phosphoric acid, and widely used in various plastic and rubber products , It is also the raw material for the preparation of butyraldehyde, butyric acid, butylamine and butyl lactate in organic synthesis. In addition, butanol is an excellent engine fuel. Unlike other alcohol fuels, butanol can be used as a complete substitute for gasoline, that is, it can be used directly without modification of existing engines. At present, the development of butanol as a new type of automobile fuel has attracted widespread attention of researchers, because compared with ethanol, butanol ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C07C29/34C07C31/12
CPCB01J23/755B01J23/002C07C29/34B01J2523/00C07C31/12B01J2523/17B01J2523/31B01J2523/847
Inventor 谭媛李洁丁云杰
Owner ZHEJIANG NORMAL UNIVERSITY
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