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Carbon dioxide-synthesized methanol catalyst and preparation method thereof

A technology for synthesizing methanol and carbon dioxide, which is applied in the direction of catalyst activation/preparation, hydroxyl compound preparation, organic compound preparation, etc. It can solve the problems of low selectivity, short life, poor thermal stability, etc., and achieve high conversion rate and long service life Effect

Active Publication Date: 2009-08-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on catalyst preparation mainly focuses on the optimization and improvement of the preparation method and process. Excellent low temperature activity and thermal stability, prolong catalyst life

Method used

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  • Carbon dioxide-synthesized methanol catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Weigh 13.59gCu(NO 3 ) 2 ·3H 2 O, 21.10gZn(NO 3 ) 2 ·6H 2 O, dissolved in 250ml deionized water, the solution is recorded as A solution, and Na 2 CO 3 26.52g was dissolved in 500ml deionized water, the solution was recorded as B solution, and 3.7g Al(NO 3 ) 3 9H 2 O, 1.1gZr(NO 3 ) 4 ·5H 2 O was dissolved in 50ml of deionized water, and the solution was recorded as solution C; take 100ml of solution B and solution C under stirring conditions, and co-precipitate in parallel at 65°C to obtain the precipitation solution (1), and mix solution A and solution B under stirring conditions , 65 ° C and flow into the precipitation solution (1) to co-precipitate until the complete precipitation of liquid A and titration is completed. During the precipitation process, the pH is controlled at 7-8. The precipitation is stirred for 20 minutes, then left to stand, aged at room temperature for 1 hour, and suction filtered. Wash with deionized water until the effluent from the ...

Embodiment 2

[0021] Weigh 13.59gCu(NO 3 ) 2 ·3H 2 O, 21.10gZn(NO 3 ) 2 ·6H 2 O, 0.28gMn(CH 3 COO) 2 ·5H 2 O was dissolved in 250ml deionized water, the solution was recorded as A solution, and Na was weighed 2 CO 3 26.52g was dissolved in 500ml deionized water, the solution was recorded as B solution, and 3.7g Al(NO 3 ) 3 9H 2 O, 1.1gZr(NO 3 ) 4 ·5H 2 O was dissolved in 50ml of deionized water, and the solution was recorded as solution C; take 100ml of solution B and solution C under stirring conditions, and co-precipitate in parallel at 65°C to obtain the precipitation solution (1), and mix solution A and solution B under stirring conditions , 65 ° C and flow into the precipitation solution (1) to co-precipitate, until the A solution is completely precipitated and titrated, the pH is controlled at 7 to 8 during the precipitation process, the precipitate is stirred for 20 minutes, then left to stand, aged at room temperature for 1 hour, and filtered. Wash with deionized wate...

Embodiment 3

[0023] Weigh 13.59gCu(NO 3 ) 2 ·3H 2 O, 21.10gZn(NO 3 ) 2 ·6H 2 O, 0.11gAgNO 3 Dissolve in 250ml deionized water, and record the solution as A solution; weigh Na 2 CO 3 26.52g was dissolved in 500ml deionized water, the solution was recorded as B solution, and 3.7g Al(NO 3 ) 3 9H 2 O, 1.1gZr(NO 3 ) 4 ·5H 2 O was dissolved in 50ml of deionized water, and the solution was recorded as solution C. Take 100ml of solution B and solution C under stirring conditions, and co-precipitate in parallel at 65°C to obtain the precipitation solution (1). Combine solution A and solution B under stirring conditions , 65 ° C and flow into the precipitation solution (1) to co-precipitate, until the A solution is completely precipitated and titrated, the pH is controlled at 7 to 8 during the precipitation process, the precipitate is stirred for 20 minutes, then stood still, aged at room temperature for 1 hour, and filtered. Wash with deionized water until the effluent from the lower e...

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Abstract

A carbon dioxide-synthesized methanol catalyst and a preparation method thereof are disclosed, belonging to the technical field of catalyst. The invention is characterized in that the carbon dioxide-synthesized methanol catalyst has the molar ratio of components of Ci to Zn to Al to Zr to M being 45 to 45 to 10 to 5 to 2, wherein M is MnO, CeO2, Ag2O, Fe2O3, La2O3, and is prepared by stepped co-deposition. The preparation steps are that: (1) a mixed liquid of aluminum nitrate solution and zirconium nitrate solution is in concurrent flow and co-deposition with carbonate solution to prepare a carrier precursor; (2) copper-zinc M mixed nitrate is in concurrent flow and co-deposition with the carbonate solution and added into (1), and then the synthesized methanol catalyst is prepared by aging, filtering, drying and roasting. The inventive effect and benefit are that the prepared catalyst is excellent in activity and thermal resistance and can effectively decompose carbon dioxide with high one-step conversion rate, therefore, the invention provides an effective catalyst for synthesizing methanol by hydrogenising the carbon dioxide.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and relates to a carbon dioxide hydrogenation methanol catalyst and a preparation method. Background technique [0002] Methanol is an important organic chemical raw material and the basic substance of Cl chemistry. There are hundreds of chemical products produced from methanol, and it is also an important substitute clean fuel. With the change of energy structure, methanol has a candidate for future fuel Fuel is called. [0003] The industrialization of CO hydrogenation to methanol began in 1923. The German BASF company first successfully developed a zinc-chromium catalyst with low activity. In order to obtain higher catalytic activity and conversion rate, the operating temperature is between 590-670K and the operating pressure is 25 ~35MPa, so it is called a high-pressure catalyst. CO 2 and H 2 As early as 1927, the Peoria plant of the American Industrial Solvent Company used CuO / ZnO / Cr t...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J23/83B01J23/89B01J23/889B01J37/03C07C29/154C07C29/156C07C31/04
CPCY02P20/52
Inventor 张永春黄树鹏
Owner DALIAN UNIV OF TECH
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