Catalyst for oxidation of ethanol in acetone

 

(57) Abstract:

Usage: catalytic chemistry, in particular the production of catalysts for the oxidation of ethanol in acetone. The inventive catalyst contains zinc oxide 96,5 8 - 97,9 wt. % BF ZnO, cerium oxide 2,1 - 3,42 wt. % BF CeO2. The catalyst was prepared by mixing a solution of cerium oxide in water with a solution of zinc oxide in ammonium hydroxide. The resulting slurry is dried and calcined. table 2.

The invention can be used to produce acetone valuable product of the petrochemical industry.

The invention relates to the creation of new highly active catalyst for the conversion of ethanol in acetone.

Acetone, as it is known, is obtained from isopropyl alcohol. And only in recent years began to appear to receive the acetone directly from ethanol.

Known catalysts get acetone from ethanol, including zincoxide, micaceous iron, calcitonine [1-3]

Closest to the invention to the technical essence and the achieved result is the obtaining of acetone ethanol in the catalyst composition of Fe2O3:CaO1:1 [2] this catalyst at 450aboutWith the release of acetone SOS the plants is the catalyst, providing a higher activity and selectivity in the conversion of ethanol in acetone.

This object is achieved by the conversion of ethanol in Zn-Se-oxide catalyst having the atomic ratio of Zn:Ce:O 9:0,1:(9,2 0,02), the content of the following oxides in wt. ZnO 97,71; CeO22,29.

The use of this catalyst allows you to achieve 100% degree of conversion of ethanol in 73% yield of acetone.

This catalyst allows to increase the output of acetone compared to the prototype.

Thus, the distinguishing feature of the invention is that developed a new catalyst process for the conversion of ethanol in acetone.

When conducting a patent search in the literature was not found using the specified catalyst in the conversion of ethanol in acetone, allowing the applicant to consider the proposed catalyst of this process meets the criterion of invention "a new catalyst".

Below are examples illustrating the invention.

In all examples, the conversion of ethanol in acetone was studied under the following conditions: volumetric feed rate of the reactants 780 0 h-1the ratio ethanol: 2 C.

P R I m e R 1. The process of making ethanol spend on Zn-Ce-oxide catalyst containing oxides, ZnO 97,71% SEO2to 2.29%

The catalyst was prepared as follows. 24,31 g ZnO is dissolved in 150 ml of NH4OH, 0,57 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.

P R I m m e R 2. The conversion of ethanol spend on Zn-Ce-oxide catalyst containing oxides, ZnO 97,43; CEO2to 2.57.

The catalyst was prepared as follows. 24,24 g ZnO is dissolved in 150 ml of NH4OH, 0.64 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.

P R I m e R 3. Ethanol transform on Zn-Ce-oxide catalyst containing oxides, ZnO 97,9; CEO22,1.

For the preparation of the catalyst 24,37 g ZnO is dissolved in 150 ml of NH4OH, 0.52 g CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEOaboutWith, then 4 h at 550aboutC.

P R I m e R 4. The conversion of ethanol was carried out on Zn-Ce-oxide catalyst with a composition of oxides, ZnO 98,83, CEO21,17.

of 24.6 g of ZnO is dissolved in 150 ml of NH4OH; 0.29 grams SEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.

P R I m e R 5. Ethanol was turned on Zn-Ce-oxide catalyst containing oxides, ZnO 96,58; CEO23,42.

24,0 g ZnO is dissolved in 150 ml of NH4OH, 0,85, CEO2dissolved in 20 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4OH. The resulting suspension is dried at 110aboutWith and calcined 2 hours at 300aboutWith, then 4 h at 550aboutC.

P R I m e R 6. The conversion of ethanol was carried out on Zn-Ce-oxide catalyst containing oxides, ZnO 79,73; CEO220,27.

For the preparation of the catalyst of 20.1 g of ZnO is dissolved in 150 ml of NH4OH, 5,11 g CEO2dissolved in 50 ml of distilled water. Then with stirring, a solution SEO2water added to a solution of ZnO in NH4

The results of the test images of the catalyst are presented in table. 1.

In table. 2 examples (7-11) test Zn-Ce-oxide catalyst composition, ZnO 97,71; CEO22,29, in the temperature range of the process 400 to 500aboutC. Other process conditions are the same as in the examples presented in table. 1.

Thus, from the examples show that the zinc-cerium oxide catalyst with a content of ZnO 97,71% SEO2to 2.29% provides output acetone to 73% conversion of ethanol to 100% when the process temperature is 480aboutC.

CATALYST FOR oxidation of ETHANOL IN ACETONE-based metal oxide, characterized in that as the oxides of the metals it contains zinc oxide and cerium oxide in the following content, wt.%:

Zinc oxide - 96,58 - 97,9

The cerium oxide - 2,1 - 3,42

 

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