Reductive Amination of 1-Hydroxy-2-propanone Over Nickel and Copper Catalysts.
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| Title: | Reductive Amination of 1-Hydroxy-2-propanone Over Nickel and Copper Catalysts. |
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| Authors: | Trégner, T.1, Trejbal, J.1 jiri.trejbal@vscht.cz, Ruhswurmová, N.1, Zapletal, M.1 |
| Source: | Chemical & Biochemical Engineering Quarterly. 2017, Vol. 31 Issue 4, p455-470. 16p. |
| Subjects: | Amination, Hydroxypropanone, Nickel catalysts, Copper catalysts, Ammonia, Propanolamines |
| Abstract: | The one-step reductive amination of 1-hydroxy-2-propanone (acetol) with ammonia to 2-aminopropanol (2-APOL) over commercial nickel and copper catalysts has been studied in the continuous fixed-bed reactor at the temperature from 130 to 220 °C and different molar ratios of reactants. It was found that the optimal molar ratios of H2/acetol and H2/NH3 regarding the selectivity of 2-APOL were 25 and 1, respectively. The highest selectivity of approx. 45 % to desired 2-APOL at total conversion of acetol was achieved in the presence of the nickel catalyst. Major by-products of amination were cis and trans isomers of 2,5- and 2,6-dimethylpiperazines. Mechanism of the formation of these and other detected and/or potential by-products is discussed. So far, unpublished mass spectra of identified by-products, such as N-substituted dimethylpiperazines or various aminoalcohols, are reported in this paper. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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