FIELD: chemistry.
SUBSTANCE: invention relates to an improved method for combined production of N-methylcyclohexylamine and dicyclohexylamine. The method involves catalytic alkylation of cyclohexylamine with methanol at 160-200°C in gas phase in a flow reactor in a hydrogen current on a copper-zinc-chromium-aluminium catalyst, followed by extraction of products via fractionation. Dicyclohexylamine is first added to the starting mixture in molar ratio cyclohexylamine : methanol : dicyclohexylamine of 1:(1-2):1.
EFFECT: method increases output of N-methylcyclohexylamine.
13 ex, 1 tbl
| Title | Year | Author | Number |
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| N-METHYLCYCLOHEXYLAMINE AND DICYCLOHEXYLAMINE COPRODUCTION METHOD | 2007 |
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RU2344120C1 |
| METHOD FOR SELECTIVE PRODUCTION OF N-METHYL-PARA-ANISIDINE | 2012 |
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RU2508288C1 |
| METHOD OF PRODUCING DICYCLOHEXYLAMINE FROM CYCLOHEXYLAMINE | 2009 |
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| METHOD FOR SELECTIVE PRODUCTION OF N-METHYL-PARA-ANISIDINE | 2011 |
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RU2472774C1 |
| METHOD OF PRODUCING CYCLOALKYLAMINES | 2010 |
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| METHOD FOR SELECTIVE PRODUCTION OF N-METHYL-PARA-PHENETIDINE | 2011 |
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RU2471771C1 |
| METHOD FOR PREPARING N-METHYLANILINE | 2004 |
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RU2270187C2 |
| COPPER-CHROMIUM-ZINC CATALYST FOR HETEROGENEOUS REACTIONS | 2014 |
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RU2555842C1 |
| METHOD FOR PREPARING N-METHYLANILINE | 2003 |
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RU2223258C1 |
| ANTIDETONATING ADDITIVE ON THE BASIS OF MIXTURE OF METHYLATED TOLUIDINES AND METHOD OF SELECTIVE RECEIVING OF MIXTURE OF N-METHYL-TOLUIDINES | 2015 |
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RU2659221C2 |
