Disclosed is a process for the production of higher aldehydes from lower alcohols using a two-stage vapor phase heterogeneous catalyst system. Ethanol feeds afford aldehydes such as butyraldehyde and crotonaldehyde while butanol feeds yield 2-ethylhexanal and 2-ethylhexenal. Higher product selectivities are obtained when the alcohol is first dehydrogenated in the upper catalyst stage followed by aldol condensation of the resulting lower aldehyde to a higher aldehyde.
本发明揭示了一种利用两阶段蒸汽相异质催化剂系统从低级醇中生产高级醛的方法。
乙醇提供
丁醛和顺
丁烯醛等
醛类,而
丁醇提供
2-乙基己醛和2-乙基
己烯醛。当醇首先在上层催化剂阶段脱氢,然后将产生的低级醛进行醛缩合成为高级醛时,可以获得更高的产物选择性。