Unraveling the Homologation Reaction Sequence of the Zeolite-Catalyzed Ethanol-to-Hydrocarbons Process.
作者： Abhishek Dutta Chowdhury , Alessandra Lucini Paioni , Gareth T. Whiting , Donglong Fu , Marc Baldus
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摘要: Although industrialized, the mechanism for catalytic upgrading of bioethanol over solid-acid catalysts (that is, ethanol-to-hydrocarbons (ETH) reaction) has not yet been fully resolved. Moreover, mechanistic understanding ETH reaction relies heavily on its well-known "sister-reaction" methanol-to-hydrocarbons (MTH) process. However, MTH process possesses a C1 -entity reactant and cannot, therefore, shed any light homologation sequence. The deactivation zeolite H-ZSM-5-catalyzed was elucidated using combination complementary solid-state NMR operando UV/Vis diffuse reflectance spectroscopy, coupled with on-line mass spectrometry. This approach establishes existence sequence through analysis pattern identified reactive deactivated species. Furthermore, in contrast to process, deficiency olefinic-hydrocarbon pool species olefin cycle) during is also noted.
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