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Hydrodeoxygenation of raw bio-oil towards platform chemicals over FeMoP/zeolite catalysts
Idoia Hita,Tomás Cordero-Lanzac,Giuseppe Bonura,Catia Cannilla,José M. Arandes,Francesco Frusteri,Javier Bilbao 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
The hydrodeoxygenation of raw bio-oil was investigated in a continuousfixed bed reactor over a series ofFeMoP/zeolite catalysts, pursuing a maximized and stable production of phenolics and aromatics. After5 h of reaction, the catalysts reach a pseudosteady activity state. The FeMoP/HZSM-5 catalyst yields thehighest amount of carbon products (53.5 wt%) with the highest selectivity towards aromatics (13.6 wt%,dry basis) and phenolics (12.2 wt%), due to the synergy between the weak acidity of the FeMoP and themild acidity of the HZSM-5 zeolite, which minimizes dehydration and gasification. The MFI frameworkallows the sweeping of coke precursors.
New insights about coke deposition in methanol-to-DME reaction over MOR-, MFI- and FER-type zeolites
Massimo Migliori,Enrico Catizzone,Alfredo Aloise,Giuseppe Bonura,Luis Gómez-Hortigüela,Leone Frusteri,Catia Cannilla,Francesco Frusteri,Girolamo Giordano 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.68 No.-
The effect of channel-system of zeolite on methanol-to-DME reaction was studied. Results revealed that channels size and topology affect catalyst lifetime, type and location of coke precursors. FER and MFI showed the best resistance towards coke deposition, whilst fast deactivation was observed on MOR. Although the higher concentration and strength of acid sites, FER structure formed a lower coke amount, preferably located within the pores, while coke cluster deposited on the external surface of MOR. Analysis of acid sites distribution and strength was performed during deactivation–regeneration process. Coke location assessment was also supported by molecular simulations.