Enhancement of C O bond cleavage to afford aromatics in the hydrodeoxygenation of anisole over ruthenium-supporting mesoporous metal oxides
作者： Tuan Ngoc Phan , Young-Kwon Park , In-Gu Lee , Chang Hyun Ko
DOI: 10.1016/J.APCATA.2017.06.029
关键词: Mesoporous material 、 Selectivity 、 Anatase 、 Ruthenium 、 Deoxygenation 、 Chemistry 、 Photochemistry 、 Hydrodeoxygenation 、 Catalysis 、 Anisole
摘要: Abstract Mesoporous TiO2, Al2O3, silica (SBA-15), and nonporous conventional TiO2 (P25) were used as supports for Ru catalysts in the hydrodeoxygenation (HDO) of anisole. The catalytic reaction was performed a batch reactor at 200 °C 5–30 bar H2 pressure. It shown that selectivity this system towards benzene strongly depended on pressure, being higher low Moreover, significant differences product distribution observed these suggesting strong influence nature controlling pathway. SBA-15-supported catalyst (Ru/SBA-15) catalyzed primarily by hydrogenation (HYD) mesoporous-Al2O3-supported (Ru/meso-Al2O3) promoted via HYD demethylation pathways simultaneously. Mesoporous-TiO2-supported (Ru/meso-TiO2) P25-supported (Ru/P25) yield benzene, indicating its high direct deoxygenation (DDO) route. use meso-TiO2 facilitated spillover effect, leading to formation numerous Ti3+ defect sites oxygen vacancies. As result, Ru/meso-TiO2 with anatase phase exhibited DDO pathway compared P25 mixed rutile phase. results indicated mesoporous structure plays an important role promoting interaction particles selecting HDO
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