文章基本信息

标题：Encapsulation of CuO nanoparticles within silicalite-1 as a regenerative catalyst for transfer hydrogenation of furfural
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作者：Mingwei Weng ; Zihao Zhang ; Francis Okejiri 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：8
页码：1-14
DOI：10.1016/j.isci.2021.102884
语种：English
出版社：Elsevier
摘要：SummaryCatalytic transfer hydrogenation (CTH) of biomass-derived furfural (FAL) to furfuryl alcohol is recognized as one of the most versatile techniques for biomass valorization. However, the irreversible sintering of metal sites under the high-temperature reaction or during the coke removal regeneration process poses a serious concern. Herein, we present a silicalite-1-confined ultrasmall CuO structure (CuO@silicalite-1) and then compared its catalytic efficiency against conventional surface-supported CuO structure (CuO/silicalite-1) toward CTF of FAL with alcohols. Characterization results revealed that CuO nanoparticles encapsulated within the silicalite-1 matrix are ∼1.3 nm in size in CuO@silicalite-1, exhibiting better dispersion as compared to that in the CuO/silicalite-1. The CuO@silicalite-1, as a result, exhibited nearly 100-fold higher Cu-mass-based activity than the CuO/silicalite-1 counterpart. More importantly, the activity of the CuO@silicalite-1 catalyst can be regenerated via facile calcination to remove the surface-bound carbon deposits, unlike the CuO/silicalite-1 that suffered severe deactivation after use and cannot be effectively regenerated.Graphical abstractDisplay OmittedHighlights•Ultrasmall CuO NPs are encapsulated in silicalite-1 matrix for CTH of furfural•Encapsulated CuO catalyst shows impressive Cu-mass-based activity of ∼130 hr−1•Carbon deposits can be easily removed without the obvious increase in CuO size•Strong Cu-Si interactions exist in silicalite-1-encapsulated CuO structureChemistry; Inorganic chemistry; Chemical reaction; Catalysis; Materials science