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• W4200049147 endingPage "480" @default.
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• W4200049147 abstract "Biomass-derived feedstocks bring significant challenges to the longevity of the catalysts used for their conversion, and alkali metals, for example, K, in the feedstock have been widely ascribed as one of the important factors causing catalyst deactivation. To address this challenge, it is critical to understand the mechanism of catalyst deactivation caused by K accumulation to guide the improvement of catalysts and processes and the development of catalyst regeneration strategies. In this work, we report a deep understanding of the impact of K on a bifunctional Pt/TiO2 catalyst, which is an efficient catalyst for the ex situ catalytic fast pyrolysis of biomass. We simulated the K-poisoning of Pt/TiO2 catalysts by purposely loading different amounts of K (100–6000 ppm by weight) on the catalysts. A series of characterization approaches, including scanning transmission electron microscopy, Fourier transform infrared spectroscopy, and chemical titration, were combined with a kinetic assessment of multiple probe reactions to elucidate the mechanism of Pt/TiO2 deactivation by K accumulation. At low K loadings (<800 ppm), K preferentially poisons the strong Lewis acid sites, leading to significantly reduced activity for acid-catalyzed alcohol dehydration. However, acetone condensation is less sensitive to the poisoning of strong Lewis acid sites. Reactions that occur on Pt sites or at the metal–support interface, including alkene hydrogenation, m-cresol hydrodeoxygenation (HDO), and CO oxidation, were not impacted. At high K loadings (>800 ppm), K starts to accumulate on the Pt–TiO2 interfacial area, poisoning the interfacial active sites for HDO and CO oxidation reactions. We further found that the poisoning of the Pt/TiO2 catalyst by K is reversible, and water washing can successfully remove the accumulated K and recover the activities for both alcohol dehydration and m-cresol HDO reactions." @default.
• W4200049147 created "2021-12-31" @default.
• W4200049147 creator A5008770916 @default.
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• W4200049147 date "2021-12-17" @default.
• W4200049147 modified "2023-10-01" @default.
• W4200049147 title "Deactivation by Potassium Accumulation on a Pt/TiO₂ Bifunctional Catalyst for Biomass Catalytic Fast Pyrolysis" @default.
• W4200049147 cites W1483182391 @default.
• W4200049147 cites W1526904473 @default.
• W4200049147 cites W1873249282 @default.
• W4200049147 cites W1963538154 @default.
• W4200049147 cites W1969512910 @default.
• W4200049147 cites W1976537907 @default.
• W4200049147 cites W1977526817 @default.
• W4200049147 cites W1983348063 @default.
• W4200049147 cites W1992358055 @default.
• W4200049147 cites W1997270808 @default.
• W4200049147 cites W1998321859 @default.
• W4200049147 cites W2006003351 @default.
• W4200049147 cites W2017246158 @default.
• W4200049147 cites W2018097443 @default.
• W4200049147 cites W2020954056 @default.
• W4200049147 cites W2024562576 @default.
• W4200049147 cites W2027896722 @default.
• W4200049147 cites W2028975847 @default.
• W4200049147 cites W2031712597 @default.
• W4200049147 cites W2036022174 @default.
• W4200049147 cites W2037075148 @default.
• W4200049147 cites W2038835693 @default.
• W4200049147 cites W2041272854 @default.
• W4200049147 cites W2041520768 @default.
• W4200049147 cites W2047033388 @default.
• W4200049147 cites W2047800773 @default.
• W4200049147 cites W2048310500 @default.
• W4200049147 cites W2048546472 @default.
• W4200049147 cites W2054097386 @default.
• W4200049147 cites W2054449467 @default.
• W4200049147 cites W2057378377 @default.
• W4200049147 cites W2057465886 @default.
• W4200049147 cites W2066940333 @default.
• W4200049147 cites W2069666011 @default.
• W4200049147 cites W2073478749 @default.
• W4200049147 cites W2073694881 @default.
• W4200049147 cites W2081222724 @default.
• W4200049147 cites W2089528030 @default.
• W4200049147 cites W2094413046 @default.
• W4200049147 cites W2106403184 @default.
• W4200049147 cites W2115425275 @default.
• W4200049147 cites W2120446525 @default.
• W4200049147 cites W2126452174 @default.
• W4200049147 cites W2129136345 @default.
• W4200049147 cites W2133306527 @default.
• W4200049147 cites W2133887400 @default.
• W4200049147 cites W2135058583 @default.
• W4200049147 cites W2139630876 @default.
• W4200049147 cites W2149842552 @default.
• W4200049147 cites W2162021283 @default.
• W4200049147 cites W2171804929 @default.
• W4200049147 cites W2240401688 @default.
• W4200049147 cites W2301981748 @default.
• W4200049147 cites W2304950978 @default.
• W4200049147 cites W2318220481 @default.
• W4200049147 cites W2321888264 @default.
• W4200049147 cites W2324891570 @default.
• W4200049147 cites W2328641534 @default.
• W4200049147 cites W2331179437 @default.
• W4200049147 cites W2473556912 @default.
• W4200049147 cites W2519102655 @default.
• W4200049147 cites W2554572027 @default.
• W4200049147 cites W2583310104 @default.
• W4200049147 cites W2610779560 @default.
• W4200049147 cites W2620506950 @default.
• W4200049147 cites W2705849030 @default.
• W4200049147 cites W2725572800 @default.
• W4200049147 cites W2789254090 @default.
• W4200049147 cites W2888087537 @default.
• W4200049147 cites W2894650193 @default.
• W4200049147 cites W2896020065 @default.
• W4200049147 cites W2904792131 @default.
• W4200049147 cites W2992701318 @default.
• W4200049147 cites W2994811713 @default.
• W4200049147 cites W2997358273 @default.
• W4200049147 cites W3002666903 @default.
• W4200049147 cites W3007347708 @default.
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• W4200049147 doi "https://doi.org/10.1021/acscatal.1c02368" @default.
• W4200049147 hasPublicationYear "2021" @default.
• W4200049147 type Work @default.
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