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- W3203043106 abstract "Application of coal fly ash (FA) residues as catalyst support is mainly restricted because of low surface area and high sulfur content. In the present work, the physicochemical properties of a low-efficiency FA were significantly improved via simple acid/alkali treatments consisting of one-step (HNO3 or NaOH) or two-step (NaOH/HNO3 or HNO3/NaOH) leaching-partial-dissolution (LPD). As a result, as compared to Ni-FA, the catalytic activity of the Ni-FA(treated) catalysts for glycerol steam reforming was considerably enhanced. Alkali-LPD is more effective than acid-LPD in simultaneously improving FA’s surface area and regulating FA’s elemental distribution. Ni-FA(HNO3/NaOH) has the best performance with high glycerol conversion to gas (99.2%) and H2 yield (74.5%), attributed to i) removal of sulfur-containing species by acid-LPD, ii) upgrading specific surface area, iron-exposure, and Ni dispersion via alkali-LPD, iii) diminishment of coke using acid/alkali-LPD sequence treatment, and iv) enhancement of catalytic stability due to the formation of NiFe alloys." @default.
- W3203043106 created "2021-10-11" @default.
- W3203043106 creator A5007247441 @default.
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- W3203043106 date "2022-02-01" @default.
- W3203043106 modified "2023-09-23" @default.
- W3203043106 title "Ni-based catalysts supported on acid/alkali-activated coal fly ash residue for improved glycerol steam reforming" @default.
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- W3203043106 doi "https://doi.org/10.1016/j.apcatb.2021.120791" @default.
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