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- W4313404103 abstract "Abstract Isobutene dimerization is an important route to properly utilize mixed C 4 and further produce isooctane with a high‐octane number to replace MTBE in gasoline. A highly selective catalyst, which is effective for isobutene dimerization but ineffective for other olefins in the C 4 mixture, is necessary for industrial implementation. In this work, a series of supported metal sulfate catalysts Fe x Zn y /SiO 2 were prepared and characterized by XRD, SEM, N 2 physical adsorption‐desorption, NH 3 ‐TPD, Py‐FTIR, and XPS. Fe 0.2 Zn 1.8 /SiO 2 can achieve isobutene conversion up to 89 % with 0 % conversion of n ‐butene, and the selectivity of isooctenes (C 8 = ) product is 57 % (10 h on stream). Furthermore, isobutene conversion can sustain above 80 % after 50 h. It is found that these supported catalysts contain Zn 2+ , Zn + , Fe 3+ , and Fe 2+ species, and there is a synergetic effect between Zn 2+ and Fe 2+ . Zn 2+ is beneficial to improve the conversion of isobutene, and Fe 2+ facilitates the formation of C 8 = , resulting in a high C 8 = yield." @default.
- W4313404103 created "2023-01-06" @default.
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- W4313404103 date "2022-12-28" @default.
- W4313404103 modified "2023-10-13" @default.
- W4313404103 title "Supported Metal Sulfate Catalysts Fe<sub>x</sub>Zn<sub>y</sub>/SiO<sub>2</sub> for Selective Dimerization of Isobutene in Mixed C<sub>4</sub> to Isooctenes" @default.
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- W4313404103 doi "https://doi.org/10.1002/ejic.202200631" @default.
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