Preparation of highly active zeolite-based hydrodesulfurization catalysts: Zeolite-supported Rh catalysts

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作者
Sugioka, M
Tochiyama, C
Sado, F
Maesaki, N
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O64 [物理化学(理论化学)、化学物理学];
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070304 ; 081704 ;
摘要
It was revealed that Rh/USY showed the highest activity among Rh supported on various zeolites and its catalytic activity was higher than commercial CoMo/Al2O3 catalyst for the hydrodesulfurization of thiophene at 400 degrees C. The catalytic activity of Rh/USY decreased gradually with the reaction time. However, the catalyst deactivation of Rh/USY with reaction time was remarkably improved by the addition of small amounts of alkali metal salts. It is concluded that Rh/USY modified with alkali metal salts are potential highly active second generation hydrodesulfurization catalysts for petroleum feedstocks.
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页码:551 / 558
页数:8
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