Characterization and catalytic behavior of Na-W-Mn-Zr-S-P/SiO2 prepared by different methods in oxidative coupling of methane |
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Authors: | Wen Zheng Dangguo Cheng Fengqiu Chen Xiaoli Zhan |
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Institution: | Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China |
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Abstract: | Na-W-Mn-Zr-S-P/SiO2 catalysts for oxidative coupling of methane (OCM) were prepared by incipient wetness impregnation, sol-gel and mixture slurry methods. The catalyst prepared by mixture slurry method showed the best catalytic performance among all samples. In addition, the effects of different addition sequences of Na, W, Mn, Zr, S and P on the catalytic performance were studied. The absence of Na before the addition of Mn and Zr in the catalysts preparation depressed the formation of the active phases of Mn2O3 and ZrO2 and decreased the activities of the catalysts significantly. |
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Keywords: | oxidative coupling of methane Na-W-Mn-Zr-S-P/SiO2 prepared method |
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