کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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68842 | 48524 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Unusual catalytic behavior of β-Bi2Mo2O9 in the oxidative dehydrogenation of n-butene to 1,3-butadiene Unusual catalytic behavior of β-Bi2Mo2O9 in the oxidative dehydrogenation of n-butene to 1,3-butadiene](/preview/png/68842.png)
A β-Bi2Mo2O9 catalyst was prepared by a co-precipitation method and applied to the oxidative dehydrogenation of n-butene to 1,3-butadine. It was found that the β-Bi2Mo2O9 catalyst retained lower oxygen mobility than γ-Bi2MoO6. It was also revealed that the β-Bi2Mo2O9 was thermally unstable and decomposed into α-Bi2Mo3O12 and γ-Bi2MoO6 at a reaction temperature of 420 °C. However, the β-Bi2Mo2O9 showed a higher catalytic performance than the α-Bi2Mo3O12 and γ-Bi2MoO6 catalysts in the oxidative dehydrogenation of n-butene, in spite of its thermal instability and low oxygen mobility. Moreover, the β-Bi2Mo2O9 showed a stable catalytic performance with time on stream without catalyst deactivation. The high and stable catalytic performance of β-Bi2Mo2O9 can be attributed to the synergy effect of α-Bi2Mo3O12 and γ-Bi2MoO6 formed via the decomposition of β-Bi2Mo2O9 during the catalytic reaction, to the high intrinsic catalytic activity of β-Bi2Mo2O9, and to the well-crystallized parts of β-Bi2Mo2O9.
A β-Bi2Mo2O9 catalyst was prepared by a co-precipitation method for use in the oxidative dehydrogenation of n-butene. It was found that the β-Bi2Mo2O9 catalyst showed a high and stable catalytic performance without catalyst deactivation, in spite of its thermal instability and low oxygen mobility. Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 264, Issues 1–2, 1 March 2007, Pages 237–240