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首页> 外文期刊>Journal of industrial and engineering chemistry >Dramatic enhancement of catalytic activity over transition metal substituted hematite
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Dramatic enhancement of catalytic activity over transition metal substituted hematite

机译:过渡金属取代的赤铁矿的催化活性显着提高

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This paper reports the fabrication of hematite (α-Fe2O3) and its mixed oxides (α-Fe_(2-x)O3CU_x, α-Fe_(2-x)O3Co_x, α-Fe_(2-x)O3Ni_x) by hydrothermal technique without using any surface directing agent or capping agent. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The synthesized catalysts were screening for epoxidation of cyclohexene and trans-stilbene. Cu based mixed oxide shows almost two-fold higher conversion than pure hematite. Although we have not got significant conversion, but the epoxidation of the above two substrate over the hematite and its mixed oxide is new-fangled.
机译:本文报道了利用水热法制备赤铁矿(α-Fe2O3)及其混合氧化物(α-Fe_(2-x)O3CU_x,α-Fe_(2-x)O3Co_x,α-Fe_(2-x)O3Ni_x)的方法无需使用任何表面定向剂或封端剂。通过X射线衍射(XRD),扫描电子显微镜(SEM)和X射线光电子能谱(XPS)表征产物。合成的催化剂用于筛选环己烯和反式二苯乙烯的环氧化反应。铜基混合氧化物的转化率几乎是纯赤铁矿的两倍。尽管我们尚未获得明显的转化率,但是上述两种底物在赤铁矿及其混合氧化物上的环氧化是新的。

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