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首页> 外文期刊>Catalysis science & technology >Ni nanocluster on modified CeO2-ZrO2 nanoporous composite for tri-reforming of methane
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Ni nanocluster on modified CeO2-ZrO2 nanoporous composite for tri-reforming of methane

机译：在修改CeO2-ZrO2 Ni纳米纳米多孔复合tri-reforming的甲烷

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Modified CeO2-ZrO2 nanoporous composites have been synthesized by using a very facile solvothermal approach and Ni nanoclusters were deposited on this newly developed support by using urea deposition precipitation method. The physico-chemical properties of the prepared catalysts were thoroughly characterized by using X-ray diffraction (XRD), nitrogen physisorption (BET), temperature programmed reduction (TPR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The prepared materials have been well explored for methane activation with a well-balanced composition of H2O, CO2 and O-2. The catalysts exhibit promising activity for tri-reforming (H2O, CO2 and O-2) of methane with high selectivity towards synthesis gas (a mixture of hydrogen and carbon monoxide). Moreover, reaction parameters also been optimized in detail in terms of temperature, gas hourly space velocity (GHSV) and time on stream (TOS). The study demonstrates that the well synchronised catalyst system is highly stable for more than 100 h with almost a constant syngas ratio of 2.1 and over 95% methane conversion at 800 degrees C.
机译：修改CeO2-ZrO2纳米多孔复合材料通过使用合成solvothermal相处地很融洽方法和沉积在镍制备这个新开发的支持通过使用尿素沉积沉淀的方法。物理化学性质的准备催化剂被使用彻底的特点x射线衍射(XRD)、氮气物理吸附(选择)、程序升温还原(TPR),扫描电子显微镜(SEM)、传输电子显微镜(TEM)和x射线光电子能谱(XPS)。材料很好地开发为甲烷激活平衡组成H2O、CO2和o2。活动tri-reforming (H2O、CO2和o2)对合成甲烷选择性高气体(氢气和一氧化碳的混合物)。此外,反应参数优化详细的温度、气体每小时空间速度(GHSV)和时间(TOS)。研究表明,同步催化剂体系是高度稳定的多100 h几乎一个常数合成气比率为2.1在800摄氏度和超过95%的甲烷转化。

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