Homogeneous precipitation method preparation of modified red mud supported Ni mesoporous catalysts for ammonia decomposition

Jian-Liang Cao; Zhao-Li Yan; Qing-Fang Deng

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Homogeneous precipitation method preparation of modified red mud supported Ni mesoporous catalysts for ammonia decomposition

机译：均匀的降水法制备修饰的红泥支撑的Ni介孔催化剂，用于氨分解

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Red mud modified by an acid digestion and alkali reprecipitation approach was employed as support for the preparation of Ni/MRM catalysts using the homogeneous precipitation method. The textural and structural properties of the as-received red mud (RM), the modified red mud (MRM) and the as-prepared Ni/MRM catalysts were characterized by X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF), thermogravimetry-differential scanning calorimetry analysis (TG-DSC), Fourier transform infrared spectra (FT-IR), transmission electron microscopy (TEM) combined with energy-dispersive X-ray spectroscopy (EDX) and N2 sorption techniques. The analysis results revealed a mesoporous nanocatalyst system with high surface area and uniform pore-size distribution. The results of the catalytic activity measurements showed that these mesoporous nanostructured Ni/MRM catalysts were very active for ammonia decomposition. The catalyst with 15% Ni loading and calcined at 600 °C exhibited the highest catalytic activity. Due to its unique properties and the feature of resource utilization of industrial solid waste, MRM holds great promise for developing catalysts and catalyst supports for applications in various catalytic reactions including catalytic ammonia decomposition.

机译：使用均匀沉淀方法，采用了通过酸消化和碱再沉淀方法修饰的红泥。通过X射线衍射（XRD），能量分散X射线荧光（ EDXRF），热重测定扫描量热法分析（TG-DSC），傅立叶变换红外光谱（FT-IR），透射电子显微镜（TEM）与能量差异性X射线光谱光谱（EDX）和N2 Sorpledtion技术相结合。分析结果表明，介孔纳米催化剂系统具有较高的表面积和均匀的孔径分布。催化活性测量结果表明，这些介孔纳米结构的Ni/MRM催化剂对于氨分解非常活跃。该催化剂具有15％Ni载荷，并在600°C下钙化表现出最高的催化活性。由于其独特的特性以及对工业固体废物的资源利用的特征，MRM对开发催化剂和催化剂支持在包括催化氨分解在内的各种催化反应中的应用都有很大的希望。

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来源
《Catalysis science & technology》 |2014年第2期|361-368|共8页
作者
Jian-Liang Cao; Zhao-Li Yan; Qing-Fang Deng;
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作者单位

Institute of New Catalytic Materials Science, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;

State Key Laboratory Cultivation Base for Gas Geology and Gas Control, School of Materials Science and Engineering, School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China.;

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正文语种英语
中图分类汉语教学;
关键词
Resource utilization; Red mud; Energy Dispersive X-Ray Spectroscopymesoporous materialssurface areaCatalystshomogeneous precipitationdecompositionammoniaCatalyst activity;

机译：资源利用;红色泥浆;能量色散X射线光谱材料;表面表面缩放区域静脉降水decositiondecompositiondecompositiondecompositionmoniacatalyst活性;

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Homogeneous precipitation method preparation of modified red mud supported Ni mesoporous catalysts for ammonia decomposition

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