A. M. Gorlova, V. N. Rogozhnikov, A. A. Pechenkin, I. E. Nikulina, D. I. Potemkin
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引用次数: 0
摘要
本文首次介绍了在水煤气变换反应中，金属沉积顺序和含 Re 成分形成条件对一系列 1.9 wt % Pt-1.8 wt % Re/Ce0.75Zr0.25O2 催化剂性能的影响。结果表明，先沉积铂的催化剂中两种金属的含量接近预期水平，与单金属铂催化剂相比，可以在较低温度下实现最大的 CO 转化率。根据一氧化碳化学吸附数据和单位铂表面积的反应速率计算，可以推测含再相的作用在更大程度上是稳定高度分散的铂状态，而不是参与催化反应。
Effect of Preparation Conditions on Properties of Pt–Re Catalysts Supported on Ceria–Zirconia in Water Gas Shift Reaction (WGSR)
The data obtained for the first time on the influence of the sequence of metal deposition and the conditions of formation of the Re-containing component on the properties of a series of catalysts 1.9 wt % Pt–1.8 wt % Re/Ce0.75Zr0.25O2 in the water gas shift reaction are presented. It is shown that catalysts in which platinum is deposited first have a content of both metals close to the expected level and make it possible to achieve the maximum CO conversion at a lower temperature compared to a monometallic platinum catalyst. Based on the data on CO chemisorption and calculations of the reaction rate per platinum surface area, it is assumed that the role of the Re-containing phase is to a greater degree related to the stabilization of a highly dispersed platinum state, rather than to participation in the catalysis of the reaction.
期刊介绍：
Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
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