G. V. Pankina, A. N. Kharlanov, P. A. Chernavskii, K. I. Maslakov, A. V. Shumyantsev
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引用次数: 0
摘要
通过将铝镁尖晶石与金属硝酸盐溶液共同浸渍，制备了用 In 修饰的 Fe/MgAl2O4 催化剂。比较了通过原位磁性法、XPS、热解和吸附 CO 的红外光谱获得的催化剂吸附和还原特性数据。结果表明，催化剂中铟的存在抑制了铁氧化物还原成磁铁矿，也抑制了催化剂的脱水阶段和金属硝酸盐的分解。红外光谱显示，主要的吸附位点是包含 Fe2+ 阳离子的结构。
Modification of the Fe/MgAl2O4 Catalyst of CO Hydrogenation with Indium
The Fe/MgAl2O4 catalysts modified with In were prepared by joint impregnation of aluminum–magnesium spinel with solutions of metal nitrate salts. Data on the adsorptive and reductive properties of the catalysts obtained by the in situ magnetic method, XPS, thermolysis, and IR spectroscopy of adsorbed CO are compared. It was established that the presence of indium in the catalyst inhibits the reduction of iron oxides to magnetite, as well as the stage of water removal from the catalysts and the decomposition of metal nitrates. It was shown by IR spectroscopy that the main adsorption sites are the structures that include Fe2+ cations.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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