In this work, surface properties of wustite-based iron and iron‑cobalt catalysts were investigated. Measurements of hydrogen temperature-programmed desorption (TPD-H₂) and surface area of active forms of catalysts were conducted after reduction of catalyst precursors (16 h) in pure hydrogen at various temperatures (450, 475, 500, 550 and 600 °C). The amount of cobalt in the catalyst structure and the number of adsorption sites relative to hydrogen were correlated with the activity for ammonia synthesis reaction. The presence of cobalt increased thermal resistance of the catalysts and at the same time their activity in ammonia synthesis reaction.

中文翻译：

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用于氨合成反应的基于钙铁矿的铁钴催化剂的表面性能

在这项工作中，研究了基于钙铁矿的铁和铁钴催化剂的表面性能。在各种温度（450、475、500、550和600°C）下在纯氢气中还原催化剂前体（16小时）后，进行程序升温的氢解吸温度（TPD-H ₂）和催化剂活性形式的表面积的测量）。催化剂结构中钴的量和相对于氢的吸附位点的数量与氨合成反应的活性相关。钴的存在增加了催化剂的耐热性，同时增加了其在氨合成反应中的活性。