The formation of NO_x from fuel-bound nitrogen is important for the design of chemical-looping combustion (CLC) power plants. This work studied to what extent NO and NH₃ reacts with the perovskite-like oxygen carrier ilmenite under conditions relevant to CLC. Based on mass balance calculations, N₂ was the major outlet N-species in all experiments. More NO was measured at lower temperatures and at a higher oxidation level of the oxygen carrier. The presence of syngas hindered the reduction of NO by ilmenite. There were significant differences between the two ilmenites studied with respect to N-species selectivity. Norwegian (rock) ilmenite reduced NO efficiently and showed a stable reaction behavior compared to Australian (sand) ilmenite. This could be attributed to the higher titanium content of Norwegian ilmenite.

从燃料结合的氮形成 NO _x对于化学循环燃烧 (CLC) 发电厂的设计很重要。这项工作研究了在与 CLC 相关的条件下NO 和 NH ₃与类钙钛矿氧载体钛铁矿反应的程度。基于质量平衡计算，N ₂是所有实验中的主要出口 N 物种。在较低的温度和较高的氧载体氧化水平下测量到更多的 NO。合成气的存在阻碍了钛铁矿对 NO 的还原。研究的两种钛铁矿在 N 种选择性方面存在显着差异。与澳大利亚（砂）钛铁矿相比，挪威（岩石）钛铁矿有效地减少了 NO 并显示出稳定的反应行为。这可能是由于挪威钛铁矿的钛含量较高。