We report an experimental evaluation of NH3 oxidation over three types of oxygen carrier materials under conditions relevant for chemical-looping combustion. The active metal and the oxidation state of the oxygen carrier is crucial to NO formation from NH3. Although, the carriers tested were equally efficient in terms of CO oxidation they differed from 0 to 6000 ppm of NO in the off-gas. The nickel based carrier produced the lowest amounts of NO and the manganese based the most. The sensitivity to the oxidation state also differed between the materials. The results stress that NO formation should be consider in the choice of oxygen carrier material as well as in the design of chemical looping-combustion systems.

中文翻译：

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铁、锰和镍氧化物对氨的氧化——对化学循环燃烧中 NOx 形成的影响

我们报告了在与化学循环燃烧相关的条件下对三种氧载体材料进行 NH3 氧化的实验评估。活性金属和氧载体的氧化态对于从 NH3 形成 NO 至关重要。尽管测试的载体在 CO 氧化方面同样有效，但它们在尾气中的 NO 含量从 0 到 6000 ppm 不等。镍基载体产生的 NO 量最低，而锰基载体产生的 NO 量最高。不同材料对氧化态的敏感性也不同。结果强调在选择氧载体材料以及设计化学循环燃烧系统时应考虑 NO 的形成。