Mg-loaded activated carbons were prepared by adding various amounts of Mg (1 to 20 wt%) via ultrasonic-assisted impregnation to investigate the effects on the adsorption and desorption characteristics of ammonia. Mg-loaded activated carbons were characterized by TGA, BET, SEM, EDS mapping, and NH 3 -TPD analysis. Mg was homogeneously dispersed on the activated carbon and NH 3 -TPD analysis confirmed improved desorption and thermal stability for the 10 wt% Mg sample, named AC-Mg(10). AC-Mg(10) retained the highest desorption for five cycles and showed average desorption amount of 0.788 mmol NH 3 /g. During the breakthrough analysis, the AC-Mg(10) showed an initial ammonia adsorption capacity of 0.81 mmol NH 3 /g and average adsorption capacity of 0.69 mmol NH 3 /g over 30 adsorption and desorption cycles.

中文翻译：

---

镁负载量对活性炭氨容量和热稳定性的影响

通过超声辅助浸渍添加不同量的镁（1 至 20 wt%）来制备负载镁的活性炭，以研究对氨吸附和解吸特性的影响。通过 TGA、BET、SEM、EDS 映射和 NH 3 -TPD 分析表征了负载镁的活性炭。Mg 均匀分散在活性炭上，NH 3 -TPD 分析证实了 10 wt% Mg 样品（命名为 AC-Mg(10)）的解吸和热稳定性得到改善。AC-Mg(10) 在五个循环中保持最高的解吸量，平均解吸量为 0.788 mmol NH 3 /g。在突破分析过程中，AC-Mg(10) 在 30 次吸附和解吸循环中显示出初始氨吸附容量为 0.81 mmol NH 3 /g，平均吸附容量为 0.69 mmol NH 3 /g。