Abstract

Modified carbon materials are prepared via the incipient wetness impregnation of activated carbon with a sodium hydroxide solution followed by thermal treatment in air at moderate temperatures (60–200°C). The prepared samples are tested for their capacity to remove hydrogen sulfide from air via catalytic sorption. The effect of the temperature of thermal treatment (activation) on the dynamic H₂S sorption capacity of the modified carbon materials is highlighted. By modifying activated carbons via incipient wetness impregnation with aqueous NaOH, followed by thermal treatment in air at 200°C, it is possible to increase the dynamic sorption capacity of carbon materials for H₂S by a factor of more than 8. The results from this study can be used in developing new materials for removing hydrogen sulfide from air on the basis of commercially available types of activated carbons.

中文翻译：

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碱性改性活性炭通过吸附和催化氧化去除空气中的硫化氢的方法：研究热处理对材料性能的影响

摘要

改性碳材料的制备方法是：先用氢氧化钠溶液浸湿活性炭，然后在中等温度（60-200°C）的空气中进行热处理。测试制备的样品通过催化吸附从空气中去除硫化氢的能力。强调了热处理（活化）温度对改性碳材料动态H ₂ S吸附能力的影响。通过先用NaOH水溶液进行湿润浸渍来改性活性炭，然后在200°C的空气中进行热处理，可以提高碳材料对H ₂的动态吸附能力。S的系数大于8。本研究的结果可用于开发新的材料，该材料基于市售类型的活性炭，可从空气中去除硫化氢。