Carbon consumption of activated carbon varies with sulfur-containing products. In this work, differential thermogravimetric (DTG), electron paramagnetic resonance (ESR), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD) we re used to reveal the adsorption-regeneration process of H₂S and the effect of adsorption products on carbon consumption. The results show that H₂S reacts with the C=C bond to form the C-S bond as an intermediate state, followed by the formation of elemental sulfur. It directly sublimates at approximately 380 °C, about 30 °C higher than the decomposition temperature of H₂SO₄. In the thermal regeneration process, the elemental sulfur in the form of monoclinic sulfur (S₈) first breaks into infinitely long chain molecules (S_∞) and then into small molecules, finally into sulfur vapor. The desorption of elemental sulfur consumes less oxygen and carbon functional groups, reducing the chemical carbon consumption by 59.8% than H₂SO₄; moreover, the compressive strength reduces less due to its slight effect on the disordered graphitic structure. H₂S also reacts with the C=O bond to form H₂SO₃ or H₂SO₄. The desorption of H₂SO₃ does not require carbon consumption. The decomposition of H₂SO₄ needs to react with the C=C bond to release SO₂, CO₂, and CO, and the compressive strength of activated carbon significantly decreases. The carbon consumption originates from two aspects; the one from the regeneration of sulfur-containing products is more than twice the other one from the decomposition of oxygen-containing functional groups.

活性炭的碳消耗量因含硫产品而异。在这项工作中，我们使用差示热重 (DTG)、电子顺磁共振 (ESR)、X 射线光电子能谱 (XPS) 和程序升温脱附 (TPD) 来揭示 H ₂ S的吸附-再生过程及其影响吸附产物对碳消耗的影响。结果表明，H ₂ S 与C=C 键反应形成CS 键作为中间态，然后形成元素硫。它在约 380 °C 时直接升华，比 H ₂ SO ₄的分解温度高约 30 °C 。在热再生过程中，单斜硫（S ₈) 首先分解成无限长链分子 (S _∞ )，然后分解成小分子，最后分解成硫蒸气。元素硫的解吸消耗更少的氧和碳官能团，比H ₂ SO ₄减少59.8%的化学碳消耗；此外，由于其对无序石墨结构的影响很小，因此抗压强度降低较少。H ₂ S 也与 C=O 键反应形成 H ₂ SO ₃或 H ₂ SO ₄。H ₂ SO ₃的解吸不需要碳消耗。H ₂ SO ₄的分解需要与C=C键反应释放SO ₂、CO ₂和CO，活性炭的抗压强度显着降低。碳消耗来源于两个方面；一种来自含硫产物的再生，另一种来自含氧官能团的分解。