In the present study, a series of regeneration conditions and the regeneration mechanism of modified lake sediment biochar (Fe-KOH/LSB) catalysts for low-temperature catalytic hydrolysis of carbon disulfide (CS₂) were investigated. The results showed that Rm-WNA method had the best regeneration effect. Under optimal regeneration conditions, the sulfur capacity (13.86 mg_[S]/g_[catalyst]) of regenerated Fe- KOH/LSB was close to that of fresh Fe-KOH/LSB (14.88 mg_[S]/g_[catalyst]). The water washing process could wash away a small number of sulfates and a large number of alkaline groups. TG-DTA and DRTFIR results indicated that the nitrogen sweeping process could decompose Fe₂(SO₄)₃ into Fe₂O₃, which partially recovered the catalytic and the adsorptive abilities. CO₂-TPD results indicated that the alkali steeping process offer -OH groups, further improving the catalytic and the adsorptive abilities. After 3 times-regeneration, the sulfur capacity of Fe-KOH/LSB reached 13.31 mg[S]/g_[catalyst], indicating that the Rm-WNA method had good stability for the recovery of the catalytic activity. BET, XPS and XRD results revealed that the decrease of the sulfur capacity for regeneration was attributed to the decrease of the adsorptive abilities of C and SiO₂.

本研究研究了用于二硫化碳（CS ₂）低温催化水解的改性湖沉积生物炭（Fe-KOH / LSB）催化剂的一系列再生条件和再生机理。结果表明，Rm-WNA法再生效果最好。在最佳再生条件下，再生的Fe-KOH / LSB的硫容量（13.86 mg _[S] / g _[催化剂]）接近新鲜的Fe-KOH / LSB的硫容量（14.88 mg _[S] / g _[催化剂]） 。水洗过程可以洗掉少量的硫酸盐和大量的碱性基团。TG-DTA和DRTFIR结果表明，氮气吹扫过程可以分解Fe ₂（SO₄）₃转变为Fe ₂ O ₃，部分恢复了催化和吸附能力。CO ₂ -TPD结果表明，碱浸渍过程提供了-OH基团，进一步提高了催化能力和吸附能力。再生3次后，Fe-KOH / LSB的硫载量达到13.31 mg [S] / g _[催化剂]，表明Rm-WNA方法具有良好的稳定性，可恢复催化活性。BET，XPS和XRD结果表明，硫的再生能力降低归因于C和SiO ₂的吸附能力降低。