低碳化学与化工2026，Vol.51Issue(8)：73-81,9.DOI:10.12434/j.issn.2097-2547.20250268
改性活性炭脱除氢气中微量甲醛的性能研究
Study on performance of modified activated carbon for removal of trace formaldehyde from hydrogen
张瑜 1王秀林 1聂锁府 1周树辉 1郑元爽 1李继聪 2姜伟丽2
作者信息
- 1. 中海石油气电集团技术研发中心,北京 100028
- 2. 中国石油大学(北京) 新能源与材料学院,北京 102249
- 折叠
摘要
Abstract
Trace formaldehyde may be present in hydrogen derived from fossil fuels and industrial by-product hydrogen sources,and its direct use can shorten the service life of hydrogen fuel cells.Trace formaldehyde in hydrogen can be deeply removed by adsorption.A series of nitrogen-containing compound-modified activated carbon adsorbents were prepared.The adsorbents were characterized by N2 adsorption/desorption,SEM,EDS,elemental analysis and FT-IR,and their adsorption performance was evaluated using a fixed-bed reactor.The results show that,after modification,the specific surface area and total pore volume of the activated carbon increase to varying degrees,and the nitrogen content in the activated carbon increases.Modification with nitrogen-containing compounds can enhance the formaldehyde adsorption capacity of activated carbon.Among them,activated carbon modified with 2-imidazolidinone exhibits the best adsorption performance,with an adsorption capacity of up to 69.15 mg/g.Molecular simulation results indicate that nitrogen atoms in nitrogen-containing compounds possess high activity and can readily interact strongly with formaldehyde.The 2-imidazolidinone-modified activated carbon exhibits the highest saturated adsorption capacity for formaldehyde,and oxygen-containing groups with high electron density can form electrostatic interactions with formaldehyde molecules,thereby enhancing the adsorption performance.关键词
甲醛/活性炭/吸附/含氮化合物/分子模拟Key words
formaldehyde/activated carbon/adsorption/nitrogen-containing compounds/molecular simulation分类
化学化工引用本文复制引用
张瑜,王秀林,聂锁府,周树辉,郑元爽,李继聪,姜伟丽..改性活性炭脱除氢气中微量甲醛的性能研究[J].低碳化学与化工,2026,51(8):73-81,9.
