摘要
综述了采用各种吸附方法脱除汽油、柴油中硫的研究进展。认为天然矿物及未改性商业分子筛具有价格便宜的优点,但本身脱硫性能不是很好;改性活性炭在硫化物吸附容量方面比较优良,但机械强度不高;金属氧化物及负载金属氧化物的多孔复合材料对硫化物的选择性较高,但吸附容量不大;以过渡金属离子改性分子筛,尤其是利用π络合脱硫的研究为以后柴油深度脱硫开拓了方向。指出吸附法结合其他脱硫工艺将是深度脱硫的重要研究方向之一;分子模拟应用于吸附脱硫的研究,将为脱硫吸附剂的开发提供新的途径。
Some work of adsorptive desufurization and application calculated via molecular simulations is reviewed, Although the price of some raw materials and commercial molecular sieves are very cheap, industrial applications are limited for theirs＇ bad performance of deep desulfurization, The modified activated carbon has high adsorptive capacity of sulfides, but the application is restricted by its mechanical intensity, The kinds of metal oxide and the porous materials loaded with metal oxides have high selectivity for sulfides. The researchers have been drawn by its good performance, But the adsorptive capacity is not satisfied, The molecular sieves were modified by metal ions, such as alkali metals, Ⅷ elements, noble metals and so on. Especially,the adsorptive desulfurization via π-complexation is a very promising method for diesel deep desulfurization, The adsorptive desulfurization combined with some other desulfurization technology will be an extremely important research area. Molecular simulations will be very promising methods and tools for developing absorbent of desulfurization,
出处
《现代化工》
EI
CAS
CSCD
北大核心
2005年第7期11-13,15,共4页
Modern Chemical Industry
基金
国家自然科学基金(20436030)
江苏省重点实验室开放课题基金(KJS03017)
关键词
吸附脱硫
分子模拟
汽油
柴油
adsorptive desulfurization
molecular simulation
gasoline
diesel
