摘要
运用H2脉冲化学吸附、N2低温吸附技术和TPR-MS联用技术研究了酸改性的活性炭(AC)的结构性质,考察了酸处理对活性炭载体物理结构和化学性质的影响。研究表明,酸处理可以显著增加活性炭表面含氧官能团数量,经过改性的活性炭用于制备前驱体RuCl3/AC,Ru组分与含氧官能团之间存在明显的相互作用。酸改性对活性组分Ru的分散度及有效Ru比表面有较大影响,导致了Ru/AC用于催化丁酮加氢活性的显著改善。
H2 pulse chemisorption, N2 adsorption and TPR-MS were adopted to test structure properties of active carbon （AC） treated with nitric acid. Effects of nitric acid treatment on AC pore structure and chemical composition were studied. It was indicated that the amount of oxygen-functional group was considerably increased for the AC which was pretreated by nitric acid. As the support of Ru/AC catalyst, it was found that there was strong interaction between Ru species and oxygen-functional groups which significantly influenced the dispersion of Ru and apparently improved the catalytic activity of Ru/AC for hydro- genation of n-butanone.
出处
《化学工业与工程》
CAS
2013年第2期26-30,35,共6页
Chemical Industry and Engineering
关键词
活性炭
硝酸
钌
分散度
加氢
active carbon
nitric acid
ruthenium
dispersion
hydrogenation
