摘要
分别采用有序介孔氧化硅SBA-15和NaY分子筛为硬模板合成了系列有序介孔炭OMC和微孔炭CFY.N2静态吸附测试表明,所合成的介孔炭具有丰富的介孔结构和集中的介孔分布.以亚甲基蓝为探针分子,研究其在有序介孔炭OMC和微孔炭CFY上的吸附行为.研究结果表明,有序介孔炭中大于3.5nm的大介孔孔容是决定亚甲基蓝吸附容量和吸附速率的关键因素.吸附动力学理论研究表明,准二级动力学方程可以很好地描述亚甲基蓝分子在介孔炭上吸附动力学行为.
Series of ordered mesoporous carbons, OMCs, and mircoporous carbon, CFY, were synthesized using ordered mesoporous silica SBA-15 and NaY zeolite as hard template, respectively. N2 adsorption tests showed that the synthesized mesoporous carbons possess abundant mesopores and centralized mesopore distribution. Methylene blue was used as probe molecule to investigate its adsorption behaviors on OMCs and CFY. Results showed that the mesopores of which the pore size is larger than 3.5 nm is crucial for the adsorption capacity and adsorption velocity of methylene kinetics of methylene blue on mesoporous carbons can model. blue. Theoretical studies showed that the adsorption be well depicted using pseudo-second-order kinetics
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2007年第17期1814-1820,共7页
Acta Chimica Sinica
基金
山东省自然科学基金(No.2003zx04)
山东理工大学博士启动基金
山东理工大学科技基金(No.2006KJM17)
山东理工大学创新团队基金资助项目.
关键词
有序介孔炭
微孔炭
N2吸附
亚甲基兰
吸附动力学
ordered mesoporous carbon
mircoporous carbon
N2 adsorption
methylene blue
adsorption kinetics
