摘要
将热分析动力学方法引入多环芳烃脱附动力学的研究中,以活性炭上吸附的萘和苊为研究对象,在SETSYS Evolution 16型热重分析仪上得到了不同升温速率条件下的失重–微商失重(thermogravity-differential thermogravity,TG-DTG)曲线,根据参数特征值研究萘和苊的脱附行为。采用等转化率法求得萘和苊在活性炭上的平均脱附活化能分别为65.89和96.13 kJ·mol·1,根据主曲线法判断出最概然机理函数为JMA类方程,并精确求得指前因子A和反应级数n,最终给出萘和苊在活性炭上的脱附动力学模型积分形式分别为:G(α)=[-ln(1-α)]1.6526和G(α)=[-ln(1-α)]1.9650(α为转化百分率)。
Thermal analysis kinetics method was introduced to study the desorption kinetics of polycyclic aromatic hydrocarbons, naphthalene （NAP） and acenaphthene （AcP）, adsorpted on activated carbon （AC）. The desorption performances of NaP and AcP on AC were tested at different heating rates with SETSYS Evolution 16 thermogravity analyzer （TGA）, which can do experiments such as thermogravity （TG） and differential thermogravity （DTG） at the same time. The average desorption activation energy of NaP and AcP calculated by the isoconversional method are 65.89 and 96.13 kJ·mol^-1, respectively. The most probable mechanism functions of NaP and AcP desorption from AC belong to the JMA type equation based on the master plot method, and the frequency factor A and the reaction order n were also calculated out. The integral equations of desorption kinetics model of NaP and AcP on AC are G（α）=[-ln（1-α）1.6526 and G（α）=[-ln（1-α）]1.9650 （α is the conversion of Nap and AcP）, respectively.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第32期35-40,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(50608040)
教育部留学回国人员科研启动基金资助项目
江苏省科技支撑计划(工业)项目(BE20090165)
2006年江苏省高校"青蓝工程"优秀青年骨干教师资助项目~~
关键词
萘
苊
脱附动力学
活性炭
热分析动力学
naphthalene
acenaphthene, desorption kinetics
activated carbon
thermal analysis kinetics
