摘要
研究了S-8、LSA-5B、X-53种吸附树脂分离纯化山竹夹层中黄酮类化合物的静态吸附过程。吸附动力学实验表明树脂吸附速率较快,1.5h基本达到吸附平衡,符合拟二级动力学吸附方程,吸附速率常数:k_(X-5树脂)>k_(LSA-5B树脂)>k_(S-8树脂)。在等温条件下,LSA-5B树脂、S-8树脂对黄酮类化合物的吸附量随初始吸附浓度的变化遵循Langmuir和Freundich吸附等温方程,X-5树脂仅遵循Freundich吸附等温方程。3种树脂的吸附自由能ΔG<0,是自发吸附。
The adsorption performance of flavonoids onto S-8/X-5/LSA-SB resins was studied and the adsorption kinetics and isotherm equations were simulated. The results indicated that not only Langmuir but also Freundlich equations were perfectly fit for the adsorption of flavonoids onto S-8 and LSA-SB resins. X-5 resin was only fit for the Freundlich equation. Data on three resins were correlated to the Ho second-order kinetics equations. The velocity constants of adsorption kinetics for flavonoids onto the three resins were： X-5 resin〉LSA-SB resin〉S-8 resin. The adsorption rate was fast and the equilibrium was arrived in 1.5 h. The adsorption free energy △G〈0, so the adsorprion performance were unprompted.
出处
《精细石油化工》
CAS
CSCD
北大核心
2008年第2期50-53,共4页
Speciality Petrochemicals
基金
广东省科技计划项目(2006B13801001)
广东轻工职业技术学院科研基金(200503)
关键词
山竹夹层
黄酮
吸附树脂
动力学
吸附等温
Garcinia mangostana L.
flavonoids
resin
kinetics
isotherm equation
作者简介
高虹（1966-），女，副教授，主要从事天然产物分离与应用方面的研究工作。E-mail：junel966@163．com。
