大孔膦酸树脂吸附镧的研究

本文测定了大孔膦酸树脂对La3 的吸附容量，介质pH、温度、吸附时间等因素对吸附的影响。测得吸附速率常数K298＝7．64×10－5S－1，树脂功能基与La3 的络合比为3：1，用化学及红外光谱等方法，得到大孔磷酸树脂吸附La3 的基本参数及其机理。     

大孔吸附树脂对葡萄籽原花青素的吸附研究

对8种大孔吸附树脂对葡萄籽原花青素的吸附洗脱性能进行了筛选实验，并选择其中几种树脂研究其对葡萄籽原花青素的吸附特性及机理，发现NKA树脂是比较好的吸附剂。     

大孔树脂对磺酸类化合物吸附行为的研究

用4种大孔树脂ND-022，ND-900，NDA-99和NDA-100作为吸附剂，分别对水溶液中甲基磺酸钠、苯磺酸钠、对甲基苯磺酸钠和2-萘磺酸钠等磺酸盐进行吸附．探讨了溶液的初始pH值对不同类型树脂吸附磺酸类物质的影响，并通过动态吸附实验研究了SO4^2-对树脂吸附磺酸盐的影响．实验结果表明，复合功能树脂NDA-99对磺酸类化合物具有良好的吸附性能，且其选择性优于弱碱树脂ND-900，这为进一步研究大孔树脂对磺酸类物质的吸附机理和实际工业应用提供了一定的理论依据。     

大孔吸附树脂对大豆皂苷的吸附研究

比较了5种大孔吸附树脂对大豆皂苷的吸附等温线、吸附容量、解吸率和吸附动力学。发现ZTC-1树脂对大豆皂苷吸附量大、解吸容易、吸附速度快，是一种良好的大豆皂苷吸附荆，AB-8树脂次之．选择ZTC-l树脂纯化大豆皂苷粗提液，得到大豆皂苷产品纯度为78．2％(干物质)，回收率为93．1％．     

用大孔吸附树脂分离利血平

以利血平的吸附量和解吸率为指标,筛选大孔吸附树脂.研究吸附和解吸的优化条件,并考察选定树脂的吸附等温线、吸附动力学、吸附和解吸性能.结果表明,将催吐萝芙木根粉浸提液蒸去乙醇且不调pH(pH 1)进行吸附,HZ-818型大孔吸附树脂对利血平的吸附量可达到9.34mg/mL.使用工业乙醇-水(80:20,pH 1.0)为解吸剂,解吸率可达99.3%.该树脂的吸附符合Langmuir吸附等温方程.吸附前期,吸附速度较快,以后速度减慢.HZ-818型树脂对利血平的吸附量大,解吸率高,通过大孔树脂吸附和解吸,利血平浓度提高50倍以上,适宜于工业化生产.     

大孔吸附树脂对邻甲酚的吸附行为研究

研究了大孔吸附树脂NDA—909吸附水溶液中邻甲酚的热力学特征，并与Amberlite XAD—4树脂进行了比较．通过吸附动力学实验，初步探讨了初始温度对吸附过程的影响。结果表明，NDA—909对邻甲酚的吸附符合Freundlich经验公式，表现为放热的物理吸附过程．此外吸附速率受颗粒内扩散和其它类型扩散的共同控制。     

大孔树脂孔结构的测定

介绍了大孔树脂比表面积,孔容,平均孔径及孔径分布等孔结构参数的测定方法,对各参数的不同测定方法进行了分析,比较。通过作者的工作,对大孔树脂的孔结构测定及测定中需要注意的问题进行了讨论,对各种方法的特点进行了总结。     

大孔树脂对茄尼醇吸附行为的研究

从6种大孔树脂中筛选出用于茄尼醇分离较好的树脂NKA,并进一步研究了其对茄尼醇吸附行为,结果表明,吸附等温线服从Langmuir方程和Freundlich方程,且吸附过程表现为优惠吸附.在温度为283～313K,吸附量为15～35mg/g的条件下,吸附焓变为-16.20～16.57kJ/mol,自由能变为.3.142～3.459kJ/mol,吸附熵变为-47.43～41.17J/mol.K.NKA树脂对茄尼醇吸附速率较快,吸附过程符合一级吸附动力学方程,吸附过程主要受液膜扩散控制.     

大孔吸附树脂对洋地黄强心甙吸附性能的研究.I.

本文从六种大孔吸附树脂中筛选出ＨＡ－２和ＨＡ－３二种树脂，这二种树脂对洋地黄类强心甙－－地高辛具有较好的吸附性能，测定了吸附树脂的比表面积、孔容及平均孔径，讨论了地高辛溶液的浓度、ｐＨ值等诸条件对大孔吸附树脂吸附性能的影响。     

Adsorption Features of Flavonoids on Macroporous Adsorption Resins Functionalized with Ionic Liquids

A series of macroporous adsorption resins (MARs) with novel structures is synthesized via Friedel–Crafts catalyzed reaction. The adsorption kinetics of the synthetic resins with respect to the purification effect is systematically investigated by means of the response surface methodology (RSM). The kinetic data cannot be fitted to the classical model because it does not take multicompartments and desorption rates into consideration. A new multicompartment louver‐tide theory is thus developed considering that adsorption is an indefinite dynamic equilibrium process, which can be divided into innumerable ingredients with different desorption rates. This theory produces much better fits to the experimental data and provides a quantitative explanation with multicompartments and adsorption/desorption rates.     

Adsorption and Desorption Characteristics of Total Flavonoids from Acanthopanax senticosus on Macroporous Adsorption Resins

We examined the application of six different resins with the aim of selecting a macroporous resin suitable for purifying Acanthopanax senticosus total flavonoids (ASTFs) from Acanthopanax senticosus crude extract (EAS) by comparing their adsorption/desorption capacities, which led to the selection of HPD-600. Research on the adsorption mechanism showed that the adsorption process had pseudo-second-order kinetics and fit the Freundlich adsorption model. Moreover, the analysis of thermodynamic parameters indicated that the adsorption process is spontaneous and endothermic. The optimal conditions for purification of ASTFs were determined as sample pH of 3, 60% ethanol concentration, and 3 BV·h⁻¹ flow rate, for both adsorption and desorption, using volumes of 2.5 and 4 BV, respectively. The application of macroporous resin HPD-600 to enrich ASTFs resulted in an increase in the purity of total flavonoids, from 28.79% to 50.57%. Additionally, the antioxidant capacity of ASTFs was higher than that of EAS, but both were lower than that of L-ascorbic acid. The changes in ASTFs compositions were determined using ultra-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS), with the results illustrating that the levels of seven major flavonoids of ASTFs were increased compared to that in the crude extract.     

大孔吸附树脂对款冬花总黄酮的吸附分离特性

选择6种大孔吸附树脂,比较其对款冬花总黄酮的吸附量,解吸率及吸附动力学特性,筛选出较优的款冬花黄酮吸附树脂.结果表明：在静态吸附和动态吸附实验中均以SP825具有较优的吸附和解吸效果.     

丙烯酸酯树脂对泰乐菌素的吸附

通过调节单体、交联剂和致孔剂的种类及数量合成了一系列具有不同孔结构的丙烯酸酯树脂,并从中选出具有典型吸附差异的2种树脂,拥有适合的孔分布结构的三羟甲基丙烷三甲基丙烯酸甲酯(TRIM)聚合树脂(1#)和含酰胺基的三烯丙基异氰尿酸酯(TAIC)与TRIM共聚树脂(5#),与商业化大孔丙烯酸酯树脂XAD-7作比较,研究了丙烯酸酯树脂对泰乐菌素的吸附行为和机理。结果表明,树脂1#表现出了对泰乐菌素有最高的吸附量。3种吸附剂的吸附量随溶液pH值的升高呈增加趋势。吸附剂的吸附能力随溶液NaCl离子浓度的增强而提高,而对CuCl2则呈相反趋势,这是因为疏水作用和孔径排斥效应的贡献。泰乐菌素在3种吸附剂上的吸附动力学均符合准二级动力学模型,吸附等温线符合Langmuir模型。升高温度可以使树脂吸附能力增强,可能是“溶剂替代”效应所致。     

气相色谱法检测大孔吸附树脂中的有机残留物

建立了同时检测大孔吸附树脂中苯、甲苯、二甲苯、苯乙烯、二乙苯、二乙烯苯、萘、癸烷、十一烷和十二烷等10种有机残留物的测定方法。以二氯甲烷为提取溶剂,采用超声提取法对样品进行前处理。采用气相色谱法检测,色谱柱为DB-624毛细管柱,检测器为氢火焰离子化检测器。上述10种有机残留物在12 min内能很好地分离,样品的加标回收率(n=3)为73.8%～107.9%,相对标准偏差为1.3%～4.4%,最低检测限为0.007～0.03 mg/L。本方法具有灵敏、准确、快速等特点。对9种商品树脂及其预处理品的有机残留物进行了测定,结果表明树脂预处理前后有机残留物的含量相差很大,经过预处理的树脂可以安全地应用于中药的生产。     

Study on Adsorption and Separation of Naringin with Macroporous Resin

X-5 resin, with higher adsorption and easier desorption of naringin, was selected from five kinds of macroporous resins through static adsorption and desorption experiments. Effects of concentration, pH value, and flow rate of naringin extract on the adsorption of naringin by X-5 resin were studied. Meanwhile, the effect of these factors on the desorption of naringin from X-5 resin was also investigated. The experimental results show that the adsorption isotherm of naringin by X-5 resin can be described by the Langmuir isotherm equation. The static maximum adsorption capacity of naringin is 32.6 mg/g with naringin concentration at 2.7 g/L, while the dynamic adsorption capacity of naringin is 23.8 mg/g with naringin extract flow rate at two times that of resin volume per hour. The optimal eluant is 60% (v/v) ethanol-water with pH value of 10. The desorption ratio will rise to more than 85% when the flow rate of this optimal eluant is one to two times that of resin volume per hour. Translated from Journal of Central South University (Science and Technology)     

吸附树脂对山梨酸的吸附作用及其热力学性质

大孔吸附树脂;吸附树脂对山梨酸的吸附作用及其热力学性质     

微多相聚氨酯大孔树脂吸附细胞色素c的研究

微多相聚氨酯大孔树脂吸附细胞色素ｃ的研究史林启＊何炳林（南开大学吸附分离功能高分子材料国家重点实验室、高分子化学研究所天津３０００７１）关键词微多相聚氨脂大孔树脂，细胞色素ｃ，吸附选择性１９９６－０７－１５收稿，１９９６－１０－２４修回国家自然科学基...     

X-5大孔树脂吸附熊果酸的动力学与热力学特性研究

研究了熊果酸在X-5树脂上吸附的动力学和热力学特性,从物理化学的角度探讨了树脂吸附天然产物的机理。动力学结果表明,在pH=6.36时,熊果酸在X-5树脂上吸附量最大,吸附量为0.1016mmol/g。热力学结果表明,不同温度下熊果酸在X-5树脂上的等温吸附符合Langmuir方程和Freundlich方程,吸附热焓变?Hm=58.77kJ/mol,熵变?Sm=0.23kJ/mol·K,吉布斯自由能?Gm随温度升高向负方向增加。以上热力学参数表明,熊果酸在X-5树脂上的吸附属于自发的物理吸附过程,且在X-5大孔树脂吸附熊果酸过程中,液固界面间增加了随机性吸附。