从铁状态的变化研究球性活性炭中孔形成的机理

利用穆斯堡尔谱、透射电子显微镜等表征手段研究了添加二茂铁后酚醛树脂基球形活性炭中孔形成的机理。结果表明,添加到酚醛树脂中的二茂铁在炭化阶段被还原为单质铁。单质铁对炭－反应有催化气化作用。在活化阶段,铁粒子周围的炭基体与水蒸汽的活化反应速率快,被刻蚀掉更多的炭,所以在其周围形成中孔。     

改性5分子筛吸附剂从含氟水中除氟研究

研究了以5A分子筛为骨架吸附材料,经在含AI^3 或Fe^3 溶液中离子交换改性处理,获得了一种可吸附除氟的改性分子筛。实验表明,该种分子筛对水溶液中的低含量氟有良好的吸附性能。静态饱和吸附容量可达28．98和21．4mgF/g分子筛（分别对含AI^3 或Fe^3 分子筛）。含氟水经分子筛柱处理后,除氟率可达99％。吸附氟后的分子筛可用柠檬酸盐洗脱氟,洗脱率接近安全。洗脱后的分子筛可重复使用。得到一种新的效果显著的除氟方法。     

含杀菌、吸附双功能基棉纤维的制备与性能

化学改性;吸附剂;杀菌剂;含杀菌、吸附双功能基棉纤维的制备与性能     

氨基酸在固/液界面的吸附作用

本文介绍了氨基酸在固/液界面吸附等温线的特点,氨基酸液相吸附热力学和活性炭、硅胶、二氧化钛、氧化铝、蒙脱土等自水中吸附氨基酸的机制。     

A NOVEL METAL CHELATE AFFINITY ADSORBENT FOR PROTEIN UPTAKE

In this article,a spherical chitosan gel crosslinked by epichlorohydrin was prepared.It was then loaded with copper ions to produce a metal chelate affinity adsorbent for protein.The uptake of bovine serum albumin(BSA)by the affinity adsorbent was investigated.and the adsorption capacity for BSA as high as 40mg/g-wet beads was observed.The adsorption equilibrium data was well correlated by the Langmuir equation.The adsorption was considerably affected by pH.In additio.The amount of BSA adsorbed onto the beads decreased with the increasing of aqueous phase ionic strength,so adsorbed BAS can be desorbed by adjusting pH orionic strength of the solution.     

新型β-环糊精固载化高分子对内、外源性毒物的包络吸附研究

高分子吸附剂作为医用生物材料进行血液灌流已广泛应用,它具有特定的化学结构和物理结构,可选择性吸附不同种类的内、外源性毒物;它的机械强度高,可避免在血液净化中因微小颗粒脱落而引起血栓.本文将β-环糊精环状低聚糖以磺酸醣键固载到交联聚苯乙烯载体上,制备新型的β-环糊精高分子进行吸附内、外源性毒物分子研究,取得了良好的结果.     

STUDY ON NOVEL SORBENT FOR REMOVAL OF UREA COMPLEX SORPTION OF UREA BY MEANS OF ALGINATE—Cu（Ⅱ） COMPLEX

Alginate-Cu(Ⅱ）complex beads or membranes were prepared for removal of urea.The mechanism of sorption of urea was identified by UV-Visible spectra,FT-IR spectra and Far-Infrared spectra.The factors affecting the urea sorption capacity were discussed in detail.Results showed that the Alginate-Cu(Ⅱ）complex sorbent can sorb about 60 my urea per gram of sorbent at 37℃ and the concentration of urea was 130mg/100ml in Na2HPO4 and NaH2PO4 buffer solution(pH=7.0).     

磁性琼酯糖亲和吸附剂的合成与应用

采用反相悬浮包埋技术合成了粒径在43-295μm之间的磁性琼脂糖微球。磁性琼脂糖微球经环氧氯丙烷活化后，分别键合6-氨基已酸、氨基乙酸和乙二胺为间隔臂，用水溶性碳二亚胺为缩合剂，分别偶联对氨基苯甲脒、l-精氨酸甲酯和胍基已酸，制备了3种磁性亲和吸附剂，并用于尿激酶粗品的分离纯化。测定了活性回收率和比活提高倍数，并与以磁性葡聚糖为基质的磁性亲和吸附剂对尿激酶的纯化效果进行了对比。     

尿激酶粗制品的提取技术

本文在叙述尿激酶的药用价值及发现历程的同时,结合生产实践,提供了以硅胶-G及celitet—545这两种不同吸附剂提取尿激酶粗品的方法。