离子交换作用

Objective To study the performance of ion exchange fiber adsorbing and desorbing puerarin by batch method.

目的考察离子交换纤维对葛根素的静态吸附和解吸作用。

In the process that hydronium exchanging plan deal with industry waste water or water quality intenerate,de-salt and making of high pure water,ceramics grain can be used ad colophony mat layer in reflux palingenesis fixed bed,the diameter of grainf of mat layer is 1 -32mm ,ceramics grain filtering materials also possess the effect of grain filtering materials also possess the effect of de-iron and de –manganese,and de-iron effect is over 90%,it specially fit de-iron and de-manganese in north deep well water, its operating plan is resemble with other de-iron filtering materials.

在离子交换法处理工业废水或水质软化、除盐、高纯水制取中，陶粒可在逆流再生固定床中做树脂垫层，垫层颗粒径 1 -32mm ，陶粒滤料还具有除铁除锰的作用，除铁效果在 90%以上，特别适宜于北方深井水除锰，其操作方法与其它除铁滤料相似。

The study on the hardening mechanism of the soft soil with the materials shows that the hardening procedure can be divided into three stages:(1). Hydrating and dissolving stage, when material A and material B of the high-water-content and quick-setting materials respectively dissolve and balance in water.(2). Gel and consolidating stage, when the materials hydrate into calcium crystal and the ion exchange and aggregation of soil particles occur in an alkaline environment.(3). the structure developing stage, when the calcium crystals connect each other, absorb and crystallize the water around; the hydrate remnants, calcium hydroxide, carbonate continuously in water and in the air.

本文对高水速凝材料-软土硬化机理的研究表明，高水速凝材料-软土的硬化过程可分为三个阶段：①水化溶解阶段：主要为高水速凝材料的甲、乙料分别与水的溶解、维持平衡阶段；②胶凝固化阶段：主要为高水速凝材料的水化反应生成钙矾石晶体以及土颗粒在碱性环境中发生离子交换和团粒化作用；③强度增长阶段：钙矾石晶体相互连接，大量吸收周围环境中的水分，并将水分变成自己的结晶水；水化残余物氢氧化钙在水中和空气中发生碳酸化作用。

In this paper, the effects of different catalyst combinations on the synthesis of α-chloro-dodecanoic acid were investigated, in which a series of acyl chlorides such as 4-toluene sulfonyl chloride, dodecanoyl chloride, chlorosulphonic acid , etc.

本文从烯酮式反应机理出发，以α-氯代十二酸的合成为模型，对酰氯化试剂(对甲苯磺酰氯、十二酰氯、氯磺酸等)和质子酸催化剂(如H型离子交换树脂、氯磺酸、对甲苯磺酸、醋酸等)进行组合和选择，并与文献报道的特殊添加剂乙酐比较，研究不同催化体系在酸催化合成α-氯代脂肪酸时的催化作用。

The decrease in the intensity of the ferromagnetic double-exchange interaction has been correlated with the increase in the terbium content and the decrease of .

铁磁性的双交换作用和铽含量的增加及A位离子的平均半径＜r〓＞的减少紧密相关。

In this paper,the effects of pH,concentration of buffer and triethylamine in mobile phase on chromatographic behavior of oxymatrine,sophoridine and matrine were studied by using ion exchange chromatography and their mechanisms were discussed.

采用离子交换色谱法，以氧化苦参碱、槐定碱、苦参碱3种生物碱为对象，研究了流动相pH、缓冲液浓度及三乙胺加入量等色谱条件对生物碱色谱行为的影响，并探讨了其作用机制。

Ion exchange resin is a new type FRF processing technology, whose capacity is 7 times higher than diatomite and it can decompose phosphate.

离子交换树脂是最新的抗燃油处理技术，其处理酸的能力是硅藻土的7倍，并且对已经存在的磷酸金属盐有分解作用。

The two ion theories related to dipolar interaction and anisotropic exchange interaction are also introduced briefly.

对于磁偶极子及各向异性交换作用的双离子理论的计算方法也作了扼要的介绍。

After electroreduction of ZME loaded Hg, metallic mercury particles are located on the internal and external surface of microporous system, the sizes of which are limited by the sizes of the zeolite cages.

分子筛离子交换点位上的Hg〓通过电还原成为Hg〓，在表面张力的作用下，Hg〓聚集成汞束定位在沸石分子筛孔系统的内表面和外表面，其汞束的聚集程度受分子筛尺寸的限制。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。