离子交换 中英文.docVIP

离子交换树脂 Organic ion exchange resins having cross linked hydrocarbon matrix and derivatized with inorganic group are the most common ion exchange materials used in industrial applications.有机离子交换树脂的交联基体和烃类衍生物与无机组是最常见的离子交换在工业应用中使用的材料。 The majority of the commercial resins are based on the styrene-divinylbenzene structure because of its good resistance against chemical and physical stress.该商业树脂绝大多数都是以由于其抗化学和物理应力好，耐苯乙烯二乙烯苯的结构。 The structure is stable at relatively high temperatures and over the whole pH range.其结构是稳定在较高的温度和pH值在整个范围内。 Styrene polymer chains (Figure 2) are crosslinked with divinylbentzene (DVB) and the elasticity of resin can be adjusted by varying the amount of DVB it contains.苯乙烯聚合物链（图2）交联divinylbentzene（DVB）的，树脂的弹性，可以通过改变它包含的DVB数额进行调整。 Figure 2.图2。 Styrene-divinylbentzene co-polymer X= ionogenic/functional group苯乙烯- divinylbentzene共聚物X = ionogenic /功能组 The ion exchange properties of organic resins are mainly based on ionogenic groups which can be attached to practically all the styrene rings in the styrene-divinylbentzene co-polymer.有机树脂的离子交换性能，主要是在此基础上可以附加在苯乙烯divinylbentzene合作，几乎所有的聚合物苯乙烯环ionogenic组。 Thus, resins with very low crosslinking (DVB portion 1-2%) can have the maximum theoretical concentration of the ionogenic groups of approximately 9 mmol/g.因此，具有非常低的交联（部分1-2％的DVB）树脂可以有大约9 mmol理论的ionogenic组的最大浓度/克 Usually, commercial resins contain ionogenic groups at a concentration in the range of 2.5-5 mmol/g.通常情况下，商业树脂中含有的浓度范围2.5-5 mmol /克ionogenic组 The nature of ionogenic groups can vary from strong acidic cation exchangers (-SO 3 - ) to strong basic anion exchangers (-N + (CH 3 ) 3 ) and to chelate forming exchangers.这些团体的性质ionogenic可以从强酸性阳离子交换（-的SO 3 - ）强碱性阴离子交换器（- N的+为（CH 3）3）和螯合形成器。 There are also active groups which have no electric charge but donor atoms attract cations by donating free electron pairs to form coordination bonds.还有哪些没有原子电荷但捐助者的捐款吸引自由电子对形成配位键阳离子活性基团。 Ionogenic, chelating, and complex forming active groups may be called functional gro