难检字字典在线查询

汉语拼音：lí zǐ jiāo huàn shù zhī

分子中含有交换功能团的有机高聚物。分子中含有酸性基团(如磺酸基)的称为阳离子交换树脂”，含有碱性基团(如氨基)的称为阴离子交换树脂”。不溶于酸、碱及多数溶剂。用久后逐渐失去交换性能，经再生可恢复使用。广泛用于水、糖溶液、甘油等的净化，金属的回收等。

• and (2) an ion exchange step in which at least the acid catalyst of acidic compounds is removed by an anion exchange resin.

  离子交换工序，通过阴离子交换树脂至少除去酸性化合物中的酸催化剂。

• It was shown from the experiments that these interfering matrix elements might be removed with the strong acidic cation exchange resin.

  实验结果表明，样品溶液通过阳离子交换树脂柱后，这些离子的干扰基本消除了。

• At present, nuclear engineers clean cobalt from the system by trapping it in what are known as ion-exchange resins.

  现在，核工程师们清除装置中的钴离子要通过一种名为离子交换树脂的物质将钴离子捕获。

• Dibutyl succinate was synthesized catalyzed by a strong acid cation exchange resin from succinic acid and n-butyl alcohol.

  用强酸性阳离子交换树脂催化丁二酸和正丁醇的酯化反应，合成了丁二酸二丁酯。

• The feed solution is passed over a strong base anion exchange resin to separate the components.

  饲料的解决办法是通过在一个坚实的基础阴离子交换树脂分离的组成部分。

• Therefore, the exploration of cation exchange resin modified to improve butene one-way conversion is of great significance.

  因此，探索阳离子交换树脂的改性以提高丁烯水合反应单程转化率具有重要的意义。

• Solid acid catalyst is a main aspect of catalyst development. Ion-exchange resin is one of solid catalysts used widely.

  固体酸催化剂是当前催化剂发展的主要方向，离子交换树脂是目前应用较多的一类固体酸催化剂。

• Crude triglycerides are contacted with a variety of adsorbents and ion exchange resins to reduce the levels of impurities.

  粗甘油三酯与各种吸附剂和离子交换树脂接触，以降低杂质的含量。

• Compared with inorganic catalysts, the ion exchange resin as catalysts shows excellent catalytic performance and could be readily recycled.

  与传统的无机催化剂相比，离子交换树脂表现出良好的催化性能并且能回收再利用。