JOURNAL OF ISOTOPES

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Homomolecular and Isotopic Exchange Reactions by Catalyst

LONG Lei;LI Hu-lin;ZHOU Jian-yue   

  1. Shanghai Research Institute of Chemical Industry, Shanghai 200062, China
  • Online:2016-02-20 Published:2016-03-01

同分子同位素反应及催化剂应用

龙磊;李虎林;周建跃   

  1. 上海化工研究院,上海200062

Abstract:

It is widely used in the light-isotopes enrichment by distillation, such as H2, O2, N2, CO, etc. It can not get high abundance of isotopes in the late stage of enrichment for these two-atom include two isotopes, and it needs to add a reaction conversion device in the distillation column to remove the interference. By the catalyst, the single isotope gas was obtained from the reaction between the gas molecules, and then continue to separate them to get the high abundances of isotopes. The gas reaction and the catalyst method were introduced briefly . In addition, the equilibrium constant and the reaction mechanism of C isotope exchange reaction were introduced emphatically.

Key words: isotope, catalyst, exchange reactions, distillation

摘要:

轻同位素的工业化富集主要采用精馏法,如H2、O2、N2、CO等,这些双原子分子同位素气体在富集中后期,会受到其他同位素干扰而无法得到高丰度的同位素,需要在精馏级联中间增加反应转化装置,排除同位素干扰。在催化剂的作用下,气体分子之间发生反应,同位素原子得到重新组合生成单一同位素气体,继续分离得到高丰度的同位素气体。本文对同位素气体反应及采用的催化剂进行介绍,并着重介绍了C同位素交换反应的平衡常数、反应机理等特性。

关键词: 同位素, 催化, 交换反应, 精馏