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Simulation for Synthesis of Tritiated Styrene by Catalyzed Addition of Deuterium

CUI Xiao-jing;KANG Yi;HU Shi-lin   

  1. Engineering Department of Special Material, China Institute of Atomic Energy, Beijing 102413, China
  • Online:2016-08-20 Published:2016-08-10

催化加成氚代苯乙烯制备研究

崔晓靖;康艺;胡石林   

  1. 中国原子能科学研究院 特种材料工程部,北京102413

Abstract:

Tritiated styrene plays an important role in the organic tritium lights, which could be made by selective hydrogenation of phenylacetylene. A simulated reaction of the preparation of tritiated styrene was studied by using deuterium instead of tritium and using the Lindlar catalyst instead of Pd/C catalyst to improve the conversion and selectivity of the reaction. Experiment results showed that stirring speed, temperature and the amount of deuterium were the most important factors to effect the conversion and selectivity of the reaction. The relative stronger stirring speed and higher temperature could improve the conversion rate of the reaction, but could not change the selectivity. When the excessive or less deuterium was added in the reaction, the selectivity was decreased significantly, since the over deuterium promoted the reaction toward ethylbenzene. Lindlar catalyst exhibited higher selectivity toward styrene than Pd/C.

Key words: lindlar catalyst, tritiated styrene, deuterium, selective catalyzed addition reaction

摘要:

以林德拉催化剂替代普通钯碳催化剂,利用氘气替代氚气模拟研究搅拌程度、温度、投料比对氚代苯乙烯加成反应转化率和选择性的影响。结果表明,较高的搅拌速度和温度可以提高催化加成反应的转化率,但对选择性影响较小;氘气加入量对转化率和选择性影响较大,不足或过量都会影响氘代苯乙烯的纯度;林德拉催化剂对苯乙烯的选择性高于钯碳催化剂。

关键词: 林德拉催化剂, 氚代苯乙烯, 氘气, 催化加成