| abstract |
The invention provides a method for preparing and purifying deuterated acetylene, comprising the following steps: reacting calcium carbide and D 2 O to generate deuterated acetylene to obtain crude deuterated acetylene, and the crude product deuterated acetylene is subjected to acid washing to remove D 2 O, dust and ND 3 , then alkaline washing to remove acidic impurities, and finally drying to obtain fine deuterated acetylene gas. In the invention, calcium carbide and heavy water are used as raw materials to prepare crude deuterated acetylene at high temperature, and then the crude deuterated acetylene is subjected to acid washing, alkali washing and drying. The calcium carbide in the raw materials is cheap and easy to obtain, and the excess of calcium carbide can improve the utilization rate of D 2 O; the reaction method and the purification method are simple and easy to operate, and the three waste calcium carbide slag and waste sulfuric acid produced can be mutually neutralized, the waste is utilized, and the yield is high, High purity and high deuteration rate. |