Method for preparing fluoroethylene carbonate by directly fluorinating ethylene carbonate

The invention discloses a method for preparing fluoroethylene carbonate by directly fluorinating ethylene carbonate, which comprises the following steps: adding dehydrated ethylene carbonate and a supported catalyst into a reaction kettle, starting stirring and adjusting to a set temperature; the supported catalyst is a graphene catalyst loaded with metal palladium and iron; slowly feeding fluorine into the reaction kettle, and reacting with ethylene carbonate to generate fluoroethylene carbonate; organic alkali is added as a reaction aid in the fluorine gas feeding process. According to the method, fluoroethylene carbonate can be prepared in one step, the technological process is simple, the conversion rate and the selectivity are high, the content of impurities in difluoroethylene carbonate is low, and the product quality can be improved. 本发明公开了一种碳酸乙烯酯直接氟化制备氟代碳酸乙烯酯的方法，包括以下步骤：将脱水碳酸乙烯酯和负载型催化剂加入至反应釜中，开启搅拌并调节至设定温度；所述负载型催化剂为负载金属钯和铁的石墨烯催化剂；使氟气缓慢进料至反应釜中，与碳酸乙烯酯反应生成氟代碳酸乙烯酯；氟气进料过程中同时加入有机碱作为反应助剂。本发明可一步制得氟代碳酸乙烯酯，工艺流程简单