气固法制备IF_5工艺

IF_5 Preparation Technics by Gas-Solid Reaction

以碘单质和氟气为原料,采用气固法制备IF5,其中氟气间歇式通入反应器,氟气流量约为28～30 L/min,反应压力不高于-0.01 MPa。研究了反应温度、原料配比(物质的量之比)和碘加入量对反应的影响。结果表明,制备IF5的最适宜条件为:反应过程温度控制在80～100℃之间,氟气与碘的配比(物质的量之比)约6∶1,在容积为100 L的反应器内碘加入量约10 kg。此条件下,得到质量分数为99%的IF5产品的产率最大为87.32%。

IF5 was prepared with I2 and F2 by gas-solid reaction,the flow rate of F2 is 28—30 L/min and reaction pressure is under-0.01 MPa.The influence of reaction temperature,molar ratio of reactants and adding amount of I2 were investigated.Results showed that the optimal conditions of preparing IF5 were： reaction temperature between 80—100 ℃,molar ratio of F2 to I2 is 6∶1,adding amount of I2 was 10 kg in 100 L reactor.Under these conditions,the biggest yield of IF5 could reach 87.32% with purity of 99%.