摘要
针对重镁水热解反应特点,采用抽真空降低系统中CO2气体分压的方式,加速重镁水热解反应正向反应速率。通过观察、对比一定热解温度,不同真空度下反应生成的轻质碳酸镁晶体型貌,得出结论:降低CO2气体分压,提高热解反应速率,会减缓轻质碳酸镁晶体型貌由棒状→片状→球状这一转变过程。当热解温度为50℃,提高反应速率,会促进轻质碳酸镁晶体团聚,反应速率越快,团聚现象越明显。
According to the characteristics of the heavy magnesium water pyrolysis and using vacuum to reduce the partial pressure of CO2 gas in the system, the positive reaction rate of the pyrolysis reaction of heavy magnesium water is accelerated. By observation and comparison of light magnesium carbonate crystal morphology generated with certain pyrolysis temperature and different degree of vacuum, it can be concluded that the transition process of the light magnesium carbonate crystal morphology will slow down when reducing the partial pressure of CO2 gas and increasing the rate of pyrolysis reaction. When the temperature of pyrolysis reaches 50 ℃ , the reunion of light magnesium carbonate crystal will be accelerated by improving the reaction rate. The faster the reaction rate is, the more obvious the reunion phenomenon is.
出处
《盐业与化工》
CAS
2013年第2期28-30,共3页
Jounral of Salt and Chemical Industry
关键词
反应速率
热解
轻质碳酸镁
晶体
reaction rate
pyrolysis
light magnesium carbonate
crystal
