两种五氧化二磷晶型转化及其对蒸发速率的影响  

Transformation of two different crystalline phosphorus pentoxide and its impact on evaporation rate

作　　者：赵香[1] 梅毅[2] 梁雪松[2] 罗弦[1] 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650224 [2]云南省化工研究院

出　　处：《无机盐工业》2012年第4期19-21,共3页Inorganic Chemicals Industry

摘　　要：介绍了常压下五氧化二磷的o-、o′-和h-这3种晶型一些性质和结构以及各种晶型稳定性的比较结果。为了获得蒸发速率稳定的五氧化二磷晶型,以正交斜方晶型即o-五氧化二磷为原料,直接利用马弗炉对其加热。通过实验发现,最初五氧化二磷蒸发速率过快不利于控制,而加热一定时间待五氧化二磷晶型转变为六方晶型即h-五氧化二磷时,其挥发速率变得稳定。因此利用h-五氧化二磷进行下一步实验具有很好的可操作性。Some properties, structures as well as stability of three different forms of crystalline phosphorus pentoxide（P2Os）, including o- ,o＇- ,and h-P205 under normal atmosphere were introduced.In order to obtain a phosphorus pentoxide crystal who had a stable evaporation rate,the raw material orthogonal orthorhombic type o-P205 was directly heated by muffle furnace.Through the experiment, it was found that the initial evaporation rate of 0-P205 was too fast to control, but when 0- P205 was heated till it transformed into hexagonal crystal h-P2Os,the evaporation rate bacome stable.Therefore,the next ooeration will be very easy when h-P2O5 was applied.

关 键 词：五氧化二磷 晶型转化 结构 稳定性 

分 类 号：TQ126.34[化学工程—无机化工]