摘要
对不同Al/Fe摩尔比的聚合氯化铝铁样品进行了热重分析及红外光谱测定。结果表明 :热重分析中计算得出PAFC中配位水分子数与红外光谱测定PAFC中H—OHδ弯曲振动峰强随Al/Fe摩尔比的变化趋势是一致的。当Al/Fe摩尔比大于 6∶4后 ,Al -Fe羟合共聚体形成体型结构 ,所以PAFC中配位水分子数保持相对稳定 ,并与中心离子的键合作用加强 ,溶液能长时间保持稳定。
TG-DTG analysis of polyaluminum ferric chloride (PAFC) with different Al/Fe molar ratio was studied and compared with FTIR spectra of PAFC . The curves change of numbers of coordinating water in PAFC by thermal analysis are same with the intensity change of δ(H—OH) at 1610 ～1630 cm -1 vs Al/Fe molar ratio.And the amounts of coordinating water in Al-Fe hydroxyl co aggragated compounds of PAFC are nearly no longer change, as well as, the force of banding of coordinating water with center atoms is increasing when Al/Fe molar ratio >6:4. These confirmed there may be space structral Al-Fe hydroxyl co aggragated compounds and these structure of making the PAFC aqua solution more stable.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
2001年第2期60-62,共3页
Journal of Sichuan University (Engineering Science Edition)
基金
司法部 96年度科技项目! (0 5 8)
贵州省计委资助项目! (黔计委科 (1998) 3 73 )
关键词
聚合氯化铝铁
热重分析
配位水含量
稳定性
红外光谱
polyaluminum ferric chloride
TG-DTG analysis
amounts of coordinating warter
Stability
FTIR
