复合增聚型铁铝无机高分子絮凝剂PAFCS的红外光谱研究  

INFRARED SPECTROSCOPY STUDY ON AN INORGANIC POLYMERIC AGGREGATING AGENT PAFCS WITH Fe(Ⅲ)+Al(Ⅲ)COMPLEX

作　　者：刘万毅[1] 吴尚芝[1] 

机构地区：[1]宁夏大学化学化工系

出　　处：《宁夏大学学报（自然科学版）》1996年第2期36-41,共6页Journal of Ningxia University(Natural Science Edition)

摘　　要：利用煤矸石及硫铁矿渣制备出了一种新型无机高分子絮凝剂聚硫酸氯化铁铝（ＰＡＦＣＳ），研究了ＰＡＦＣＳ的红外（ＩＲ）光谱结构特征．ＩＲ谱分析表明ＰＡＦＣＳ是Ｆｅ（Ⅲ）十Ａｌ（Ⅲ）与羟基（－ＯＨ）以双羟桥为主结构连接的较复杂的高聚物．其ＩＲ图谱峰形与α－Ｆｅ２Ｏ３，α－ＦｅＯＯＨ及Ｆｅ（ＯＨ）３等明显不同．比较了ＰＡＦＣＳ，ＰＡＣ，ＰＦＳ，ＰＡＣＳ的光谱特征，表明ＰＡＦＣＳ与已知文献报道的絮凝剂ＰＡＣ，ＰＦＳ，ＰＡＣＳ有类似性，即由３１００～３６００ｃｍ（－１）处的ＯＨ伸缩振动及１６００～１６５０ｃｍ（－１）Ｈ－Ｏ－Ｈ弯曲振动的畸变，表明有结构羟基存在；在１１００ｃｍ（－１）附近Ｍ－ＯＨ－Ｍ伸缩振动峰为中等强度峰，证明有铁羟基或铝羟基以及聚合态存在．Polyaluminium ferric chloride with sulfate ion increasing polymeric (PAFCS),anew type of inorganic polymeric flocculant, is prepared in acid soaking solutions from gangue-a kind of waste from coal--mine, or from sulphide iron ore slag--a kind of waste from sulphuric acid industry. The PAFCS solid samples were studied with iR spectroscopy.The restilts showed that the structure was more complicated polymeric with OH bridge.its iRspectroscopy was diffrent from that of auFe,O,a-FeOOH and Fe(OH),but similar to PAC,PFS, PACS in literature reported. The 7--OH stretching vibration wave number at 3100-3600cm(-1)and H-OH bending vibration at 1600～ 1650cm lshowed the connectoins with OHgroups between the Fe or Al atom,ie,the presence of structural hydroxyl in PAFCS. The Fe-OH-Fe or Al-OH-Al bending vibration frequency at about 1100cm(-1)was mid-strengthand demonstrated the Fe-OH or Al -OH and the existence of polymeric structure.

关 键 词：絮凝剂 红外光谱 PAFCS 无机高分子 聚铁 聚铝 

分 类 号：TQ324.4[化学工程—合成树脂塑料工业]