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