摘要
比较了 Cr Cl3 - Al Cl3 、Cr2 (SO4) 3 - Al Cl3 、Cr2 (SO4) 3 - Al2 (SO4) 3 4类铬铝溶液的稳定性、吸光率和耐碱性。结果表明 ,在一定的铝铬比范围内 ,Cr3 + 、Al3 + 之间存在着协同作用 ;首次提出了 Cr- Al异金属配合物形成的取代反应模型 ;并结合配位场理论和价键理论解释了 Cr- Al异金属配合物不稳定的原因。
The stability, absorbance and resistance to alkali of four kinds of Cr-Al solutions, which are CrCl 3-AlCl 3,CrCl 3-Al 2(SO 4) 3,Cr 2(SO 4) 3-AlCl 3 and Cr 2(SO 4) 3-Al 2(SO 4) 3, are comparatively investigated in this work. The results show that there is synergistic action between Cr 3+ and Al 3+ complex ions within certain Al / Cr mole ratio. The model of replacement reaction is put forward for the first time to explain Cr-Al multi-metal complexes forming. LFT(ligand field theory) and VBT(valence bond theory) are applied to elucidate why Cr-Al complexes is not enough stable in solution.
出处
《中国皮革》
CAS
北大核心
2003年第3期16-19,29,共5页
China Leather
基金
国家自然科学基金 (批准号 :2 0 2 760 4 3)
教育部科学技术研究重点项目 (项目号 :0 61 2 0 )
