权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Effect of organic ligands on the formation of non-and para-crystalline aluminosilicates

有机配体对非晶态和准晶态铝硅酸盐形成的影响

基本信息

批准号：
63470106
负责人：
INOUE Katsuhiro
金额：
$ 2.94万
依托单位：
IWATE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

1. Effect of organic ligands on the interaction of hydroxy- aluminum (HA) ions with orthosilicle acid: In the presence of organic ligands such as low molecular weight organic acids and humic substances such as fulvic and humic acids, the interaction of HA ions with orthosilicic acid and the subsequent formation of allophane and imogolite were significantly inhibited, resulting in the formation of Al-organo complexes and allophane-like constituents.2. Fixation of hydroxyaluminosilicate (HAS) ions on montmorillonite and adsorption of humic substances by HAS- and HA-montmorillonite complexes: Montmorillonite strongly fixed HAS ions in its interlamellar spaces. The fixation of HAS ions by montmorillonite caused the alteration of physical and chemical properties of the clay. The fixation of HAS ions by montmorillonite results in the decrease of its swelling capacity and cation exchange capacity. However, the amounts of humic substances and phosphate were greatly enhanced by the complexation … More of HAS ions with montmorillonite.These results obtained in this study reveal that the accumulation of humus in Ap and buried A horizons of Andosols and a Bh horizon of Spodzols inhibits the formation of allophane and imogolite and favors the formation of allophane-like constituents with low Si/Al atomic ratios and hydroxy Al-humus complexes. HAS and HA ions were major active Al components contributed to humus accumulation in allophanic and nonallophanic Andosols.3. Composition and behavior of Al ions and colloidal aluminosilicates in acidified terrestrial waters: Aluminum ions such as Al^<3+>, HA ions, and HAS ions were identified in seveh acidified terrestrial waters in Tohoku.Relatively high Si/Al atomic ratios of the waters, but low Si/Al atomic ratios of HAS lons isolated suggest the influence of organic ligands on the formation of HAS ions in the water. The formation and Composition of colloidal aluminosilicates in the waters indicate that these are allophane and proto-imogolite allophane. Less

1. 有机配体对羟基铝（HA）离子与正硅酸相互作用的影响：在有机配体如低分子量有机酸和腐植酸、腐植酸等腐植酸存在的情况下，HA离子与正硅酸的相互作用以及随后形成的allophane和imogolite被显著抑制，导致Al-organo配合物和allophane类组分的形成。羟铝硅酸盐（HAS）离子在蒙脱土上的固定作用以及HAS-和ha -蒙脱土配合物对腐殖质物质的吸附作用：蒙脱土在层间空间中对羟基铝硅酸盐（HAS）离子有很强的固定作用。蒙脱土对HAS离子的固定作用使粘土的理化性质发生了变化。蒙脱土对HAS离子的固定作用导致其溶胀能力和阳离子交换能力下降。而与蒙脱土络合后，腐殖质和磷酸盐的含量明显增加。研究结果表明，在安多索的Ap层和埋藏A层以及Spodzols的Bh层中，腐殖质的积累抑制了allophane和imogolite的形成，有利于形成低Si/Al原子比的类allophane成分和羟基Al-腐殖质配合物。羟基磷灰石（HAS）和羟基磷灰石（HA）离子是促成溶土和非溶土腐殖质积累的主要活性铝组分。酸化陆相水体中Al离子和胶体硅酸盐的组成和行为：在东北7个酸化陆相水体中鉴定出Al^<3+>、HA离子和HAS离子等铝离子。水中相对较高的Si/Al原子比，而分离的HAS long的Si/Al原子比较低，这表明有机配体对水中HAS离子形成的影响。水中胶体硅铝酸盐的形成和组成表明它们是铁矾和原铁长石铁矾。少