理学 >>> 地质学 >>> 数学地质学 地质力学 动力地质学 矿物学 矿床学与矿相学 岩石学 岩土力学 沉积学 古地理学 古生物学 地层学与地史学 前寒武纪地质学 第四纪地质学 构造地质学 大地构造学 勘查地质学 水文地质学 遥感地质学 区域地质学 火山学 石油与天然气地质学 煤田地质学 实验地质学 地球化学 地质学其他学科
搜索结果: 1-11 共查到地质学 Lepidocrocite相关记录11条 . 查询时间(0.1 秒)
Abstract: The effect of phosphate on the formation of Fe oxides from Fe(II) salts is important because phosphate is a ubiquitous anion in natural environments. For this reason, the products formed by ...
Abstract: We investigated the crystallization of ferrihydrite prepared by hydrolysis of Fe(NO3)3 solutions containing phosphate. Crystallization was studied at different pH (3–9), temperatures (298, 3...
TheuptakeofCuandCdinaqueoussolutionbyinteractionwiththesurfacesofcare- fullysynthesized?nelysizedparticlesofgoethite,lepidocrocite,mackinawite,andpyrite wasmeasuredasafunctionofinitialmetalconcentra...
Infrared (IR) spectroscopy, in combination with magnetic methods, was used to study the thermally induced transformation of synthetic lepidocrocite (γ-FeOOH) to maghemite (γ-Fe2O3). Magnetic analyses ...
Lepidocrocite samples, γ-FeOOH, containing 0–10 mole % Al-for-Fe substitution were synthesized at 15°C and pH 8 by oxidizing mixed FeCl2-AlCl3 solutions. The unit-cell parameters a, b, and c were meas...
The rate of dissolution of akaganéite in HCl increased with time over the bulk of the reaction leading to a sigmoid dissolution vs. time curve. The bulk of the dissolution of lepidocrocite could be de...
Diffractograms of lepidocrocites formed from the oxidation of Fe(II) chloride solutions at pH 7 and 25∑C showed differential line broadening with (0k0) reflections being much sharper than (hk0) or (hk...
The presence of Al hydroxy species in solution during the synthesis of lepidocrocite had been previously found to influence the reaction towards goethite formation. However, under certain conditions, ...
The Occurrence of Lepidocrocite in Two Well-Drained Ontario Soils     Anaerobic  Iron  Goethite  Lepidocrocite  Soil       font style='font-size:12px;'> 2012/2/10
Lepidocrocite was identified associated with mica particles and in the clay fraction of two well-drained Ontario soils developed on a granite and a granite-gneiss. The occurrence of lepidocrocite is r...
The mechanism of the transformation of lepidocrocite (γFeOOH) to goethite (αFeOOH) has previously been established and the effect of silicate on the transformation was investigated. Rather than comple...
The Transformation of Lepidocrocite to Goethite     Transformation  Lepidocrocite  Goethite       font style='font-size:12px;'> 2012/2/17
The conversion of lepidocrocite (γFeOOH) to its more stable polymorph, goethite (αFeOOH) was followed by observing changes in crystal morphology, oxalate solubility, surface area and X-ray diffraction...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...