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Nomenclature of the hydrotalcite supergroup;natural layered double hydroxides
LDH layered double hydroxide hydrotalcite hydrotalcite supergroup brucite nomenclature manasseite sjo¨grenite barbertonite cyanophyllite fouge`rite treⅴbeurdenite.
2013/12/6
Layered double hydroxide (LDH) compounds are characterized by structures in which layers with a brucite-like structure carry a net positive charge, usually due to the partial substitution of trivalent...
Synthesis and characterisation of hydrotalcite from bauxite residue liquor and magnesium nitrate
Synthesis characterisation hydrotalcite bauxite residue liquor magnesium nitrate
2012/3/30
The extraction of alumina from bauxite by the Bayer process produces a slurry by-product referred to as ‘bauxite residue’ or ‘red mud’. The liquid component of the slurry is highly alkaline and requir...
Synthesis of Hydrotalcite-like Compound Pillared by Hetero-polyacid Anions in a Hydrothermal System
synthesis hydrotalcite discussion
2009/11/13
Hetero-polyacid anions (PW12O403-)-pillared hydrotalcite-like compound is directly and hydrothermally synthesized by the hot solution method. FTIR and XRD show that PW12O403- has been incorporated int...
Investigation of Biodiesel Production from Canola Oil using Mg-Al Hydrotalcite Catalysts
Biodiesel transesterification Mg--Al hydrotalcite heterogeneous base catalyst
2010/4/16
Biodiesel produced by the transesterification of vegetable oils is a promising alternative fuel to diesel because of limited fossil fuel resources and environmental concerns. The use of heterogeneous ...
期刊信息
篇名
Stoichiometric synthesis of a pure ferrite from a tailored layer double hydroxide (hydrotalcite-like) precursor
语种
英文
撰写或编译
撰写
作者
Junjie Liu,Feng Li,David G. Evans,Xue Duan
第一作者单位
刊物名称
Chem. C...
二元类水滑石层板组成、结构与性能的理论研究（Theoretical Studies on Layer Composition, Structure and Properties of Hydrotalcite)
类水滑石 静电势能模型 热稳定性
2010/8/24
采用晶体学理论建立二元类水滑石(LDHs)微观结构模型与静电势能模型，将层板金属离子间距、层板电荷密度、层间阴离子间距等微观结构参数定量化，并将层间阴离子的静电势能表示成层板金属离子半径和物质的量之比、插层阴离子尺寸和电荷的函数。研究结果表明：LDHs层板金属离子间距应用离子紧密堆积来估算和孔径按阴离子平面六方点阵分布来计算是可行的；调变层板金属离子种类与物质的量之比影响层间阴离子的稳定性，势能计...
Glyphosate-Hydrotalcite Interaction as Influenced by pH
Adsorption Adsorption Mechanism Calcined Hydrotalcite Glyphosate Hydrotalcite pH
2011/12/8
Abstract: Adsorption and the mechanism of adsorption of the herbicide glyphosate [N-(phosphonomethyl) glycine] by hydrotalcite (HT) and by hydrotalcite calcined at 500°C (HT500) was studied. The value...
Ambient-Temperature Synthesis, Evolution, and Characterization of Cobalt-Aluminum Hydrotalcite-Like Solids
Anionic Clay Cation Ordering Coprecipitation EXAFS Hydrotalcite ICP-MS Solubility Product TEM Metal Contamination Solid Solution Interstratification
2011/12/7
Abstract: Double hydroxide solids precipitated homogeneously from three laboratory-synthesized aqueous solutions that simulated mildly contaminated surface or groundwater. Over a limited pH range, pre...
Interlayer structure, anion dynamics, and phase transitions in mixed-metal layered hydroxides: Variable temperature 35Cl NMR spectroscopy of hydrotalcite and Ca-aluminate hydrate (hydrocalumite)
Cl -intercalated hydrotalcite Ca-aluminate hydrate Variable temperature
2012/3/31
The Cl NMR spectroscopy of Cl -intercalated hydrotalcite and the Ca-aluminate hydrate, the presence of
hydrocalumite (Friedel°Os salt) demonstrates dynamical behavior of interlayer C
dynamical orde...
Formation of Spinel from a Hydrotalcite-Like Compound at Low Temperature: Reaction between Edges of Crystallites
Double Hydroxide Grinding Hydrotalcite Reconstruction Spinel Thermal Decomposition
2011/12/23
Abstract: The thermal decomposition behavior of hydrotalcite-like compounds (HTlcs) prepared by reconstruction of calcined HTlcs is described. From the results of X-ray diffraction (XRD), it seems tha...
Decarbonation Behavior of Mg-Al-CO3 Hydrotalcite-like Compounds during Heat Treatment
Decarbonation Heat treatment Hydrotalcite
2011/12/28
Historically, the decarbonation of Mg-Al-CO3 hydrotalcite-like compounds (HTlc) has been thought to occur between 400° and 500°C. The present work demonstrates that when HTlcs having the maximum Al co...
Formation of Hydrotalcite-like Compounds During R7T7 Nuclear Waste Glass and Basaltic Glass Alteration
Basaltic glass Experimental alteration Hydrotalcite-like compounds MgCl2-CaCl2 salt solution R7T7 nuclear waste glass Saponite
2011/12/29
Alteration experiments have been performed using RTT7 and synthetic basaltic glasses in MgCl2-CaCl2 salt solution at 190∑C. The duration of experiments ranged from 0.25 to 463 days. The alteration pro...
Synthesis and Properties of Hexacyanoferrate Interlayered in Hydrotalcite. I. Hexacyanoferrate(II)
Anion exchange FTIR spectroscopy Hexacyanoferrate(II) Hydrotalcite Interlayer chemistry Layered double hydroxides Mossbauer spectroscopy
2011/12/28
Hydrotalcite (HT) interlayered with hexacyanoferrate(II) ions ([Mg4.62Al1.52(OH)12][(Fe(CN)6)0.30-(CO3)0.29]) has been synthesized from the carbonate-HT ([Mg4.52Al1.50(OH)12][(CO3)0.77]) through doubl...
Synthesis and CO2 Adsorption Features of a Hydrotalcite-Like Compound of the Mg2+-Al3+-Fe(CN)64- System with High Layer-Charge Density
Al3+-substitution CO2 adsorption Hydrotalcite-like compound Ion exchange
2011/12/30
Hydrotalcite-like compounds (HT) with 24%–48% Al3+-substitution have been synthesized in the Mg2+-Al3+-Fe(CN)64- system. Conditioning of the synthesized and air-dried compound with K4Fe(CN)64- solutio...
Polytype Diversity of the Hydrotalcite-Like Minerals II. Determination of the Polytypes of Experimentally Studied Varieties
Hydrotalcite-like group Polytype X-ray diffraction criteria
2011/12/30
Polytype diversity of hydrotalcite-like minerals is mainly a function of the nature of the interlayer anion. Among the varieties with CO32− anions, only two- and three-layer polylypes having the...