HIGH YIELD SYNTHESIS METHODS FOR PRODUCING ORGANIC SALTS OF STRONTIUM
申请人:Christgau Stephan
公开号:US20090137678A1
公开(公告)日:2009-05-28
New organic salts of strontium and methods of synthesizing such salts with high purity, high yields and with short processing times, at neutral conditions and at low reaction temperature, such as a temperature at or below 50° C.
Stabilization of the Mixed Valence Cu(III)/Cu(IV) in the Perovskite Lattice of La1-xSrxCuO3 under High Oxygen Pressure
作者:S. Darracq、S.G. Kang、J.H. Choy、G. Demazeau
DOI:10.1006/jssc.1995.1013
日期:1995.1
A new mixed valence Cu(III)/Cu(IV) has been stabilized in the three-dimensional lattice of the perovskite-type oxide La1-xSrxCuO3 (0 ≤ x ≤ 0.25). Chemical analysis and XPS studies confirm the mixed valence. This compound shows metallic properties with a broadening of the conduction band compared to that of LaCuO3. Such behavior can be explained either by the increase of the covalence of the average
一种新的混合价铜(III)/铜(IV)已经在钙钛矿型氧化物的三维晶格被稳定的La 1- X的Sr X的CuO 3(0≤ X ≤0.25)。化学分析和XPS研究证实了混合价。与LaCuO 3相比,该化合物具有导带扩宽的金属特性。可以通过增加平均Cu-O键的共价或通过减少Sr(II)代替La(III)引起的结构变形来解释这种行为。在温度低至4 K的材料中未检测到超导特性。
Ghandour, Mahmoud A.; Mansour, Hesham; Abu El-Wafa, Moustafa H. M., Journal of the Indian Chemical Society, 1988, vol. 65, p. 716 - 718
作者:Ghandour, Mahmoud A.、Mansour, Hesham、Abu El-Wafa, Moustafa H. M.、Khodary, Mahmoud
DOI:——
日期:——
Microwave‐Assisted Hydrothermal Synthesis, Crystal Structure, and Thermal Decomposition of Strontium Citrate Monohydrate Sr
<sub>3</sub>
(C
<sub>6</sub>
H
<sub>5</sub>
O
<sub>7</sub>
)
<sub>2</sub>
·H
<sub>2</sub>
O
作者:Matthias Hämmer、Vivien Wessels、Romy Ettlinger、Henning. A. Höppe
DOI:10.1002/zaac.202000117
日期:2021.2.24
Microcrystalline strontium citrate monohydrate Sr3(C6H5O7)2·H2O was prepared by a microwave‐assisted hydrothermal synthesis. Single‐crystal X‐ray structure determination (P1, a = 10.0572(4), b = 10.1506(5), c = 10.8531(5) Å, α = 89.642(2)°, β = 67.156(2)°, γ = 62.367(2)°, 3040 independent reflections, 353 refined parameters, wR2 = 0.066) revealed three different Sr sites coordinated eight‐, nine and
通过微波辅助水热合成法制备了柠檬酸锶一水合物Sr 3(C 6 H 5 O 7)2 · H 2 O微晶。单晶X射线结构确定(P 1,a = 10.0572(4),b = 10.1506(5),c = 10.8531(5)Å,α = 89.642(2)°,β = 67.156(2)°,γ = 62.367(2)°,3040次独立反射,353个精确参数,wR 2= 0.066)揭示了三个不同的Sr位点,它们由两个晶体学不同的柠檬酸盐分子(分别包含东方紊乱)而不是晶体水分子协调为八倍,九倍和十倍。这些发现得到了能量色散X射线光谱,粉末XRD,红外光谱和热分析的支持。此外,将后三种方法应用于迄今仅有的具有已知晶体结构Sr 3(C 6 H 5 O 7)2 · 5H 2 O的柠檬酸锶水合物,并比较了这两种化合物,特别是关于它们作为前体的可能用途。
Microcystin-LR removal in water using the system SrZrXSn1-XO3: influence of B cation on the structural organization of perovskite
作者:Luciano B. Ramo、Adriele G. Da Silva、Cecília X. Pereira、Cleber Silva Torres、Erivan P. S. Júnior、Gaspar C. Martins、Maria Da Conceição De M. Torres、Mary C. F. Alves、Simone S. Simões
DOI:10.1007/s11696-020-01423-8
日期:2021.4
According to the concentration of toxins in water reservoirs, cyanotoxins can cause severe intoxication. In this way technologies must be developed to remove or decrease the concentration of the some toxins from water. Furthermore, it is necessary to ensure that the byproduct of the processes used have low or no toxicity. One of the methodologies studied to this purpose is the Advanced Oxidation Processes and mixed oxides, that have attracted the attention due mainly to their good yields, low price and thermal stability. The efficiency of a photocatalytic process during degradation of organic pollutants depend on several factors. The present work has as its main objective to evaluate the photocatalytic performance of modified SrZrxSn1-xO3 oxides for MC-LR degradation in water supply using a Box–Behnken design. The oxides presented is novel and innovative product. The preparation of the material by chemical solution method and the application to microcystin degradation are novelty reported by the first time at this paper. The significance of some experimental factors as well as the interaction among them was studied. In addition, the cytotoxicity of the MC-LR degradation byproduct was evaluated and a degradation route suggested.