نتایج جستجو برای: cerium nitrate

تعداد نتایج: 36761  

2017
Alejandro Manchado Mateo M Salgado Álvaro Vicente David Díez Francisca Sanz Narciso M Garrido

The title compound, C22H25NO5, was prepared by CAN [cerium(IV) ammonium nitrate] oxidation of the corresponding β-lactam. The dihedral angle between the benzene rings is 13.3 (4)° and the C-N-C(=O)-C torsion angle is 176.1 (6)°. In the crystal, amide-C(4) N-H⋯O and reinforcing C-H⋯O hydrogen bonds link the mol-ecules into infinite [010] chains. Further C-H⋯O hydrogen bonds cross-link the chains...

2017
Edgar R. López-Mena Carlos R. Michel Alma H. Martínez-Preciado Alex Elías-Zuñiga

In this work, nanostructured CeO2 microspheres with high surface area and mesoporosity were prepared by the coprecipitation method, in absence of a template. The reaction between cerium nitrate and concentrated formic acid produced cerium formate, at room temperature. Further, calcination at 300 °C yielded single-phase CeO2 microspheres, with a diameter in the range 0.5-2.6 μm, the surface of t...

Journal: :Dalton transactions 2014
Mohammad Mahdi Najafpour Fahime Rahimi Maryam Fathollahzadeh Behzad Haghighi Małgorzata Hołyńska Tatsuya Tomo Suleyman I Allakhverdiev

Herein, we report on nano-sized Mn oxide/carbon nanotubes, graphene and graphene oxide as water-oxidizing compounds in artificial photosynthesis. The composites are synthesized by different and simple procedures and characterized by a number of methods. The water-oxidizing activities of these composites are also considered in the presence of cerium(IV) ammonium nitrate. Some composites are effi...

2008
A. C. Bastos M. L. Zheludkevich M.G.S. Ferreira

The possibility of obtaining corrosion inhibition efficiency from the Scanning Vibrating Electrode Technique (SVET) is investigated. Results are compared with those obtained by Electrochemical Impedance Spectroscopy (EIS) for the inhibition of iron and zinc with cerium nitrate and 1H-benzotriazole. Examples of good and bad estimations are given and an interpretation for the discrepancies observ...

Journal: :Journal of the American Chemical Society 1949

Journal: :Dalton transactions 2014
Mohammad Mahdi Najafpour Małgorzata Hołyńska Amir Nasser Shamkhali Sayed Habib Kazemi Warwick Hillier Emad Amini M Ghaemmaghami Davood Jafarian Sedigh Atefeh Nemati Moghaddam Rahim Mohamadi Sasan Zaynalpoor Katrin Beckmann

Eighteen Mn complexes with N-donor and carboxylate ligands have been synthesized and characterized. Three Mn complexes among them are new and are reported for the first time. The reactions of oxygen evolution in the presence of oxone (2KHSO5·KHSO4·K2SO4) and cerium(iv) ammonium nitrate catalyzed by these complexes are studied and characterized by UV-visible spectroscopy, X-ray diffraction spect...

Journal: :international journal of nanoscience and nanotechnology 2010
j. jasmine ketzial a. samson nesaraj

in order to reduce the operating temperature of solid oxide fuel cells (sofcs), novel electrolyte materials based on ceo2 and baceo3 are being developed in the scientific realm. in this context, we propose a new methodology for preparing the nano-ceramic composite materials such as bace0.9gd0.9o3-δ – ce0.9gd0.9o2-δ (bcgo–cgo) and bace0.8sm0.2o3-δ – ce0.8sm0.2o2-δ (bcso – cso) as possible elec...

B. Sathyaseelan K. Sivakumar, S. Sambasivam T. Alagesan

Nanocrystalline particles of Cerium Oxide (CeO2) have been prepared by the chemical precipitation method using Cerium nitrate and Urea with a molar ratio of 1:2. The results revealed that the formation of CeO2 fine particles is influenced by molar ratio of metal nitrates to fuel. Well faceted CeO2 nanoparticles, were synthesized by thermal-assisted dissociation ...

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