scholarly journals Complex of Tris(Phenanthroline)Cobalt(II)Trifluoroacetate: Characterisation and Powder XRD Analysis

2019 ◽  
Vol 35 (5) ◽  
pp. 1500-1507
Author(s):  
Isana Supiah Yosephine Louise ◽  
Savetsilla Nabila ◽  
Kristian Handoyo Sugiyarto
Keyword(s):  
Aqueous Solution ◽  
Xrd Analysis ◽  
Electronic Configuration ◽  
Powder Xrd ◽  
Main Mode ◽  
Orbital Contribution ◽  
Triclinic Crystal System ◽  
Infrared Spectral ◽  
Powder Xrd Analysis ◽  
Sodium Trifluoroacetate

The powder complex of tris(phenanthroline)cobalt(II) trifluoroacetate (TFA) has been prepared by interaction of cobalt(II) nitrate, phenanthroline (phen) in aqueous solution with drops of ethanol, and an excess of saturated aqueous solution of sodium trifluoroacetate, whereupon the yellowish powder was produced. AAS measurment for the metal content, equivalent conductance (1:2), and TGA-DTA of the powder suggest the corresponding formula of [Co(phen)3](TFA)2.5H2O. The efffective magnetic moment of 4.9 BM indicates the high-spin nature of this complex which corresponds to three unpaired electrons in the electronic configuration of Co(II) with significantly higher than the spin only value due to the orbital contribution. UV-Vis spectrum of the complex reveals the d-d spin-allowed transition bands as well as the MLCT and intraligand band. The estimating transition energy ratio of 2.04 for ν2/ν1, is clearly in the range for octahedral configuration. The infrared spectral property indicates the main mode of vibrations for the functional groups of ligand phen and TFA, and thus supports strongly the formula proposed for this complex. The corresponding powder XRD was then refined using Rietica-Le Bail method and found to be fit as triclinic crystal system with space group of PĪ.

Plutonium Pyrochemical Salts Oxidation Using Vanadium Oxide

1998 ◽  
Vol 547 ◽  
Author(s):  
Donna M. Smith ◽  
Mary P. Neu ◽  
Eduardo Garcia ◽  
Vonda R. Dole
Keyword(s):  
Vanadium Oxide ◽  
Xrd Analysis ◽  
Powder Xrd ◽  
Powder Xrd Analysis ◽  
Salt Matrix

AbstractThis paper presents results from the oxidation of PuCl3 with two-thirds, one, and two equivalents of V2O5 and the oxidation of Pu° with two and three equivalents of V2O5. All of the PuCl3 reactions were successful in that little or no starting materials remained and the major plutonium reaction product was PuO2. There is no evidence that V is reduced to V(II) or V°. According to powder XRD analysis, the bottom layers of all three reactions are identical, the middle layers contain different phases, and phases in the top layer of the oxidation with one equivalent of V2O5 is contained in the top layer from the oxidation with two-thirds equivalent of V2O5. The Pu° oxidations are more complex than the PuCl3 oxidations. More unreacted Pu° remains in the reaction using three equivalents of V2O5 than the reaction using two equivalents of V2O5. The lack of predictability of these reactions may be a result of the source of Pu° used in our experiments. The presence of soluble Pu(III) and the relative absence of PuO2 in all the Pu° reactions suggests V2O5 does not oxidize Pu° to Pu(IV) under these conditions. Chlorine is detected in the off-gas of the Pu° oxidations, indicating the salt matrix participates in the reaction.

SYNTHESIS AND CHARACTERISATION OF Ba5Cu3Oy

1996 ◽  
Vol 10 (01n02) ◽  
pp. 29-30
Author(s):  
L.K. KALIYAPERUMAL ◽  
K. JEYABALAN
Keyword(s):  
Xrd Analysis ◽  
Lattice Parameters ◽  
Powder Xrd ◽  
Orthorhombic Structure ◽  
Powder Xrd Analysis

Synthesis and characterisation of Ba 5 Cu 3 O y compound is reported here. Powder XRD analysis shows that the system belongs to orthorhombic structure and the lattice parameters are a=8.664(8) Å, b=8.931(2) Å, c=9.072(9) Å.

scholarly journals Reusable Nanocatalyst: Zirconia and Sulfated Zirconia

2014 ◽  
Vol 36 ◽  
pp. 295-302
Author(s):  
Mitesh B. Gondaliya ◽  
Tushar Maheta ◽  
Mayank J. Mamtora ◽  
Manish K. Shah
Keyword(s):  
Sulfated Zirconia ◽  
Catalytic Amount ◽  
Xrd Analysis ◽  
Solvent Free ◽  
Powder Xrd ◽  
Microwave Method ◽  
Solvent Free Conditions ◽  
Powder Xrd Analysis ◽  
Ft Ir

1,5-benzodiazepines have been synthesized by Nano Zirconia and Nano Sulfated Zirconia in solvent free conditions. Synthesis was carried out by conventional as well as microwave method. Benzodiazepines were synthesized by reacting o-phenylenediamine and few ketones in the presence of catalytic amount of Nanoparticles. Particles used were sized in between 53-100 nm. Nanoparticles were characterized by FT-IR, DLS and powder XRD analysis.

Powder XRD analysis and catalysis characterization of ultra-small gold nanoparticles deposited on titania-modified SBA-15

2005 ◽  
Vol 6 (6) ◽  
pp. 404-408 ◽  
Author(s):  
Wenfu Yan ◽  
Valeri Petkov ◽  
Shannon M. Mahurin ◽  
Steven H. Overbury ◽  
Sheng Dai
Keyword(s):  
Gold Nanoparticles ◽  
Xrd Analysis ◽  
Powder Xrd ◽  
Powder Xrd Analysis

Decolourization of Reactive Dye from Aqueous Solution using Electrocoagulation: Kinetics and Isothermal Study

2019 ◽  
Vol 233 (10) ◽  
pp. 1447-1468 ◽  
Author(s):  
Kajal Gautam ◽  
Sushil Kumar ◽  
Suantak Kamsonlian
Keyword(s):  
Aqueous Solution ◽  
Energy Consumption ◽  
Correlation Coefficient ◽  
Batch Reactor ◽  
Research Work ◽  
Electrical Energy ◽  
Xrd Analysis ◽  
Reactive Dye ◽  
Electrical Energy Consumption ◽  
Operational Parameters

Abstract Reactive dyes are essential materials for the modern lifestyle due to rapid industrialization and urbanization, but they cause adverse effects on the environment. This research work aimed to decolourize the synthetic aqueous solution containing Reactive Black B (RBB) dye using electrocoagulation (EC) process with iron electrodes in batch reactor. The effect of operational parameters such as initial pH (3–9), the distance between electrodes (0.5–2 cm), current density (1.1–8.4 mA/cm2) and initial dye concentration (100–400 mg/L), was investigated in the presence of sodium chloride to maintain the conductivity of electrolytes. Under optimal value of process parameters, high decolourization (99.6%) was obtained at 25 min. The experimental data showed that pseudo-second order kinetics with a correlation coefficient (R2 = 0.97) and Sips isotherm with a correlation coefficient (R2 = 0.98) were found to be well fitted for kinetic and adsorption equilibrium models, respectively. The economic efficiency was also calculated on the basis of electrical energy consumption (EEC), specific electrical energy consumption (SEEC), and current efficiency, respectively. Moreover, characterization of EC generated sludge was also carried out by proximate analysis, IR spectra and XRD analysis. The results revealed that EC process using Fe electrode is quite efficient and clean process for decolourization of reactive dye from aqueous solution.

scholarly journals Adsorption of As(V) from Aqueous Solution on Chitosan-Modified Diatomite

2020 ◽  
Vol 17 (2) ◽  
pp. 429 ◽  
Author(s):  
Qintao Yang ◽  
Liang Gong ◽  
Lili Huang ◽  
Qinglin Xie ◽  
Yijian Zhong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Xrd Analysis ◽  
Optimal Value ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Adsorption Desorption ◽  
Modified Diatomite

A novel chitosan (CS)-modified diatomite (Dt) was prepared by a simple mixture in the mass ratio to remove As(V) from aqueous solution in this research. The CS-modified Dt adsorbent was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD) analysis. The parameters to influence the adsorption of As(V) ion were studied under such conditions as kinetics, adsorption isotherm, and pH effect. The results revealed that adsorption of As(V) was initially rapid and the equilibrium time was reached after 40 min. The optimal value of the pH was 5.0 for better adsorption. The equilibrium data were well fitted to the Langmuir isotherm compared to the Freundlich isotherm, and exhibited the highest capacity and removal efficiency of 94.3% under an initial As(V) concentration of 5 mg/L. The kinetic data were well described by the pseudo-second-order model. In addition, 0.1 M NaOH has the best desorption efficiency of As(V) adsorbed on CS-modified Dt, and the removal efficiency of As(V) was still higher than 90% when after six adsorption-desorption cycles. These results showed that the CS-modified Dt could be considered as a potential adsorbent for the removal of As(V) in aqueous solution.

PREPARATION AND CHARACTERIZATION OF SOME BINARY AND TERNARY METAL COMPLEXES OF IMIDAZOLE AND AMINO ACIDS

1966 ◽  
Vol 44 (14) ◽  
pp. 1637-1641 ◽  
Author(s):  
G. N. Rao ◽  
N. C. Li
Keyword(s):  
Aqueous Solution ◽  
Amino Acid ◽  
Metal Complexes ◽  
Proton Magnetic Resonance ◽  
Spectral Studies ◽  
Visible Spectra ◽  
Infrared Spectral ◽  
Ternary Metal ◽  
Ternary Metal Complexes

Five new ternary metal complexes containing imidazole and glycylglycine or amino acid have been prepared and characterized by proton magnetic resonance and infrared spectral studies. Seven new binary metal complexes have also been prepared and studied. The isolation of Cd(imidazole)6Cl2•H2O and Ni(imidazole)6-Cl2•4H2O provides evidence that the coordination number of these metal ions to imidazole in the solid state is six. The visible spectra of the Ni(II) complexes of amino acid and imidazole show that all these are octahedral in aqueous solution.

Synthesis of Zeolite Membranes from Coal Fly Ash

2011 ◽  
Vol 383-390 ◽  
pp. 1749-1752
Author(s):  
Shigeo Shirakura ◽  
Shukuhei Kojima ◽  
Kazuhiro Tanaka ◽  
Hidetoshi Kita
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Hydrothermal Treatment ◽  
Coal Fly Ash ◽  
Xrd Analysis ◽  
Organic Liquids ◽  
Zeolite Membranes ◽  
Sem Observation ◽  
Porous Supports ◽  
Optimized Conditions

Zeolite membranes were successfully synthesized from coal fly ash by hydrothermal treatment onto 10-cm-long tubular porous supports. The membranes were characterized from XRD analysis, SEM observation and the pervaporation performance. Under the optimized conditions, LTA-type membrane from coal fly ash showed fairly efficient for the dehydration of organic liquids. The maximum selectivity reached more than 3000 with accompanying flux as high as 3.0 kg/(m2•h) for separation of 90 wt% EtOH aqueous solution at 75 °C.

FT-IR Spectroscopic and XRD Studies on Tris-Thiourea Strontium Chloride Single Crystals

2011 ◽  
Vol 8 (1) ◽  
pp. 201-204
Author(s):  
H. O. Jethva ◽  
R. R. Hajiyani
Keyword(s):  
Single Crystals ◽  
Xrd Analysis ◽  
Wave Number ◽  
Strontium Chloride ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Number Range ◽  
Aqueous Solvent ◽  
Powder Xrd Analysis ◽  
Ft Ir

There are various nonlinear optical materials having crystalline nature and find various applications in science and technology. Tris-thiourea strontium chloride was synthesized and single crystals were grown by the slow solvent evaporation technique using aqueous solvent. The grown crystals were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), and X-ray diffraction analysis (XRD). The FT-IR spectra of these crystals were recorded in the wave number range 400-4000 cm-1 which reveals the presence of various functional groups. The powder XRD analysis suggested orthorhombic crystal structure.

Sign in / Sign up

Export Citation Format

Share Document