Solid state reaction synthesis

Part 2 book "Fundamentals of chemical engineering thermodynamics" Includes content: modeling phase equilibrium for pure components; an introduction to mixtures; vapor liquid equilibrium; theories and models for vapor liquid equilibrium of mixtures - modified raoult's law approaches; theories and models for vapor liquid equilibrium of mixtures - using equations of state; liquid liquid, vapor liquid liquid, and solid liquid equilibrium; fundamentals of chemical reaction equilibrium; synthesis of thermodynamic principles.

416p muasambanhan06 01-02-2024 2 1   Download

In this work, we were successfully synthesized Na2Ti3O7 material by solid state reaction method which used NaOH and TiO2 as the precursors. Structural and morphological characterization of synthesized materials were confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).

10p viengels 25-08-2023 5 3   Download

In this article, zinc-doped sodium manganese oxide (NZMC) was synthesized by a conventional solid-state reaction method. Structure and morphology of the NZMC material were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energydispersive X-ray spectroscopy (EDS).

10p viengels 25-08-2023 9 3   Download

In this work, NaNi0.5Ti0.5O2 cathode materials of sodium ion batteries were synthesized by a pre-milling combined with solid-state reaction method using sodium hydroxide (NaOH), nickel (II) acetate (2(CH3COO)Ni.4H2O), and titanium dioxide (TiO2) as the precursors.

8p viberkshire 09-08-2023 6 4   Download

Solid-state reaction, co-precipitation, and sol-gel procedures were used to synthesize the Sr3Y1.95Ge3O12:0.05Eu3+ (SYGO: Eu3+) garnet structure. The morphological structure and photoluminescence properties of the samples were studied. Phosphors have morphologies and particle sizes that vary depending on the preparation.

8p viblackwidow 07-04-2023 5 3   Download

Synthesis of the magnesium type of the mineral boracite (Mg 3 B7 O13 Cl) was studied. Several parameters affecting boracite synthesis were investigated. The raw materials selected were magnesium chloride hexahydrate (MgCl 2 .6H2 O), magnesium oxide (MgO), and boron oxide (B2 O3). Reaction temperatures were selected between 600 ◦ C and 900 ◦ C. Moreover, three different reaction times of 4, 1, and 0.5 h were studied with the determined optimum molar ratio, reaction temperature, and reaction medium.

13p langthannam 29-12-2021 11 0   Download

A new double molybdate Na2Co2(MoO4)3 was synthesized via solid-state reaction and characterized by single-crystal X-ray diffraction (XRD). This compound is a new member of the lyonsite structure type. It crystallized in the orthorhombic system, space group Pnma with cell parameters a = 5.272(2) Å, b = 10.816(3) Å, and c = 18.064(3) Å. The structure can be described as a three-dimensional framework with hexagonal tunnels in which the Na+ cations lie. The obtained structural model is supported by charge distribution analysis and bond valence sum validation tools.

14p tudichquannguyet 29-11-2021 12 0   Download

The partial substitution of potassium atoms by strontium atoms in initial matrix K3Fe2(PO4)3 with formation of complex phosphates K3−2xSrx Fe2(PO4)3 (x = 0.75, 1.0, and 1.25) was determined using a solid-state reaction method. According to powder X-ray diffraction (XRD) data, the prepared phosphates with x = 1.0 and 1.25 crystallize in a cubic system (space group P213) and belong to langbeinite family compounds, while for the sample with x = 0.75 a mixture of langbeinite-type phase and a minor amount of K3Fe2(PO4)3 was obtained.

7p tudichquannguyet 29-11-2021 16 0   Download

2-Aminothiazole derivatives bear three nucleophilic centers, i.e. endocyclic N, exocyclic NH2 , and S atom in the ring system. In addition to these centers there are π -electrons in the ring system which can also expectedly be involved in some sort of coordination. To the best of our knowledge the solid state coordination chemistry of such ligands has not been fully presented in the literature.

13p tudichquannguyet 29-11-2021 18 1   Download

The existence of cation-vacancy sites in fullerides might lead to long-range ordering and generate a new vacancy-ordered superstructure. The purpose of this work is to search whether or not long-range ordering of vacant tetrahedral sites, namely superstructure emerges in nonstoichiometric K1.5Ba0.25CsC60 fulleride. Therefore, K1.5Ba0.25CsC60 with cation-vacancy sites is synthesized using a precursor method to avoid inadequate stoichiometry control and formation of impurity phases within the target composition.

8p tudichquannguyet 29-11-2021 8 1   Download

In this paper, we report on the synthesis and characterization of hydrothermally synthesized ZnSe NCs. The influences of the synthesis parameters on the structure and optical characteristics of the obtained QDs were systematically investigated. The highest quality ZnSe NCs were achieved when the Zn:Se molar ratio was 1:1 and the reaction occurred at 190˚C for 20 hours. Our study shows the perspective for a large-scale, low-cost synthesis of ZnSe NCs for applications in solid-state lighting and photovoltaic devices.

9p trinhthamhodang1218 18-03-2021 19 2   Download

A new host phosphors of LaSr2AlO5 doped with Ce and Eu was synthesized using a solid-state reaction method and the synthesis conditions were investigated. The samples were characterized by X-ray diffraction, scanning electron microscopy, photoluminescent (PL) and photoluminescent excitation (PLE) spectra. LaSr2AlO5:Ce shows a yellow emission at about 570 nm after an excitation at about 450 nm while LaSr2AlO5:Eu presents a red emission.

5p tamynhan9 02-12-2020 14 1   Download

The Tb3+ rare-earth-ion-doped Ca2Al2SiO7 material has a tetragonal phase structure that was successfully synthesized using the solid-state reaction method under optimal conditions: sintering temperature: 1280 °C; time: 60 minutes; and the B2O3 flux agent content: 4% wt. The photoluminescence spectrum of Tb3+ doped Ca2Al2SiO7 phosphor consists of narrow lines with peaks at 545, 440, 462, 494, 590, and 622 nm that correspond to 4f electronic transitions of the Tb3+ ion. The peak at 545 nm has the highest luminescent intensity.

4p nguaconbaynhay9 03-12-2020 7 1   Download

In this work, Ce3+ and Sm3+ ions doped/co-doped Ca2Al2SiO7 (CAS) phosphors were prepared by solid state reaction method at high temperature. X-ray diffraction results showed that the prepared samples had tetragonal single phases with selected synthesis conditions. Energy transfer process of Ce3+/Sm3+ pair in CAS phosphor was studied by photoluminescence (PL) and photoluminescence excitation (PLE) spectra. Emission intensity of Ce3+ in Ca2Al2SiO7:xCe3+ , (1mol%) Sm3+ phosphors clearly varied with Ce3+ concentration; and reached to maximum value at the concentration of 2 (mol%).

7p caygaocaolon8 07-11-2020 16 1   Download