Mixed oxide

Sugarcane bagasse ash (SCBA) is an industrial waste that consists of silicon oxides, calcium, aluminum, iron, magnesium, and alkali metal oxides. The composition and structure of thermomechanical treated SCBA was analyzed by X-ray fluorescence (XRF), Scanning Electron Microscopy (SEM) and X-Ray diffraction (XRD). Thermomechanical treated SCBA was mixed with clay, quartz and feldspar at different compositions according to an appropriate mixing ratio and using this mixture for the production of dry pressed ceramic tiles.

6p dianmotminh02 03-05-2024 5 1   Download

Ebook "Nanomaterials preparation by thermolysis of metal chelates" focuses on the thermal transformations of various types of metal chelates, e.g. low molecular weight and polymeric metal chelates, coordination polymers and metal-organic frameworks. It analyzes the major advances and the problems in the preparation of metal oxide materials, mixed-oxide nanocomposites, carbon materials and polymer derived non-oxide nanocomposites by the thermolysis of different metal chelates.

563p tracanhphuonghoa1007 22-04-2024 11 3   Download

Ebook "Methane combustion over lanthanum-based perovskite mixed oxides" presents current research into the catalytic combustion of methane using perovskite-type oxides (ABO3). Catalytic combustion has been developed as a method of promoting efficient combustion with minimum pollutant formation as compared to conventional catalytic combustion. Recent theoretical and experimental studies have recommended that noble metals supported on (ABO3) with well-ordered porous networks show promising redox properties.

123p nhanphanguyet 28-01-2024 8 2   Download

In the present investigation, GNS have been prepared by an aqueous anodic exfoliation of pencil graphite in an acidic medium at different dc voltages (5 Ve12 V). The GNS prepared at optimum voltage were mixed with polyaniline (PANI) polymer and drop casted on an indium tin oxide (ITO)/Polyethylene terephthalate (PET) substrate to study the I-V characteristics and to measure the band gap of composites.

7p viberbers 09-08-2023 4 3   Download

Series of thin films of single-, bi- and tri-layered structure consisting of Ti, V, TiO2 and V2O5 layer and/or mixed TieVeNi layer with different layer sequences and thicknesses were prepared by the sputtering technique on Si and SiO2 substrates.

6p viberbers 09-08-2023 4 3   Download

The blend of waste cooking oil and rapeseed oil was studied as an alternative to mineral oil in transformers. Waste cooking oil after filtering, neutralizing and drying was mixed with refined rapeseed oil. The ratio between waste cooking oil and rapeseed oil was determined based on the pour point.

9p viberkshire 09-08-2023 6 3   Download

Voltage controlled oscillator (VCO) is one of the most important basic blocks for analog, digital as well as in mixed signal circuits. This paper presents a new technique to improve the performance of ring oscillators. A VCO with large tuning range and variable duty cycle is designed using 90nm complementary metal-oxide-semiconductor (CMOS) technology with supply voltage of 1.8Vp-p.

4p vifalcon 16-05-2023 7 2   Download

This paper presents the steady-state analysis results of the OECD/NEA and U.S. NRC PWR MOX/UO2 (MOX: Mixed Oxide) Core Transient Benchmark with the modern MCNP6 Monte Carlo code based on the up-to-date ENDF/B-VII.1 nuclear data library.

9p vicedric 08-02-2023 8 3   Download

Herein, a performance analysis of La-doped copper-based catalysts (CuO/ZrO2 /La-Al2 O3 ) in methanol steam reforming (MSR) was conducted and compared with a commercial low temperature water-gas shift catalyst (HiFUEL W220) to produce H2 with low CO selectivity. The physicochemical properties of as-obtained catalysts were characterized by N2 adsorption, XRD, and ICP-OES. Effect of calcination temperature (750 ℃ and 1000 ℃) on the properties of mixed oxide support (La-Al2 O3 ) were discussed based on catalytic activity.

12p lyhuyenthu 31-01-2023 5 2   Download

In this study, ternary mixed oxide catalysts containing Al2O3-MoO3-MgO and Al2O3-MoO3-WO3 were prepared with a changing ratio of MoO3:Al2O3 between 0.05 and 20.00. All catalysts showed 100% selectivity towards propene during the conversion of propan-2-ol at temperatures between 220 and 400 °C. The catalysts prepared from WO3 possessed very strong acid sites, which cause higher catalytic activity than catalysts prepared from MgO.

12p lyhuyenthu 31-01-2023 4 2   Download

Polysaccharide TEMPO-oxidation was monitored using automatic continuous online monitoring of polymerization reactions (ACOMP). The products of oxidation, obtained at different pHs (9, 7 and 5) and different concentrations of catalyst TEMPO, were evaluated by Automatic Continuous Mixing (ACM) and Size Exclusion Chromatography (SEC).

8p vihermione 06-01-2023 4 2   Download

A simulation-based study concerning three non-destructive approaches by which water in spent nuclear fuel assemblies might be quantified with neutrons is described. Three fuel types have been considered: thirty-six spent Advanced Gas-cooled Reactor (AGR) fuel pins contained in a stainless-steel can; a prototype fast reactor (PFR) spent fuel assembly and a light water reactor (LWR) spent fuel assembly – with the PFR and LWR assemblies containing mixed oxide fuels.

25p vironald 15-12-2022 13 4   Download

The main of this research is to solve the problems of the mixing of fluids in microchannels. The aim is to improve the mixing efficiency of the microchannel by employing the piezoelectric actuator. The objectives of the project are to, producing ZnO (Zinc Oxide) thin films, preparing the microchannel with desired dimensions and examining the mixing efficiency of the microchannel by employing the piezoelectric actuator.

9p vimelindagates 18-07-2022 10 2   Download

Magnesium borates can be used as detergent compounds or hydrocarbon catalyzers and in the ceramics industry for superconductor material manufacture owing to their high elastic coefficient and resistance to corrosion at high temperatures. In the present study, the synthesis of magnesium borate was facilitated via a novel ultrasonic method of mixing and the identification and characterization of the material were carried out via X-Ray diffraction (XRD), Fourier transform infrared (FT-IR), and Raman spectroscopies, and the B2 O3 content was determined through titration.

14p langthannam 29-12-2021 12 0   Download

High density polyethylene (HDPE) was compounded with thermally exfoliated graphene oxide (TEGO) by thermokinetic mixing in a short time. High shear rates during the compounding process provided high exfoliation and proper dispersion of graphene layers in the polymer matrix. Different TEGO/polymer ratios were used to get efficient melt mixing. Structural analysis by spectroscopic techniques confirmed the exfoliation of TEGO sheets and the coverage of their surfaces by HDPE chains.

10p langthannam 29-12-2021 5 1   Download

In this study, the SCALE/TRITON code (based on deterministic method) and the Serpent 2 code (based on Monte Carlo method) were utilized to prepare the group constants of the pressurized water reactor (PWR) mixed-oxide (MOX) fuel assemblies for transient analyses of PWR MOX fueled cores in normal operation and control rod ejection accident condition with 3D reactor kinetics codes.

10p meyerowitz 25-12-2021 7 0   Download

This paper presents the steady-state analysis results of the OECD/NEA and U.S. NRC PWR MOX/UO2 (MOX: Mixed Oxide) Core Transient Benchmark with the modern MCNP6 Monte Carlo code based on the ENDF/B-VII.1 evaluated nuclear data library.

10p meyerowitz 25-12-2021 8 0   Download

The results suggest that the improved NP characteristics on a steel mesh substrate, including multi- and mixed metal oxides, can display photocatalytic antibacterial activity against E. coli along with minimization of NP exposure due to NP immobilization.

8p meyerowitz 25-12-2021 8 0   Download

The supercapacitance performance of the PGNC nanocomposite is reported for different electrolytes, different stoichiometric ratios of Ni and Co in NixCo1- xFe2O4 and on different substrates.

11p meyerowitz 25-12-2021 9 0   Download

Nano-NiO catalyzed acylation of mixed (methyl)(aryl)zincs with aromatic acyl halides in THF at room temperature provides a new facile route for aryl–aroyl coupling. Among NiCl2.L2 and NiCl2.L (L = monodentate and bidentate phosphine ligand) catalysts, the lower catalyst loading of NiCl2 (dppf) may seem attractive; however, nano-NiO, being the lowest cost catalyst, is more favorable for aroylation of (methyl)(aryl)zincs. This procedure also provides a supplement to Cu and Pd catalyzed acylation of diorganozincs.

9p tudichquannguyet 29-11-2021 9 1   Download