Effect of fuel-to-oxidizer ratios on combustion mode and microstructure of Li2TiO3 nanoscale powders

Zhou, Qilai; Mou, Yang; Ma, Xiuquan; Xue, Lihong; Yan, Yunjun

doi:10.1016/j.jeurceramsoc.2013.10.004

Cited by 45 publications

(14 citation statements)

References 25 publications

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“…Typically, the adiabatic combustion temperature and amount of gas-phase product are calculated and compared to experimentally measured temperatures. One example is reported by Zhou et al (Figure ), which reveals these characteristics for the lithium nitrate–titanyl nitrate–citric acid system, and can be described by the following overall reaction: Figure A shows that the measured combustion temperatures are well below the thermodynamically calculated values. The authors assumed that the large difference in temperatures can be explained by two factors: (i) the experimental conditions were not adiabatic, and (i) for fuel-rich conditions, the fuel does not completely react with oxygen from the atmosphere due to infiltration limitations.…”

Section: Fundamentals Of Solution Combustion Synthesismentioning

confidence: 77%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.

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Section: Fundamentals Of Solution Combustion Synthesismentioning

confidence: 77%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

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“…The observed peaks at 1408 and 1435 cm −1 relate to the C─C stretching mode 34 . The N─O group showed a sharp peak at 1306 cm –1 , 35 and the C─O appeared at two peaks of 1115 and 1043 cm –1 34 . The observed peak at 804 and 566 cm −1 represents the C─H group 34 and Ni─O─H bond, 33 respectively.…”

Section: Resultsmentioning

confidence: 98%

“…33 The observed peaks at 1408 and 1435 cm −1 relate to the C─C stretching mode. 34 The N─O group showed a sharp peak at 1306 cm -1 , 35 and the C─O appeared at two peaks of 1115 and 1043 cm -1 . 34 The observed peak at 804 and 566 cm −1 represents the C─H group 34 and F I G U R E 1 (A) XRD pattern, (B) FT-IR spectrum for SNO, and (C) the curves of (Δ) blank and (○) SNO titration to determine PZC value Ni─O─H bond, 33 respectively.…”

Section: Structural Characteristicsmentioning

confidence: 99%

Nanoraspberry‐like palladium/spongy nickel oxide for electrooxidation of five light fuels

Gomroki

Yavari

Abbasian

et al. 2021

Int J Applied Ceramic Tech

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The spongy nickel oxide (SNO) was synthesized the solution combustion method. The SNO was selected as a promoter to boost the catalytic activity of nanoraspberry‐like palladium (NRPd) toward electrooxidation of five light fuels (LFs): methanol, ethanol, formaldehyde, formic acid, and ethylene glycol. The X‐ray powder diffraction, Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy, and field emission scanning electron microscope techniques were used for the materials characterization. In comparison with nonpromoted Pd, the NRPd‐SNO electrocatalyst shown an excellent efficiency in parameters like the electrochemical active surface area and anti‐CO poisoning behavior. The turnover data and the parameters, including reaction order, activation energy, and the coefficients of electron transfer and diffusion, were evaluated for the each process of LFs electrooxidation. The outcome for NRPd‐SNO activity toward LFs electrooxidation was compared to some reported electrodes. The SNO increases the removal of intermediates created in the oxidation of LFs that can poison the surface of palladium catalyst. This is due to the presence of the lattice oxygens in SNO structure and Ni switching between its high and low valances. The compatibility of the adsorption process of LFs on the surface of the NRPd‐SNO catalyst with different isotherms was determined by studying the Tafel polarization and calculating the surface coverage.

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“…27 The band at 1393 cm À1 corresponds to NO 3À ions. 28 The observed weak band at 1090 cm À1 is due to C]O stretching with ring stretching. 29 The bands at 562 and 435 cm À1 indicate the cubic spinel structure formation of NiFe 2 O 4 .…”

Section: Instrumentation and Electrochemical Testsmentioning

confidence: 95%