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Journal articles on the topic 'Flow synthesis, Precipitation, Microwave, Reactors'

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1

Aimable, Anne, Tomasz Strachowski, Ewelina Wolska, Witold Lojkowski, and Paul Bowen. "Comparison of two innovative precipitation systems for ZnO and Al-doped ZnO nanoparticle synthesis." Processing and Application of Ceramics 4, no. 3 (2010): 107–14. http://dx.doi.org/10.2298/pac1003107a.

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This study presents a comparative approach to investigate the potentials of two innovative methods for the synthesis of ZnO and Al-doped ZnO. The first method is a precipitation system working in mild hydrothermal conditions (90?C) using a tubular reactor (Segmented Flow Tubular Reactor, SFTR). The second method is a microwave-assisted hydrothermal process working at 250?C - 38 atmospheres. Nanocrystalline ZnO with a high specific surface area (49-68 m2/g) was obtained with both systems. Smaller equiaxed particles (50-70 nm) were obtained with the SFTR, with an excellent homogeneity in size an
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2

Dvoeglazov, Konstantin, Yury Kulyako, Sergey Vinokurov, et al. "Synthesis of Mixed Actinide Oxides Using Microwave Radiation." Energies 15, no. 18 (2022): 6618. http://dx.doi.org/10.3390/en15186618.

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A method has been developed for producing mixed actinide oxides suitable for fabricating mixed nitride uranium plutonium fuel for fast neutron reactors. The method is based on the use of microwave radiation for the direct denitration of actinide nitrate solutions. The possibility of producing uranium, plutonium, and neptunium-mixed oxides was shown. A pilot installation for preparing actinide oxides by microwave denitration was designed and tested. Mixed oxides of uranium and cerium (for plutonium imitation) were successfully used to synthesize uranium cerium nitrides and produce fuel pellets.
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3

Sharma, Gaurav, and Guennadi A. Kouzaev. "Miniature glass-metal coaxial waveguide reactors for microwave-assisted liquid heating." AIMS Electronics and Electrical Engineering 7, no. 1 (2023): 100–120. http://dx.doi.org/10.3934/electreng.2023006.

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<abstract> <p>Microwave (MW) irradiation is recognized as an effective tool in industries related to pharmaceuticals, chemistry, nanoparticle synthesis, food, etc. In the hardware field, some research efforts are concentrated on creating miniature reactors using low-cost technologies aimed at on-demand chemistry or parallel synthesis of many drugs.</p> <p>This paper reports on the development and characterization of novel miniature chemical-resistant glass-metal coaxial reactors based on a modified Liebig condenser. It is composed of two concentric glass tubes, one for
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4

Erdmenger, Tina, Renzo M. Paulus, Richard Hoogenboom, and Ulrich S. Schubert. "Scaling-up the Synthesis of 1-Butyl-3-methylimidazolium Chloride under Microwave Irradiation." Australian Journal of Chemistry 61, no. 3 (2008): 197. http://dx.doi.org/10.1071/ch07345.

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Ionic liquids are considered to be ‘green’ solvents on account of their non-volatility and non-flammability – which are results of their negligible vapour pressures – as well as reusability. On the basis of ecological concerns, ionic liquids seem to be an attractive alternative to conventional volatile organic solvents. In the present work, the reaction conditions for the synthesis of 1-butyl-3-methylimidazolium chloride were optimized on a small scale (~2 mL, 10 mmol) using a single-mode microwave system. The conditions obtained were subsequently transferred to various microwave reactors, bot
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5

Wojnarowicz, Jacek, Sylwia Kusnieruk, Tadeusz Chudoba, et al. "Paramagnetism of cobalt-doped ZnO nanoparticles obtained by microwave solvothermal synthesis." Beilstein Journal of Nanotechnology 6 (September 30, 2015): 1957–69. http://dx.doi.org/10.3762/bjnano.6.200.

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Zinc oxide nanopowders doped with 1–15 mol % cobalt were produced by the microwave solvothermal synthesis (MSS) technique. The obtained nanoparticles were annealed at 800 °C in nitrogen (99.999%) and in synthetic air. The material nanostructure was investigated by means of the following techniques: X-ray diffraction (XRD), helium pycnometry density, specific surface area (SSA), inductively coupled plasma optical emission spectrometry (ICP-OES), extended X-ray absorption fine structure (EXAFS) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and with
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6

Laybourn, Andrea, Ana María López-Fernández, Ieuan Thomas-Hillman, et al. "Combining continuous flow oscillatory baffled reactors and microwave heating: Process intensification and accelerated synthesis of metal-organic frameworks." Chemical Engineering Journal 356 (January 2019): 170–77. http://dx.doi.org/10.1016/j.cej.2018.09.011.

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7

Wu, Shuai, Qiang Wang, Kesheng Guo, et al. "Synthesis and Mechanism Study of Carbon Nanowires, Carbon Nanotubes, and Carbon Pompons on Single-Crystal Diamonds." Crystals 14, no. 6 (2024): 481. http://dx.doi.org/10.3390/cryst14060481.

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Carbon nanomaterials are in high demand owing to their exceptional physical and chemical properties. This study employed a mixture of CH4, H2, and N2 to create carbon nanostructures on a single-crystal diamond using microwave plasma chemical vapor deposition (MPCVD) under high-power conditions. By controlling the substrate surface and nitrogen flow rate, carbon nanowires, carbon nanotubes, and carbon pompons could be selectively deposited. The results obtained from OES, SEM, TEM, and Raman spectroscopy revealed that the nitrogen flow rate and substrate surface conditions were crucial for the g
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8

Kamaruddin, Mohd Johari, Muhammad Abbas Ahmad Zaini, Anwar Johari та Tuan Amran Tuan Abdullah. "Dielectric Properties for the Ring Opening Polymerisation of ε-Caprolactone". Applied Mechanics and Materials 493 (січень 2014): 621–27. http://dx.doi.org/10.4028/www.scientific.net/amm.493.621.

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A dielectric property study was performed across a wide range of frequencies and temperatures onring opening polymerisation of ε-caprolactone system in order to relate quantitatively their dielectric properties to microwave heating mechanisms. An analysis of the results concluded that heating mechanism of the polymerisation mixtures in a microwave field was controlled by the dielectric properties of monomer, where the monomer was the major component (>90 % volume/volume) as well as the component with highest dielectric loss and dissipation factor. The penetration depth of mixtures at 2.45 G
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9

Akay, Galip. "Hydrogen, Ammonia and Symbiotic/Smart Fertilizer Production Using Renewable Feedstock and CO2 Utilization through Catalytic Processes and Nonthermal Plasma with Novel Catalysts and In Situ Reactive Separation: A Roadmap for Sustainable and Innovation-Based Technology." Catalysts 13, no. 9 (2023): 1287. http://dx.doi.org/10.3390/catal13091287.

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This multi-disciplinary paper aims to provide a roadmap for the development of an integrated, process-intensified technology for the production of H2, NH3 and NH3-based symbiotic/smart fertilizers (referred to as target products) from renewable feedstock with CO2 sequestration and utilization while addressing environmental issues relating to the emerging Food, Energy and Water shortages as a result of global warming. The paper also discloses several novel processes, reactors and catalysts. In addition to the process intensification character of the processes used and reactors designed in this
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10

Horikoshi, Satoshi, Hideki Abe, Kanjiro Torigoe, Masahiko Abe, and Nick Serpone. "Access to small size distributions of nanoparticles by microwave-assisted synthesis. Formation of Ag nanoparticles in aqueous carboxymethylcellulose solutions in batch and continuous-flow reactors." Nanoscale 2, no. 8 (2010): 1441. http://dx.doi.org/10.1039/c0nr00141d.

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11

Mallick, Sourav, Arjun Patel, Mingyao Mou, et al. "Synthesis of Lithium-Nickel-Cobalt-Manganese-Aluminum Oxide-Based Ni-Rich Lib Cathode through Slug-Flow Manufacturing Platform." ECS Meeting Abstracts MA2023-01, no. 2 (2023): 580. http://dx.doi.org/10.1149/ma2023-012580mtgabs.

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Lithium ion batteries (LIBs) with high specific capacity and long cycle life is critically required for high energy applications, such as electric vehicle technology. Owing to the high capacity, various Ni-rich cathodes (with Ni-content ≥ 80 %), including lithium-nickel-cobalt-manganese (NCM), lithium-nickel-cobalt-aluminum (NCA)-based layer oxides are widely explored to fabricate high performance LIBs.1 However, increase in Ni-content in the layered oxides aggravated the issues like, poor rate capability and short cycling performance due to the extensive volume contraction/expansion and the p
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12

Ali, Muhammad, Hartmut Wiggers, and Michael Pope. "Formation of Silicon/Graphene Heterostructures through Co-Gas-Phase Synthesis." ECS Meeting Abstracts MA2025-01, no. 15 (2025): 1113. https://doi.org/10.1149/ma2025-01151113mtgabs.

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The deliberate assembly of heterostructures made up of different flakes in configurations such as 2D/2D or particle-flake (0D/2D) emerged as an important advancement for the energy storage application because it provides properties such as mechanical stability, large surface area and at the same time low material requirements. The wet-phase processing techniques for heterostructures, including polymer-facilitated charge-induced self-assembly and hydrothermal synthesis, have been effectively established. But there are some limitations associated with these processing techniques. Due to the addi
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13

Török, Béla, Tara Mooney, and Maysa Ilamanova. "Microwave-Assisted Flow Chemistry for Green Synthesis and Other Applications." Current Microwave Chemistry 10 (December 8, 2022). http://dx.doi.org/10.2174/2213335610666221208163107.

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Abstract: Using combined microwave-assisted flow chemistry approaches is one of the most active areas of microwave chemistry and green synthesis. Microwave-assisted organic synthesis (MAOS) has contributed significantly to developing green synthetic methods, while flow chemistry applications are quite popular in industrial chemistry. The combination of the two has far-reaching advantages. In early studies, the flow chemistry concept was applied in domestic microwave ovens already indicating strong potential for future applications. The relatively small diameter of the flow reactors can address
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14

Kunz, Ulrich, and Thomas Turek. "Flow through reactors for organic chemistry: directly electrically heated tubular mini reactors as an enabling technology for organic synthesis." Beilstein Journal of Organic Chemistry 5 (November 30, 2009). http://dx.doi.org/10.3762/bjoc.5.70.

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Until recently traditional heating in organic chemistry has been done with oil heating baths or using electric heat exchangers. With the advent of microwave equipment, heating by microwaves was rapidly introduced as standard method in organic chemistry laboratories, mainly because of the convenient possibility to operate at high temperature accompanied by accelerated reaction rates. In the present contribution we discuss the method of heating small, continuously operated reactors by passing electric current directly through the reactor wall as an enabling technology in organic chemistry. The b
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15

Li, Yao, Junzhou Li, Chaoying Cai, et al. "Diversified applications and synthesis of hydroxamic acids." Australian Journal of Chemistry 77, no. 12 (2024). https://doi.org/10.1071/ch24116.

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Owing to the ability to form coordination complexes with several metal ions, hydroxamic acids have been widely used in the fields of medicinal chemistry, mineral flotation, metal–organic frameworks (MOFs), remediation of metal contamination and more. Since three hydroxamic acid-based histone deacetylase (HDAC) inhibitors were approved by the US Food and Drug Administration (FDA) for the treatment of haematologic malignancies, such functional groups have acquired even more attention in synthetic medicinal chemistry. However, application of hydroxamic acids for ore beneficiation is a unique area
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16

Shen, Qinghao, Pikalev Aleksandr, Floran Peeters, Vasco Guerra, and Richard Van de Sanden. "Pinpointing energy transfer mechanisms in the quenching process of microwave air plasma." Journal of Physics D: Applied Physics, June 12, 2025. https://doi.org/10.1088/1361-6463/ade3e6.

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Abstract A time-dependent multi-temperature quenching model at atmospheric pressure, incorporating chemical and vibrational kinetics, is introduced. The model provides insights into the pathways of NOx formation and destruction in the downstream region of a microwave air plasma. Relaxation of the temperatures during the forced cooling trajectory by the wall is modelled. A Continuous Stirred Tank Reactor model and a Plug Flow Reactor model represent the plasma and quenching regions, respectively. For the non-thermal conditions, where gas and vibrational temperatures differ, most reaction rate c
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