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49 Newest Publications about the topic microwave reactors

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High-Speed but Not Magic: Microwave-Assisted Synthesis of Ultra-Small Silver Nanoparticles

18-Dec-2017 | Patrick E. J. Saloga; Claudia Kästner; Andreas F. Thünemann, Langmuir, 2017

Reaction procedures have been improved to achieve higher yields and shorter reaction times: one possibility is the usage of microwave reactors. In the literature, this is under discussion, for example, nonthermal effects resulting from the microwave radiation are claimed. Especially for the ...

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Performance of Zinc Oxide Nanoparticles as Polymerization Initiating Systems in the Microwave‐Assisted Synthesis of Poly(d,l‐Lactide)/ZnO Nanocomposites

17-Aug-2017 | Heriberto Rodríguez‐Tobías, Graciela Morales, Francisco J. Enríquez‐Medrano, Daniel Grande, Macromolecular Symposia, 2017

Poly(D,L‐lactide) (PLA) is a biodegradable polymer widely used in medical applications, whose properties can be diversified by the incorporation of multifunctional nanoparticles. In this report, the microwave‐assisted ring‐opening polymerization of D,L‐lactide in the presence of ZnO ...

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Performance of Zinc Oxide Nanoparticles as Polymerization Initiating Systems in the Microwave‐Assisted Synthesis of Poly(d,l‐Lactide)/ZnO Nanocomposites

17-Aug-2017 | Heriberto Rodríguez‐Tobías, Graciela Morales, Francisco J. Enríquez‐Medrano, Daniel Grande, Macromolecular Symposia, 2017

Poly(D,L‐lactide) (PLA) is a biodegradable polymer widely used in medical applications, whose properties can be diversified by the incorporation of multifunctional nanoparticles. In this report, the microwave‐assisted ring‐opening polymerization of D,L‐lactide in the presence of ZnO ...

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Microwave‐Assisted Selective Hydrogenation of Furfural to Furfuryl Alcohol Employing a Green and Noble Metal‐Free Copper Catalyst

16-Dec-2016 | Pedro N. Romano, João M. A. R. de Almeida, Yuri Carvalho, Peter Priecel, Eduardo Falabella Sousa‐Aguiar, Jose A. Lop ..., ChemSusChem, 2016

Abstract Green, inexpensive, and robust copper‐based heterogeneous catalysts achieve 100 % conversion and 99 % selectivity in the conversion of furfural to furfuryl alcohol when using cyclopentyl‐methyl ether as green solvent and microwave reactors at low H2 pressures and mild temperatures. ...

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From Lignocellulosic Biomass to Lactic‐ and Glycolic‐Acid Oligomers: A Gram‐Scale Microwave‐Assisted Protocol

18-Apr-2015 | Diego Carnaroglio, Silvia Tabasso, Beata Kwasek, Dariusz Bogdal, Emanuela Calcio Gaudino, Giancarlo Cravotto, ChemSusChem, 2015

The Inside Cover picture shows the complementary action of different microwave reactors in destroying the polymer chains of lignocellulosic biomass and rebuilding oligomers from the recovered building blocks. We designed a “microwave factory in the lab” for a flash catalytic conversion of ...

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Microwave mediated preparation of nanoparticles from wx corn starch employing nanoprecipitation

30-Aug-2013 | Shazia Juna, Stephan Hayden, Markus Damm, Christian O. Kappe, Anton Huber, Starch - Stärke, 2013

The influence of alkali concentration, temperature, concentration of urea and KSCN on the shapes and sizes of wx corn starch precipitates (isolated via nanoprecipitation) were studied. A strong correlation was found between the molecular and hydrodynamic characteristics, determined by using ...

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Nanoprecipitaton of native pea starches treated in alkaline media at various temperatures employing a dedicated microwave reactor

12-Jul-2013 | Shazia Juna, Stephan Hayden, Markus Damm, C. Oliver Kappe, Anton Huber, Starch - Stärke, 2013

Starch dispersions/solutions were prepared by heating native pea starch in 1 M NaOH(aq) at various temperatures (50–100°C) using a dedicated microwave reactor. The influence of temperature upon the apparent molecular and hydrodynamic characteristics was investigated employing asymmetrical flow ...

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Analysis of Fatty Acids and Phytosterols in Ethanol Extracts of Nelumbo nucifera Seeds and Rhizomes by GC-MS

08-Jul-2013 | Xu Zhao; Jian Shen; Kyung Ja Chang; Sung Hoon Kim, Journal of Agricultural and Food Chemistry, 2013

The purpose of this study was to investigate the fatty acid and phytosterol contents in ethanol extracts of lotus seeds and rhizomes. These ethanol extracts were extracted with hexane. The hexane extracts were hydrolyzed in a microwave reactor, and total fatty acids and phytosterols were ...

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Design and evaluation of improved magnetic stir bars for single-mode microwave reactors

12-Jun-2013 | David Obermayer; Markus Damm; C Oliver Kappe, Organic & Biomolecular Chemistry, 2013

Magnetic stirring in sealed cylindrical vessels designed for use in single-mode microwave instruments is typically less than optimal, and not comparable to the efficient agitation that can generally be obtained in a round-bottomed flask fitted with a suitable magnetic stir bar or using overhead ...

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New Nanostructured Materials: Synthesis of Dodecanuclear NiII Complexes and Surface Deposition Studies

21-May-2013 | Alba Pons‐Balagué, Stergios Piligkos, Simon J. Teat, Jose Sánchez Costa, Muhandis Shiddiq, Stephen Hill, German R. C ..., Chemistry - A European Journal, 2013

Abstract Microwave‐assisted synthesis has been used to obtain the family of dodecanuclear NiII complexes [Ni12(NO3)(MeO)12(MeC6H4CO2)9(MeOH)10(H2O)2][ClO4]2 (1), [Ni12(NO3)(MeO)12(BrC6H4CO2)9(MeOH)10(H2O)2][ClO4]2 (2), [Ni12(CO3)(MeO)12(MeC6H4CO2)9(MeOH)10(H2O)2]2[SO4] (3) and ...

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