Results 241 to 250 of about 2,836,503 (289)

An installation for microwave synthesis

Proceedings International University Conference 'Electronics and Radiophysics of Ultra-High Frequencies' (Cat. No.99EX356), 2003
Under microwave radiation a wide variety of chemical reactions can be accelerated by ten or even one hundred times. This reduces energy and labor resources. To achieve best results in microwave synthesis it is necessary to provide a homogeneous electromagnetic field distribution inside the heating vessel and small standing wave ratio (SWR) in the ...
A.D. Grigoriev, I.P. Dubchuk, A.S. Shtolvin   +2 more
openaire   +1 more source

Microwave synthesis of LaCrO3

Journal of Materials Chemistry, 1998
The synthesis of LaCrO 3 from a stoichiometric mixture of Cr 2 O 3 and La 2 O 3 powder by microwave irradiation was examined using a multi-mode 28 GHz microwave heating system. In the La 2 O 3 -Cr 2 O 3 system, Cr 2 O 3 strongly absorbs microwaves while La 2 O 3 is transparent to microwaves. The
Masato Iwasaki, Hirotsugu Takizawa, Kyota Uheda, Tadashi Endo, Masahiko Shimada   +4 more
openaire   +1 more source

Synthesis of microwave structures

APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577), 2002
Now, with the wide spread of CAD, a designer has an opportunity to skip some intermediate steps in the circuit representation and directly proceed drawing the microwave topology on the computer screen; simulate and view the characteristics of the unit.
A. Kurushin, S. Podkovyrin
openaire   +1 more source

Focused Microwave Synthesis

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ulf Sengutta, Hans‐Peter Meier
openaire   +1 more source

Optical Synthesis Of Microwave Signals

27th European Microwave Conference and Exhibition, 1997
Microwave signals can be generated by the photo-detection of multiple optical signals. This approach has potential for the generation of signals having characteristics not readily obtainable by other means, such as fast tuning over multi-octave ranges, low dispersion and non-linearity penalties in millimetre-wave over fibre transmission and compact ...
openaire   +1 more source

Microwave Synthesis of ZnSe

Journal of Materials Engineering and Performance, 2012
Research on ZnSe synthesis using microwave (MW) activation was conducted at varying concentrations of alkaline metal halogenides. It was established that ZnSe with a cubic lattice (a = 5.665 ± 0.002 A) was formed irrespective of synthesis conditions. The interaction between zinc and selenium under MW radiation occurs at considerably lower temperatures (
D. S. Sofronov, E. M. Sofronova, V. V. Starikov, V. N. Baumer, P. V. Matejchenko, S. N. Galkin, A. I. Lalajants, A. G. Mamalis, S. N. Lavrynenko   +8 more
openaire   +1 more source

Microwaves in Organic Synthesis. Thermal and Non‐Thermal Microwave Effects

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Antonio, de la Hoz, Angel, Díaz-Ortiz, Andrés, Moreno   +2 more
openaire   +2 more sources

Microscopical and physical characterization of microwave and microwave-hydrothermal synthesis products

Micron, 2013
Application of microwave energy for materials processing is emerging as an innovative technology with many advantages over the conventional processing, and the rapid progress in this field suggests that microwave material processing (e.g., microwave and microwave-hydrothermal process) will play an outstanding role in the broad field of nanoscience and ...
X H, Zhu, Q M, Hang
openaire   +2 more sources

Microwave-Mediated Synthesis of an Arylboronate Library

ACS Combinatorial Science, 2010
A series of arylboronates has been synthesized from the reaction of 2-(2-, (3-, or (4-(bromomethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 1{1-3} respectively with a range of N-, S-, and O-nucleophiles, using microwave-mediated chemistry. For the synthesis of N- and S-substituted boronates, a supported base, PS-NMM, was employed, and many ...
Spencer, John, Baltus, Christine B., Patel, Hiren, Press, Neil J., Callear, Samantha K., Male, Louise, Coles, Simon J.   +6 more
openaire   +3 more sources

Microwave-assisted synthesis of α-ethoxycarbamates

Tetrahedron, 2009
An efficient and reproducible synthesis of various α-ethoxycarbamates is described via a microwave heating mode. Compared to the thermal process, the microwave dielectric heating induces a dramatic reduction of the reaction time and the improvement of the yields.
Lumbroso, Alexandre, Chevallier, Floris, Beaudet, Isabelle, Quintard, Jean-Paul, Besson, Thierry, Le Grognec, Erwan   +5 more
openaire   +3 more sources