نتایج جستجو برای: microwave spectroscopy

تعداد نتایج: 220219  

Glycerol mono-oleate (GMO) was produced by direct esterification reaction with amberlyst 16 resin catalysts with the efficiency of 86% and was used as a surfactant for synthesis of CoFe2O4 nano-particles by surfactant-assisted microwave method. Fourier transform infrared spectroscopy (FT-IR), X-Ray diffraction (XRD) and scanning electron microscopy (SEM) were used to consider the structural and...

Glycerol mono-oleate (GMO) was produced by direct esterification reaction with amberlyst 16 resin catalysts with the efficiency of 86% and was used as a surfactant for synthesis of CoFe2O4 nano-particles by surfactant-assisted microwave method. Fourier transform infrared spectroscopy (FT-IR), X-Ray diffraction (XRD) and scanning electron microscopy (SEM) were used to consider the structural and...

D. Ghanbari M. Ranjbar M. Salavati-Niasari,

ZnS  nanoparticles  were  synthesized  via  a  simple  surfactant  free microwave  route.  In  this  synthesis, thioacetamide  was  used  as sulfur  source.  The effects  of different  parameters  such  as  type of zinc precursor,  time  and  power  of  irradiation  on  the  morphology and  particle  size  of  the  products  have been  investigated.  The nanostructures  were  characterized  by ...

Journal: :Chemical communications 2006
Thomas M Barnard Nicholas E Leadbeater

An apparatus has been developed for real-time monitoring of organometallic reactions under microwave irradiation using in situ Raman spectroscopy and its application for monitoring ligand substitution reactions of Mo(CO)6 demonstrated.

Journal: :Physical chemistry chemical physics : PCCP 2009
Santiago Mata Vanesa Vaquero Carlos Cabezas Isabel Peña Cristóbal Pérez Juan C López José L Alonso

Using laser-ablation molecular-beam Fourier transform microwave (LA-MB-FTMW) spectroscopy two new conformers of proline have been identified together with the two previously observed (Angew. Chem. Int. Ed., 2002, 41, 4673).

Journal: :Chemical communications 2010
M Victoria Gomez Hein H J Verputten Angel Díaz-Ortíz Andres Moreno Antonio de la Hoz Aldrik H Velders

We report the use of a nanolitre nuclear magnetic resonance (NMR) spectroscopy microfluidic chip hyphenated to a continuous-flow microlitre-microwave irradiation set-up, for on-line monitoring and rapid optimization of reaction conditions.

Journal: :journal of particle science & technology 2015
mehrdad manteghain faeze tari behrooz bozorgi

this paper focused on a simple approach for synthesis of molybdenum oxide (moo3) nanoparticles and reports a facile route for synthesis of such nanoparticles, using microwave irradiation as a homogenous and powerful source of heating, using ethylene glycol as the solvent and heating medium. for more investigations, besides microwave heating, the obtained solutions were also treated by conventio...

M. Khorasani-Motlagh M. Yousefi S. Z. Mohammadi Sh. Jahani

α-Fe2O3 (hematite) is the most stable iron oxide under ambient conditions. This transition metal oxide has been extensively investigated because it has unique electrical and catalytic properties. In this report, a novel microwave method for preparation of α-Fe2O3 nanoparticles has been developed. The process contained two steps: first, precursor were obtained from a mixed solution of 50 ml of 0...

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