NEW DEVELOPMENTS IN THE FIELD OF ENERGY-TRANSFER BY MEANS OF MONOMODE MICROWAVES FOR VARIOUS OXIDES AND HYDROXIDES

被引：14

作者：

GASGNIER, M

LOUPY, A

PETIT, A

JULLIEN, H

机构：

[1] UNIV PARIS 11,ICMO,REACT SELECT SUPPORT LAB,CNRS,UA 478,F-91405 ORSAY,FRANCE

[2] CNRS,ER 9,F-94230 THIAIS,FRANCE

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 204卷 / 1-2期

关键词：

Chromium compounds - Heat transfer - Lead compounds - Magnetrons - Microwave ovens - Microwaves - Phase transitions - Powders - Synthesis (chemical) - Temperature measurement - Tin compounds - Vanadium compounds;

D O I：

10.1016/0925-8388(94)90086-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By means of a ''focused'' microwave oven (monomode system) it is possible to carry out chemical syntheses within very short times. The use of a new magnetron with higher performance experimental conditions has allowed us to observe phenomena which have not previously been recorded. For instance, it is possible within very short treatment times to form copper metal from Cu2O, TiO2 rutile from TiO2 anatase, PbO from Pb3O4 and the V6O13 and V2O5 higher oxides from V2O3. Finally, it is possible to turn white powders such as SnO2, TiO2 and eta-Al2O3 and green powders such as Cr2O3 incandescent red. Several hypotheses will be put forward to try to explain this phenomenon. The temperature measurement is also discussed as a function of the dielectric constant of the materials.

引用

页码：165 / 172

页数：8

共 21 条

[1] APPLICATION OF MICROWAVE-HEATING TECHNIQUES FOR THE SYNTHESIS OF SOLID-STATE INORGANIC-COMPOUNDS [J].