USE OF CONTINUOUSLY VARIABLE POWER IN MICROWAVE ASSISTED CHEMISTRY
A method of microwave assisted chemistry is disclosed in which power can be supplied more continuously at preferred power levels to more precisely control or moderate a chemical reaction. The method comprises measuring the duty cycle required to maintain a measured selected parameter of a sample at...
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Main Authors | , |
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Format | Patent |
Language | English French |
Published |
28.10.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Abstract | A method of microwave assisted chemistry is disclosed in which power can be supplied more continuously at preferred power levels to more precisely control or moderate a chemical reaction. The method comprises measuring the duty cycle required to maintain a measured selected parameter of a sample at a predetermined set point while the sample is being exposed to microwave radiation at a first predetermined power level; and moderating the duty cycle and the applied microwave power to increase the on time of the duty cycle while applying power at a second predetermined power level that is sufficient to maintain the sample at the set point using the moderated duty cycle. A corresponding device (10) for microwave assisted chemistry is also disclosed and comprises a cavity (11) for receiving a sample (16), a waveguide (12) connected to the cavity (11), a source of microwave radiation connected to the waveguide (12), and a switching power supply (17) for driving the source of microwave radiation (13). |
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AbstractList | A method of microwave assisted chemistry is disclosed in which power can be supplied more continuously at preferred power levels to more precisely control or moderate a chemical reaction. The method comprises measuring the duty cycle required to maintain a measured selected parameter of a sample at a predetermined set point while the sample is being exposed to microwave radiation at a first predetermined power level; and moderating the duty cycle and the applied microwave power to increase the on time of the duty cycle while applying power at a second predetermined power level that is sufficient to maintain the sample at the set point using the moderated duty cycle. A corresponding device (10) for microwave assisted chemistry is also disclosed and comprises a cavity (11) for receiving a sample (16), a waveguide (12) connected to the cavity (11), a source of microwave radiation connected to the waveguide (12), and a switching power supply (17) for driving the source of microwave radiation (13). |
Author | BARCLAY, DAVID ALLAN GREENE, GARY ROGER |
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DocumentTitleAlternate | UTILISATION D'UNE ENERGIE A VARIATION CONTINUE POUR DES TRAITEMENTS CHIMIQUES ASSISTES PAR HYPERFREQUENCES |
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Snippet | A method of microwave assisted chemistry is disclosed in which power can be supplied more continuously at preferred power levels to more precisely control or... |
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SubjectTerms | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TESTING THEIR RELEVANT APPARATUS TRANSPORTING |
Title | USE OF CONTINUOUSLY VARIABLE POWER IN MICROWAVE ASSISTED CHEMISTRY |
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