Microwave-assisted chemical synthesis instrument with fixed tuning
AssigneeCEM Corporation
InventorWilliam Edward Jennings
Life of this patent
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Abstract
An instrument is disclosed for microwave-assisted chemical processes that avoids tuning discrepancies that otherwise result based upon the materials being heated. The instrument includes a source of microwave radiation, a waveguide in communication with the source, with at least a portion of the waveguide forming a cylindrical arc, a cylindrical cavity immediately surrounded by the cylindrical arc portions of the waveguide, and at least three slotted openings in the circumference of the circular waveguide that provide microwave communication between the waveguide and the cavity.
Claims15
A method of carrying out microwave-assisted chemical reactions the method comprising:
- adding reagents to a microwave-transparent vessel;
- securing the vessel against pressure release with a seal;
- thereafter inserting a needle through the seal and into the pressure-secured vessel to provide fluid communication to the interior of the sealed vessel through the needle;
- and
- irradiating the vessel and its contents with microwaves.
A method of carrying out microwave-assisted chemical reactions the method comprising:
- adding reagents to a plurality of microwave-transparent vessels;
- securing each of the vessels against pressure release with a seal;
- thereafter inserting a needle through the seal of a first of the vessels and into the pressure-secured vessel to provide fluid communication to the interior of the sealed vessel through the needle without permanently breaching the seal;
- irradiating the vessel and its contents with microwaves while monitoring the pressure inside and temperature of the vessel;
- moderating the application of microwaves to the vessel in response to the monitored temperature and pressure;
- removing the needle from the first vessel following the irradiation and moderating steps and without permanently breaching the seal of the vessel;
- and
- repeating the inserting, irradiating, monitoring, moderating and removing steps for the second and successive vessels of the plurality of vessels.
Dependencies are inferred from the claim text.