Microcomputer microwave chemical reactor

Microcomputer microwave chemical reactorThe working principle of

Microwave is a high-frequency electromagnetic wave that does not generate heat on its own. Microwaves in nature cannot be used as a source of energy due to their dispersion and lack of concentration, while the magnetron used can convert electrical energy into microwaves at a rate of per second2450MHzThe oscillation frequency penetrates the medium, and when the medium has a suitable dielectric constant and dielectric loss, high-frequency oscillations occur in the alternating electromagnetic field, causing energy to accumulate inside the medium. For chemical reactions, both thermal and non thermal effects can occur simultaneously.

Non polar materials such as tetrafluoroethylene; But it will be reflected on the metal surface. The power output of the magnetron in household microwave ovens is basically fixed, and smaller power is achieved by changing the on/off time (duty cycle) of the current. The microcomputer can strictly implement the on/off of current, and selecting the same working conditions can obtain repeated chemical reaction conditions

Microcomputer microwave chemical reactorThe working method

Sealing experiment: Considering the safety of microwave ovens and operators, it is necessary to pay attention to the following points:

1It is known that the reaction will produce gas and cannot be used for sealing experiments;

2The sealing tube must be pressure resistant95Made of glass material; The amount of reaction materials must be strictly controlled.

3If the amount of reactants is small and does not require stirring, it can be used50mlOr a 100ml flask. Place the polytetrafluoroethylene tray in the center of the furnace bottom, then insert the direct tube from the furnace through the cutoff waveguide into the flask, and arrange a suitable reflux device above the furnace top.

4There is a magnetic stirrer at the bottom, and the clockwise rotation speed changes from low to high. If the reaction volume is large or a stirrer needs to be inserted (note: the stirrer must be made of glass or tetrafluoroethylene and cannot be made of metal products), then use50ml-250mlFlask. Directly pass the tube from the furnace top through the cutoff waveguide to check the body and burn the bottle mouth, with a U-shaped mouth orA PSI shaped three port connecting pipe, followed by a stirrer, reflux device, and drip funnel.

Specification of chemical reactor

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