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Power loss density of electromagnetic waves in unimolecular reactions

机译:单分子反应中电磁波的功率损耗密度

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Microwave-assisted chemical reactions have been widely used, but the mechanism is still unclear, which limits further applications. For example, when chemical reactions are exposed to electromagnetic waves, some electromagnetic energies dissipate and these processes are poorly understood. In this paper, we investigate the power loss density in unimolecular reactions under exposure of electromagnetic waves. By using the equivalent circuit approach, the energy problem can be transformed into the energy stored or dissipated in equivalent circuit elements. The power loss density of electromagnetic waves in unimolecular reactions can be clearly obtained from an equivalent time-varying resistance, which is related to the amount of substances in reactions. Specifically, when the applied electromagnetic wave is monochromatic and the reaction rate is slow, the derived expression of the power loss density can be reduced to the classical formula in the frequency domain.
机译:微波辅助化学反应已被广泛使用,但机理尚不清楚,这限制了其进一步的应用。例如,当化学反应暴露于电磁波时,一些电磁能会耗散,并且对这些过程的了解很少。在本文中,我们研究了电磁波暴露下单分子反应中的功率损耗密度。通过使用等效电路方法,能量问题可以转化为在等效电路元件中存储或消散的能量。从等价随时间变化的电阻可以清楚地获得单分子反应中电磁波的功率损耗密度,这与反应中的物质数量有关。具体地,当所施加的电磁波是单色的并且反应速度慢时,可以将功率损耗密度的导出表达式简化为频域中的经典公式。

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