Herein, the first photochemical microscale continuous oscillatory baffled reactor, that is, Photo-μCOBR, was designed and evaluated. Computational fluid dynamics simulations were used to optimize the key structural parameter and operating conditions. Then, the mixing process was simulated and the μCOBR was shown to be more than 23 times faster than the straight channel both under oscillating conditions. Finally, a glass Photo-μCOBR was fabricated by femtosecond laser internal engraving technology, and the photocatalytic gas–liquid oxidation of dihydroartemisinic acid was performed. A yield of 65.9% was achieved in a residence time of ~120 s and at a gas–liquid flow rate ratio of 1:3 (vs. 18.6% in the capillary photomicroreactor under identical conditions). The results in this work offer guidelines for the design and operation of microscale COBRs, and the as-fabricated Photo-μCOBR displays good potential for gas–liquid photochemical reactions.

中文翻译：

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光化学微型连续振荡折流板反应器的建模与实验研究


在此，设计并评估了第一个光化学微型连续振荡折流板反应器，即Photo -μ COBR。使用计算流体动力学模拟来优化关键结构参数和操作条件。然后，对混合过程进行了模拟，结果表明，在振荡条件下， μ COBR 的速度比直通道快 23 倍以上。最后，采用飞秒激光内雕技术制备了玻璃Photo -μ COBR，并进行了二氢青蒿酸的光催化气液氧化。在约 120 s 的停留时间和 1:3 的气液流速比下，产率达到 65.9%（而相同条件下毛细管光微反应器的产率为 18.6%）。这项工作的结果为微型 COBR 的设计和操作提供了指导，并且所制造的 Photo -μ COBR 在气液光化学反应中表现出良好的潜力。