光化学微尺度连续振荡障板反应器的建模和实验研究

IF 3.5 3区 工程技术 Q2 ENGINEERING, CHEMICAL AIChE Journal Pub Date : 2024-08-07 DOI:10.1002/aic.18553
Peiwen Liu, Weiping Zhu, Fang Zhao
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引用次数: 0

摘要

本文设计并评估了首个光化学微尺度连续振荡障板反应器,即 Photo-μCOBR。计算流体动力学模拟用于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,μCOBR 的混合速度比直通道快 23 倍以上。最后,利用飞秒激光内雕技术制作了玻璃光μCOBR,并对双氢青蒿酸进行了光催化气液氧化。在气液流量比为 1:3 的条件下,停留时间约为 120 秒,产率达到 65.9%(相比之下,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,而且制造出来的光μCOBR 在气液光化学反应中显示出良好的潜力。
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Modeling and experimental study on a photochemical microscale continuous oscillatory baffled reactor

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.

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来源期刊
AIChE Journal
AIChE Journal 工程技术-工程:化工
CiteScore
7.10
自引率
10.80%
发文量
411
审稿时长
3.6 months
期刊介绍: The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.
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