Hollow fiber membrane governed microjet flow regime for confined crystallization of large-sized crystal aggregates

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL AIChE Journal Pub Date : 2024-05-15 DOI:10.1002/aic.18474

Yuchao Niu, Shaofu Du, Shankun Liang, Lei Sheng, Yingshuang Meng, Wu Xiao, Xuehua Ruan, Gaohong He, Xiaobin Jiang

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Abstract

Confined crystallization can realize controllable nucleation and growth of crystals with targeted morphologies in a restricted region. Here, we achieved confined reactive crystallization within a novel micro columnar jet flow regime constructed by the hollow fiber membrane. The interface of the jet flow corresponds as the restricted region for reactive crystallization, and the large-sized calcium carbonate (CaCO₃) crystals aggregates with millimeter length can ordered and self-assembly grow along the boundary of this region. Formation mechanism of the jet flow was systematically investigated by real-time observation and force analysis. The detected detachment-regrowth cycle during the experiments furtherly uncovered the potential for continuous operation. Linear (diameter: 0.12–0.3 mm; length: 1.5–3.1 mm) and lamellar crystals (thickness of 200–300 nm and average area of 0.21 mm²) were obtained by effectively manipulating the diameter and effective length of jet flow.

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用于大尺寸晶体聚集体限制结晶的中空纤维膜调控微射流机制

受限结晶可在受限区域内实现具有目标形态的晶体的可控成核和生长。在这里，我们在由中空纤维膜构建的新型微柱状射流体系中实现了限制反应结晶。喷射流的界面相当于反应结晶的受限区域，长度为毫米的大尺寸碳酸钙（CaCO3）晶体聚集体可沿着该区域的边界有序自组装生长。通过实时观测和受力分析，系统地研究了喷射流的形成机理。实验过程中检测到的脱落-生长循环进一步揭示了连续运行的潜力。通过有效控制喷射流的直径和有效长度，获得了线状（直径：0.12-0.3 毫米；长度：1.5-3.1 毫米）和片状晶体（厚度为 200-300 纳米，平均面积为 0.21 平方毫米）。

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来源期刊

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.