Neerup Randi, Løge Isaac A, Fosbøl Philip L
Center for Energy Resources Engineering (CERE), Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads 229, 2800 Kongens Lyngby, Denmark.
ACS Omega. 2023 Jan 10;8(3):3404-3414. doi: 10.1021/acsomega.2c07303. eCollection 2023 Jan 24.
FeCO is present as scales in process equipment, corrosion products, geological systems, and carbon storage. It is therefore crucial to investigate the properties of FeCO to understand scaling in all these systems. However, FeCO is not commercially available, and when used in the lab it is either obtained through extraction of geological formations or synthesized in-house. Geologically formed FeCO contains multiple impurities, which will affect its overall properties, and the synthesized product is highly sensitive to either oxidation or the synthesis pathways. This work explores the parameter space of a synthesis route routinely and pathways for FeCO. We characterized the structure of FeCO using X-ray powder diffraction and its thermal properties with thermogravimetric analysis and scanning electron microscopy. We show how synthesis parameters influence either the macroscopic or microscopic properties of the synthesized product. Our study serves as a guideline for future research regarding what parameters to choose when synthesizing FeCO and what product can be obtained. We herein present a novel fundamental understanding of FeCO.
碳酸亚铁以鳞片形式存在于工艺设备、腐蚀产物、地质系统和碳储存中。因此，研究碳酸亚铁的性质对于理解所有这些系统中的结垢现象至关重要。然而，碳酸亚铁并无商业供应，在实验室使用时，要么通过从地质地层中提取获得，要么在内部合成。地质形成的碳酸亚铁含有多种杂质，这会影响其整体性质，而合成产物对氧化或合成途径高度敏感。这项工作探索了一种常规合成路线的参数空间以及碳酸亚铁的合成途径。我们使用X射线粉末衍射表征了碳酸亚铁的结构，并通过热重分析和扫描电子显微镜研究了其热性质。我们展示了合成参数如何影响合成产物的宏观或微观性质。我们的研究为未来关于合成碳酸亚铁时选择何种参数以及可获得何种产物的研究提供了指导。我们在此提出了对碳酸亚铁的全新基本认识。
