氯化锌改性碳球对一氧化碳吸附性能的影响

The Effect of the Modification of Carbon Spheres with ZnCl on the Adsorption Properties towards CO.

作者信息

Pełech Iwona, Staciwa Piotr, Sibera Daniel, Kusiak-Nejman Ewelina, Morawski Antoni W, Kapica-Kozar Joanna, Narkiewicz Urszula

机构信息

Department of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Pułaskiego 10, 70-322 Szczecin, Poland.

Department of General Civil Engineering, Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, Piastów 50a, 70-311 Szczecin, Poland.

出版信息

Molecules. 2022 Feb 18;27(4):1387. doi: 10.3390/molecules27041387.

DOI:10.3390/molecules27041387

PMID:35209176

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8875341/

Abstract

Zinc chloride and potassium oxalate are often applied as activating agents for carbon materials. In this work, we present the preparation of ZnO/carbon spheres composites using resorcinol-formaldehyde resin as a carbon source in a solvothermal reactor heated with microwaves. Zinc chloride as a zinc oxide source and potassium oxalate as an activating agent were applied. The effect of their addition and preparation conditions on the adsorption properties towards carbon dioxide at 0 °C and 25 °C were investigated. Additionally, for all tested sorbents, the CO sorption tests at 40 °C, carried out utilizing a thermobalance, confirmed the trend of sorption capacity measured at 0 and 25 °C. Furthermore, the sample activated using potassium oxalate and modified using zinc chloride (a carbon-to-zinc ratio equal to 10:1) displayed not only a high CO adsorption capacity (2.69 mmol CO/g at 40 °C) but also exhibited a stable performance during the consecutive multicycle adsorption-desorption process.

摘要

氯化锌和草酸钾常被用作碳材料的活化剂。在本工作中，我们展示了以间苯二酚-甲醛树脂作为碳源，在微波加热的溶剂热反应器中制备ZnO/碳球复合材料的过程。使用氯化锌作为氧化锌源，草酸钾作为活化剂。研究了它们的添加量和制备条件对在0°C和25°C下对二氧化碳吸附性能的影响。此外，对于所有测试的吸附剂，利用热重天平在40°C下进行的CO吸附测试证实了在0°C和25°C下测得的吸附容量趋势。此外，用草酸钾活化并经氯化锌改性（碳与锌的比例等于10:1）的样品不仅在40°C时具有较高的CO吸附容量（2.69 mmol CO/g），而且在连续的多循环吸附-解吸过程中表现出稳定的性能。