以HSO、HPO、HCl、NaOH和KOH作为活化剂，研究由糖蜜制备的活性炭对二氧化碳的吸附性能。
Carbon Dioxide Adsorption over Activated Carbons Produced from Molasses Using HSO, HPO, HCl, NaOH, and KOH as Activating Agents.
作者信息
Kiełbasa Karolina, Bayar Şahin, Varol Esin Apaydin, Sreńscek-Nazzal Joanna, Bosacka Monika, Miądlicki Piotr, Serafin Jarosław, Wróbel Rafał J, Michalkiewicz Beata
机构信息
Faculty of Chemical Technology and Engineering, Department of Catalytic and Sorbent Materials Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland.
Faculty of Engineering, Deptarment of Chemical Engineering, Eskisehir Technical University, Eskisehir 26555, Turkey.
出版信息
Molecules. 2022 Nov 2;27(21):7467. doi: 10.3390/molecules27217467.
Cost-effective activated carbons for CO adsorption were developed from molasses using HSO, HPO, HCl, NaOH, and KOH as activating agents. At the temperature of 0 °C and a pressure of 1 bar, CO adsorption equal to 5.18 mmol/g was achieved over activated carbon obtained by KOH activation. The excellent CO adsorption of M-KOH can be attributed to its high microporosity. However, activated carbon prepared using HCl showed quite high CO adsorption while having very low microporosity. The absence of acid species on the surface promotes CO adsorption over M-HCl. The pore size ranges that are important for CO adsorption at different temperatures were estimated. The higher the adsorption temperature, the more crucial smaller pores were. For 1 bar pressure and temperatures of 0, 10, 20, and 30 °C, the most important were pores equal and below: 0.733, 0.733, 0.679, and 0.536 nm, respectively.
以糖蜜为原料，使用硫酸、磷酸、盐酸、氢氧化钠和氢氧化钾作为活化剂，制备了用于一氧化碳吸附的具有成本效益的活性炭。在0°C的温度和1巴的压力下，通过氢氧化钾活化获得的活性炭对一氧化碳的吸附量达到5.18 mmol/g。M-KOH优异的一氧化碳吸附性能可归因于其高微孔率。然而，用盐酸制备的活性炭虽然微孔率很低，但一氧化碳吸附量却相当高。表面不存在酸性物质促进了M-HCl对一氧化碳的吸附。估算了在不同温度下对一氧化碳吸附至关重要的孔径范围。吸附温度越高，越小的孔就越关键。对于1巴压力以及0、10、20和30°C的温度，最重要的孔径分别为等于及小于：0.733、0.733、0.679和0.536纳米。
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