Adsorption of CO2 at atmospheric pressure on activated carbons prepared from melamine-modified phenol-formaldehyde resins
Adsorption of CO2 at atmospheric pressure on activated carbons prepared from melamine-modified phenol-formaldehyde resins
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DOI：
10.1016/j.seppur.2014.11.018
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发表时间：
2015-01-22
影响因子：
8.6
通讯作者：
Juang, Ruey-Shin
中科院分区：
文献类型：
--
作者：
Tseng, Ru-Ling;Wu, Feng-Chin;Juang, Ruey-Shin
通过在不同活化温度（700-950 ℃）下的蒸汽活化，由三聚氰胺改性的酚醛树脂制备高度多孔的活性炭，然后在大气压下用于CO2捕集。研究了活性炭的孔隙率、表面性质及其对CO2的吸附性能，并与普通酚醛树脂活性炭进行了比较。对CO2的吸附容量为6.71 mol kg（-1）（29.5 wt.%）在0 ℃和1个大气压下达到，并随着操作温度的升高而显著降低。所制备的活性炭可以很好地应用于变温吸附过程。在三个等温方程（Langmuir、Freundlich和Redlich-Peterson）中，只有三参数Redlich-Peterson方程能较好地描述CO2在活性炭上的吸附。(C)2014爱思唯尔有限公司版权所有。
Highly porous activated carbons were prepared from melamine-modified phenol-formaldehyde resins via steam activation at different activation temperatures (700-950 degrees C) and then used for CO2 capture at atmospheric pressure. The porosity and surface properties of the activated carbons and their CO2 adsorption capabilities were studied and compared with those derived from common phenol-formaldehyde resin. An adsorption capacity for CO2 of 6.71 mol kg(-1) (29.5 wt.%) was attained at 0 degrees C and 1 atm and decreased significantly with increasing operating temperature. The prepared activated carbons could be well applied in temperature-swing adsorption processes. Of the three isotherm equations (Langmuir, Freundlich, and Redlich-Peterson), the adsorption of CO2 on activated carbons could only be satisfactorily described using the three-parameter Redlich-Peterson equation. (C) 2014 Elsevier B.V. All rights reserved.