Low temperature removal of SO<sub>2sub> traces from air by MgO-loaded porous carbons
- 作者：J. Przepió ; rski<sup> ; sup><sup>jacek.przepiorski@zut.edu.plsup> ; A. Czy偶ewski ; J. Kapica ; D. Moszy艅ski ; B. Grzmil ; B. Tryba ; S. Mozia ; A.W. Morawski
- 关键词：Porous carbon ; Magnesite ; Magnesium oxide ; SO2 ; Sorption
- 刊名：Chemical Engineering Journal
- 出版年：2012
- 期刊代码：16_13858947
- 类别：ce
- 出版时间：15 May, 2012
- 卷：191
- 期：Complete
- 页码：147-153
- 文件大小：693 K
摘要
Porous carbons loaded with MgO, prepared through one-step process from mixtures of poly(ethylene terephthalate) and natural magnesite, were examined as sorbents for SO<sub>2sub> gas contained in air at low temperature. Influence of pore structure, inorganics loading, humidity, and temperature, on the efficiency of the gas removal is presented and discussed. Performance of the hybrid sorbent materials increased along with MgO loading, temperature of the bed, and moisture content. As found, removal of SO<sub>2sub> by the prepared sorbents is due to synergic effect involving adsorption on porous material and chemical interaction between the gas and MgO. Possible mechanism of the SO<sub>2sub> removal process is proposed on the basis of XPS spectroscopy measurements.