Zhu, Tao Yang, Seil Choi, Dae Ki Row, Kyung Ho 2024-01-20T18:04:59Z 2024-01-20T18:04:59Z 2021-09-05 2010-11 0256-1115 https://pubs.kist.re.kr/handle/201004/130943 To find an ideal adsorbent for carbon dioxide capture, a new polyethyleneimine modified silica gel material was synthesized with a simple procedure. Three silica gel materials with various particle sizes (15, 25 and 40-63 mu m) were prepared and functionalized with polyethyleneimine. The carbon dioxide adsorption amounts of modified silica gel and non-modified silica gel were calculated using a mass balance equation at three different temperatures (298.15, 308.15 and 318.15 K), respectively, and the influence of gas pressure and particle size on adsorption was discussed. Experimental data showed that the carbon dioxide adsorption capacity of modified silica gel was better than non-modified silica gel, and the adsorption capacity gradually decreased with increasing particle size. The smaller particle size (15 mu m) PEI modified silica gel had the largest adsorption capacity, at 298.15 K, and the adsorption amounts of various particle sizes of PEI-silica better fit the Langmuir isotherm model. English KOREAN INSTITUTE CHEMICAL ENGINEERS MESOPOROUS SILICAS CO2 IMPREGNATION SEPARATION CAPTURE NITROGEN SORBENT REMOVAL ACID Adsorption of carbon dioxide using polyethyleneimine modified silica gel Article 10.1007/s11814-010-0284-6 1 KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.27, no.6, pp.1910 - 1915 KOREAN JOURNAL OF CHEMICAL ENGINEERING 27 6 1910 1915 scie scopus kci ART001489791 000283837100047 2-s2.0-79952576089 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article MESOPOROUS SILICAS CO2 IMPREGNATION SEPARATION CAPTURE NITROGEN SORBENT REMOVAL ACID Adsorption Adsorbent Silica Gel Carbon Dioxide PEI