Functionalization of Delaminated Zeolite ITQ-6 for the Adsorption of Carbon Dioxide

0328669 - ÚFCH JH 2010 RIV US eng J - Journal Article
Zukal, Arnošt - Pérez-Dominguez, Irene - Mayerová, Jana - Čejka, Jiří
Functionalization of Delaminated Zeolite ITQ-6 for the Adsorption of Carbon Dioxide.
Langmuir. Roč. 25, č. 17 (2009), s. 10314-10321. ISSN 0743-7463
R&D Projects: GA ČR GA203/08/0604
Institutional research plan: CEZ:AV0Z40400503
Keywords : zeolites * ITQ-6 * carbon dioxide
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 3.898, year: 2009

Novel functionalized adsorbents for CO2 separation were synthesized by grafting 3-aminopropyl, 3-(methylamino)propyl, or 3-(phenylamino)propyl ligands in the delaminated zeolite ITQ-6. On the basis of the texture parameters determined from nitrogen adsorption isotherms recorded at 77 K and the results of chemical analysis, physicochemical properties of functionalized ITQ-6 were evaluated and compared with those of mesoporous SBA-15 silica functionalized with the same ligands. To examine carbon dioxide adsorption on functionalized materials, adsorption isotherms at 293 K were measured. To obtain information on the surface energetics of CO2 adsorption on selected samples, isotherms were taken in the temperature range from 273 to 333 K and adsorption isosteres were calculated. Isosteric adsorption heats determined from the slope of adsorption isosteres proved that all of the 3-aminopropyl ligands in ITQ-6 take part in CO2 adsorption.
Permanent Link: http://hdl.handle.net/11104/0005428