title: Amine-based nanofibrillated cellulose as adsorbent for CO₂ capture from air.
abstract: A novel amine-based adsorbent for CO₂ capture from air was developed, which uses biogenic raw materials and an environmentally benign synthesis route without organic solvents. The adsorbent was synthesized through freeze-drying an aqueous suspension of nanofibrillated cellulose (NFC) and N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane (AEAPDMS). At a CO₂ concentration of 506 ppm in air and a relative humidity of 40% at 25 °C, 1.39 mmol CO₂/g was absorbed after 12 h. Stability was examined for over 20 consecutive 2-h-adsorption/1-h-desorption cycles, yielding a cyclic capacity of 0.695 mmol CO₂/g.
authors.affiliation: Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zurich, Switzerland. aldo.steinfeld@ethz.ch
authors.forename: Christoph
authors.initials: C
authors.lastname: Gebald
authors.forename: Jan Andre
authors.initials: JA
authors.lastname: Wurzbacher
authors.forename: Philippe
authors.initials: P
authors.lastname: Tingaut
authors.forename: Tanja
authors.initials: T
authors.lastname: Zimmermann
authors.forename: Aldo
authors.initials: A
authors.lastname: Steinfeld
mesh_terms: D000042:Absorption; D000388:Air / Q000032:analysis*; D000588:Amines / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*
chemical_list: D000588:Amines; D002245:Carbon Dioxide; D002482:Cellulose