title: Periodic mesoporous organosilicas functionalized with a wide variety of amines for CO2 adsorption.
abstract: The adsorption of CO2 on amine modified periodic mesoporous organosilicas (PMOs) has been investigated. An ethenylene-bridged PMO is modified with a wide range of diamines and polyamines. A variety of dangling N-containing functionalities, i.e., diaminobutane, diaminohexane, diaminododecane, diethylenetriamine and tetraethylenepentamine, as nucleophiles in a substitution reaction is used. The CO2 adsorption capacity of these materials is probed and compared with amine functionalized SBA-15 material, in an effort to reach the maximal CO2/N ratio of 0.5 when using dry conditions in a chemisorption process. The materials showed good CO2 adsorption behaviour and this maximum amine efficiency value has been approximated by the PMO material modified with diaminododecane.
authors.affiliation: Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Inorganic and Physical Chemistry, Ghent University, Ghent, Belgium.
authors.forename: Els
authors.initials: E
authors.lastname: De Canck
authors.forename: Isabelle
authors.initials: I
authors.lastname: Ascoop
authors.forename: Abdelhamid
authors.initials: A
authors.lastname: Sayari
authors.forename: Pascal
authors.initials: P
authors.lastname: Van Der Voort