title: Probing the surface of nanosheet H-ZSM-5 with FTIR spectroscopy.
abstract: Herein we report FTIR in situ adsorption of molecular hydrogen, carbon monoxide, water, methanol, pyridine and 2,4,6-trimethylpyridine (collidine) on nanosheet H-ZSM-5 which was recently studied in the methanol to hydrocarbons (MTH) reaction. The nature of the hydroxyl groups and surface species are described in detail. The IR spectrum of nanosheet H-ZSM-5 is dominated by silanols, which saturate the external surfaces. The acidity of Si(OH)Al is comparable to that observed in the case of standard microcrystalline H-ZSM-5. The study of the external surface allows the recognition of Si(OH)Al species located at the channel entrance, which are mostly all accessible to hindered molecules such as collidine.
authors.affiliation: inGAP Centre of Research Based Innovation, University of Oslo, Department of Chemistry, N-0315 Oslo, Norway.
authors.forename: Bjørn-Tore Lønstad
authors.initials: BT
authors.lastname: Bleken
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Mino
authors.forename: Filippo
authors.initials: F
authors.lastname: Giordanino
authors.forename: Pablo
authors.initials: P
authors.lastname: Beato
authors.forename: Stian
authors.initials: S
authors.lastname: Svelle
authors.forename: Karl Petter
authors.initials: KP
authors.lastname: Lillerud
authors.forename: Silvia
authors.initials: S
authors.lastname: Bordiga
mesh_terms: D000327:Adsorption; D002248:Carbon Monoxide / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D011725:Pyridines / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014867:Water / Q000737:chemistry; D017641:Zeolites / Q000737:chemistry*
chemical_list: D011725:Pyridines; C570564:ZSM-5 zeolite; D014867:Water; D017641:Zeolites; C007106:gamma-collidine; D002248:Carbon Monoxide; D006859:Hydrogen; C023666:pyridine; D000432:Methanol